56个 PHP 开发常用代码片段

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function send_sms($mobile,$msg)
{
$authKey = "XXXXXXXXXXX";
date_default_timezone_set("Asia/Kolkata");
$date = strftime("%Y-%m-%d %H:%M:%S");
//Multiple mobiles numbers separated by comma
$mobileNumber = $mobile;
           
//Sender ID,While using route4 sender id should be 6 characters long.
$senderId = "IKOONK";
           
//Your message to send,Add URL encoding here.
$message = urlencode($msg);
           
//Define route 
$route = "template";
//Prepare you post parameters
$postData = array(
    'authkey' => $authKey,'mobiles' => $mobileNumber,'message' => $message,'sender' => $senderId,'route' => $route
);
           
//API URL
$url="https://control.msg91.com/sendhttp.php";
           
// init the resource
$ch = curl_init();
curl_setopt_array($ch,array(
    CURLOPT_URL => $url,CURLOPT_RETURNTRANSFER => true,CURLOPT_POST => true,CURLOPT_POSTFIELDS => $postData
    //,CURLOPT_FOLLOWLOCATION => true
));
           
           
//Ignore SSL certificate verification
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,0);
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,0);
           
           
//get response
$output = curl_exec($ch);
//Print error if any
if(curl_errno($ch))
{
    echo 'error:' . curl_error($ch);
}
           
curl_close($ch);
}

<?php
$message = "Hello World";
$mobile = "918112998787";
send_sms($mobile,$message);
?>

function send_email($to_email,$subject,$message1)
{
require_once 'Mandrill.php';
$apikey = 'XXXXXXXXXX'; //specify your api key here
$mandrill = new Mandrill($apikey);
           
$message = new stdClass();
$message->html = $message1;
$message->text = $message1;
$message->subject = $subject;
$message->from_email = "[emailprotected]";//Sender Email
$message->from_name  = "KOONK";//Sender Name
$message->to = array(array("email" => $to_email));
$message->track_opens = true;
           
$response = $mandrill->messages->send($message);
}

<?php
$to = "[emailprotected]";
$subject = "This is a test email";
$message = "Hello World!";
send_email($to,$message);
?>

function clean($input)
{
    if (is_array($input))
    {
        foreach ($input as $key => $val)
         {
            $output[$key] = clean($val);
            // $output[$key] = $this->clean($val);
        }
    }
    else
    {
        $output = (string) $input;
        // if magic quotes is on then use strip slashes
        if (get_magic_quotes_gpc()) 
        {
            $output = stripslashes($output);
        }
        // $output = strip_tags($output);
        $output = htmlentities($output,ENT_QUOTES,'UTF-8');
    }
// return the clean text
    return $output;
}

<?php
$text = "<script>alert(1)</script>";
$text = clean($text);
echo $text;
?>

function detect_city($ip) {
                  
        $default = 'UNKNOWN';
           
        $curlopt_useragent = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)';
                  
        $url = 'http://ipinfodb.com/ip_locator.php?ip=' . urlencode($ip);
        $ch = curl_init();
                  
        $curl_opt = array(
            CURLOPT_FOLLOWLOCATION  => 1,CURLOPT_HEADER      => 0,CURLOPT_RETURNTRANSFER  => 1,CURLOPT_USERAGENT   => $curlopt_useragent,CURLOPT_URL       => $url,CURLOPT_TIMEOUT         => 1,CURLOPT_REFERER         => 'http://' . $_SERVER['HTTP_HOST'],);
                  
        curl_setopt_array($ch,$curl_opt);
                  
        $content = curl_exec($ch);
                  
        if (!is_null($curl_info)) {
            $curl_info = curl_getinfo($ch);
        }
                  
        curl_close($ch);
                  
        if ( preg_match('{<li>City : ([^<]*)</li>}i',$content,$regs) )  {
            $city = $regs[1];
        }
        if ( preg_match('{<li>State/Province : ([^<]*)</li>}i',$regs) )  {
            $state = $regs[1];
        }
           
        if( $city!='' && $state!='' ){
          $location = $city . ',' . $state;
          return $location;
        }else{
          return $default; 
        }
                  
    }

<?php
$ip = $_SERVER['REMOTE_ADDR'];
$city = detect_city($ip);
echo $city;
?>

function display_sourcecode($url)
{
$lines = file($url);
$output = "";
foreach ($lines as $line_num => $line) { 
    // loop thru each line and prepend line numbers
    $output.= "Line #<b>{$line_num}</b> : " . htmlspecialchars($line) . "n";
}
}

<?php
$url = "http://blog.koonk.com";
$source = display_sourcecode($url);
echo $source;
?>

function fb_fan_count($facebook_name)
{
    $data = json_decode(file_get_contents("https://graph.facebook.com/".$facebook_name));
    $likes = $data->likes;
    return $likes;
}

<?php
$page = "koonktechnologies";
$count = fb_fan_count($page);
echo $count;
?>

function dominant_color($image)
{
$i = imagecreatefromjpeg($image);
for ($x=0;$x<imagesx($i);$x++) {
    for ($y=0;$y<imagesy($i);$y++) {
        $rgb = imagecolorat($i,$x,$y);
        $r   = ($rgb >> 16) & 0xFF;
        $g   = ($rgb >>  & 0xFF;
        $b   = $rgb & 0xFF;
        $rTotal += $r;
        $gTotal += $g;
        $bTotal += $b;
        $total++;
    }
}
$rAverage = round($rTotal/$total);
$gAverage = round($gTotal/$total);
$bAverage = round($bTotal/$total);
}

function whois_query($domain) {
        
    // fix the domain name:
    $domain = strtolower(trim($domain));
    $domain = preg_replace('/^http:///i','',$domain);
    $domain = preg_replace('/^www./i',$domain);
    $domain = explode('/',$domain);
    $domain = trim($domain[0]);
        
    // split the TLD from domain name
    $_domain = explode('.',$domain);
    $lst = count($_domain)-1;
    $ext = $_domain[$lst];
        
    // You find resources and lists 
    // like these on wikipedia: 
    //
    // http://de.wikipedia.org/wiki/Whois
    //
    $servers = array(
        "biz" => "whois.neulevel.biz","com" => "whois.internic.net","us" => "whois.nic.us","coop" => "whois.nic.coop","info" => "whois.nic.info","name" => "whois.nic.name","net" => "whois.internic.net","gov" => "whois.nic.gov","edu" => "whois.internic.net","mil" => "rs.internic.net","int" => "whois.iana.org","ac" => "whois.nic.ac","ae" => "whois.uaenic.ae","at" => "whois.ripe.net","au" => "whois.aunic.net","be" => "whois.dns.be","bg" => "whois.ripe.net","br" => "whois.registro.br","bz" => "whois.belizenic.bz","ca" => "whois.cira.ca","cc" => "whois.nic.cc","ch" => "whois.nic.ch","cl" => "whois.nic.cl","cn" => "whois.cnnic.net.cn","cz" => "whois.nic.cz","de" => "whois.nic.de","fr" => "whois.nic.fr","hu" => "whois.nic.hu","ie" => "whois.domainregistry.ie","il" => "whois.isoc.org.il","in" => "whois.ncst.ernet.in","ir" => "whois.nic.ir","mc" => "whois.ripe.net","to" => "whois.tonic.to","tv" => "whois.tv","ru" => "whois.ripn.net","org" => "whois.pir.org","aero" => "whois.information.aero","nl" => "whois.domain-registry.nl"
    );
        
    if (!isset($servers[$ext])){
        die('Error: No matching nic server found!');
    }
        
    $nic_server = $servers[$ext];
        
    $output = '';
        
    // connect to whois server:
    if ($conn = fsockopen ($nic_server,43)) {
        fputs($conn,$domain."rn");
        while(!feof($conn)) {
            $output .= fgets($conn,128);
        }
        fclose($conn);
    }
    else { die('Error: Could not connect to ' . $nic_server . '!'); }
        
    return $output;
}

<?php
$domain = "http://www.blog.koonk.com";
$result = whois_query($domain);
print_r($result);
?>

function is_validemail($email)
{
$check = 0;
if(filter_var($email,FILTER_VALIDATE_EMAIL))
{
$check = 1;
}
return $check;
}
      
语法：
<?php
$email = "[emailprotected]";
$check = is_validemail($email);
echo $check;
// If the output is 1,then email is valid.
?>

function getRealIpAddr()  
{  
    if (!emptyempty($_SERVER['HTTP_CLIENT_IP']))  
    {  
        $ip=$_SERVER['HTTP_CLIENT_IP'];  
    }  
    elseif (!emptyempty($_SERVER['HTTP_X_FORWARDED_FOR']))  
    //to check ip is pass from proxy  
    {  
        $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];  
    }  
    else  
    {  
        $ip=$_SERVER['REMOTE_ADDR'];  
    }  
    return $ip;  
}

<?php
$ip = getRealIpAddr();
echo $ip;
?>

function makeClickableLinks($text) 
{  
 $text = eregi_replace('(((f|ht){1}tp://)[[emailprotected]:%_+.~#?&//=]+)','<a href="1">1</a>',$text);  
 $text = eregi_replace('([[:space:]()[{}])(www.[[emailprotected]:%_+.~#?&//=]+)','1<a href="http://2">2</a>',$text);  
 $text = eregi_replace('([_.0-9a-z-][emailprotected]([0-9a-z][0-9a-z-]+.)+[a-z]{2,3})','<a href="mailto:1">1</a>',$text);  
        
return $text;  
}
     
语法：
<?php
$text = "This is my first post on http://blog.koonk.com";
$text = makeClickableLinks($text);
echo $text;
?>

if ( !file_exists('blocked_ips.txt') ) {
 $deny_ips = array(
  '127.0.0.1','192.168.1.1','83.76.27.9','192.168.1.163'
 );
} else {
 $deny_ips = file('blocked_ips.txt');
}
// read user ip adress:
$ip = isset($_SERVER['REMOTE_ADDR']) ? trim($_SERVER['REMOTE_ADDR']) : '';
       
// search current IP in $deny_ips array
if ( (array_search($ip,$deny_ips))!== FALSE ) {
 // address is blocked:
 echo 'Your IP adress ('.$ip.') was blocked!';
 exit;
}

function force_download($file) 
{ 
    $dir      = "../log/exports/"; 
    if ((isset($file))&&(file_exists($dir.$file))) { 
       header("Content-type: application/force-download"); 
       header('Content-Disposition: inline; filename="' . $dir.$file . '"'); 
       header("Content-Transfer-Encoding: Binary"); 
       header("Content-length: ".filesize($dir.$file)); 
       header('Content-Type: application/octet-stream'); 
       header('Content-Disposition: attachment; filename="' . $file . '"'); 
       readfile("$dir$file"); 
    } else { 
       echo "No file selected"; 
    } 
}

<php
force_download("image.jpg");
?>

$json_data = array ('id'=>1,'name'=>"Mohit");
echo json_encode($json_data);

function create_zip($files = array(),$destination = '',$overwrite = false) {  
    //if the zip file already exists and overwrite is false,return false  
    if(file_exists($destination) && !$overwrite) { return false; }  
    //vars  
    $valid_files = array();  
    //if files were passed in...  
    if(is_array($files)) {  
        //cycle through each file  
        foreach($files as $file) {  
            //make sure the file exists  
            if(file_exists($file)) {  
                $valid_files[] = $file;  
            }  
        }  
    }  
    //if we have good files...  
    if(count($valid_files)) {  
        //create the archive  
        $zip = new ZipArchive();  
        if($zip->open($destination,$overwrite ? ZIPARCHIVE::OVERWRITE : ZIPARCHIVE::CREATE) !== true) {  
            return false;  
        }  
        //add the files  
        foreach($valid_files as $file) {  
            $zip->addFile($file,$file);  
        }  
        //debug  
        //echo 'The zip archive contains ',$zip->numFiles,' files with a status of ',$zip->status;  
                
        //close the zip -- done!  
        $zip->close();  
                
        //check to make sure the file exists  
        return file_exists($destination);  
    }  
    else  
    {  
        return false;  
    }  
}
     
语法：
<?php
$files=array('file1.jpg','file2.jpg','file3.gif');  
create_zip($files,'myzipfile.zip',true); 
?>

function unzip($location,$newLocation)
{
        if(exec("unzip $location",$arr)){
            mkdir($newLocation);
            for($i = 1;$i< count($arr);$i++){
                $file = trim(preg_replace("~inflating: ~","",$arr[$i]));
                copy($location.'/'.$file,$newLocation.'/'.$file);
                unlink($location.'/'.$file);
            }
            return TRUE;
        }else{
            return FALSE;
        }
}

<?php
unzip('test.zip','unziped/test'); //File would be unzipped in unziped/test folder
?>

function resize_image($filename,$tmpname,$xmax,$ymax)  
{  
    $ext = explode(".",$filename);  
    $ext = $ext[count($ext)-1];  
        
    if($ext == "jpg" || $ext == "jpeg")  
        $im = imagecreatefromjpeg($tmpname);  
    elseif($ext == "png")  
        $im = imagecreatefrompng($tmpname);  
    elseif($ext == "gif")  
        $im = imagecreatefromgif($tmpname);  
            
    $x = imagesx($im);  
    $y = imagesy($im);  
            
    if($x <= $xmax && $y <= $ymax)  
        return $im;  
        
    if($x >= $y) {  
        $newx = $xmax;  
        $newy = $newx * $y / $x;  
    }  
    else {  
        $newy = $ymax;  
        $newx = $x / $y * $newy;  
    }  
            
    $im2 = imagecreatetruecolor($newx,$newy);  
    imagecopyresized($im2,$im,floor($newx),floor($newy),$y);  
    return $im2;   
}

function send_mail($to,$body)
{
$headers = "From: KOONKrn";
$headers .= "Reply-To: [emailprotected]rn";
$headers .= "Return-Path: [emailprotected]rn";
$headers .= "X-Mailer: PHP5n";
$headers .= 'MIME-Version: 1.0' . "n";
$headers .= 'Content-type: text/html; charset=iso-8859-1' . "rn";
mail($to,$body,$headers);
}
     
语法：
<?php
$to = "[emailprotected]";
$subject = "This is a test mail";
$body = "Hello World!";
send_mail($to,$body);
?>

function secsToStr($secs) {
    if($secs>=86400){$days=floor($secs/86400);$secs=$secs%86400;$r=$days.' day';if($days<>1){$r.='s';}if($secs>0){$r.=',';}}
    if($secs>=3600){$hours=floor($secs/3600);$secs=$secs%3600;$r.=$hours.' hour';if($hours<>1){$r.='s';}if($secs>0){$r.=',';}}
    if($secs>=60){$minutes=floor($secs/60);$secs=$secs%60;$r.=$minutes.' minute';if($minutes<>1){$r.='s';}if($secs>0){$r.=',';}}
    $r.=$secs.' second';if($secs<>1){$r.='s';}
    return $r;
}

<?php
$seconds = "56789";
$output = secsToStr($seconds);
echo $output;
?>

<?php
$DBNAME = 'koonk';
$HOST = 'localhost';
$DBUSER = 'root';
$DBPASS = 'koonk';
$CONNECT = mysql_connect($HOST,$DBUSER,$DBPASS);
if(!$CONNECT)
{
    echo 'MySQL Error: '.mysql_error();
}
$SELECT = mysql_select_db($DBNAME);
if(!$SELECT)
{
    echo 'MySQL Error: '.mysql_error();
}
?>

function list_files($dir)
{
    if(is_dir($dir))
    {
        if($handle = opendir($dir))
        {
            while(($file = readdir($handle)) !== false)
            {
                if($file != "." && $file != ".." && $file != "Thumbs.db"/*pesky windows,images..*/)
                {
                    echo '<a target="_blank" href="'.$dir.$file.'">'.$file.'</a>'."n";
                }
            }
            closedir($handle);
        }
    }
}

<?php
    list_files("images/"); //This will list all files of images folder
?>

function get_client_language($availableLanguages,$default='en'){
    if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
        $langs=explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']);
        foreach ($langs as $value){
            $choice=substr($value,2);
            if(in_array($choice,$availableLanguages)){
                return $choice;
            }
        }
    } 
    return $default;
}

function readCSV($csvFile){
    $file_handle = fopen($csvFile,'r');
    while (!feof($file_handle) ) {
        $line_of_text[] = fgetcsv($file_handle,1024);
    }
    fclose($file_handle);
    return $line_of_text;
}
   
语法：
<?php
$csvFile = "test.csv";
$csv = readCSV($csvFile);
$a = csv[0][0]; // This will get value of Column 1 & Row 1
?>

function generateCsv($data,$delimiter = ',$enclosure = '"') {
   $handle = fopen('php://temp','r+');
   foreach ($data as $line) {
           fputcsv($handle,$line,$delimiter,$enclosure);
   }
   rewind($handle);
   while (!feof($handle)) {
           $contents .= fread($handle,8192);
   }
   fclose($handle);
   return $contents;
}
   
语法：
<?php
$data[0] = "apple";
$data[1] = "oranges";
generateCsv($data,$enclosure = '"');
?>

$xml_string="<?xml version='1.0'?>
<moleculedb>
    <molecule name='Benzine'>
        <symbol>ben</symbol>
        <code>A</code>
    </molecule>
    <molecule name='Water'>
        <symbol>h2o</symbol>
        <code>K</code>
    </molecule>
</moleculedb>";
     
//load the xml string using simplexml function
$xml = simplexml_load_string($xml_string);
     
//loop through the each node of molecule
foreach ($xml->molecule as $record)
{
   //attribute are accessted by
   echo $record['name'],'  ';
   //node are accessted by -> operator
   echo $record->symbol,'  ';
   echo $record->code,'';
}

$json_string='{"id":1,"name":"rolf","country":"russia","office":["google","oracle"]} ';
$obj=json_decode($json_string);
//print the parsed data
echo $obj->name; //displays rolf
echo $obj->office[0]; //displays google

function current_url()
{
$url = "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$validURL = str_replace("&","&",$url);
return validURL;
}

<?php
echo "Currently you are on: ".current_url();
?>

function my_twitter($username) 
{
     $no_of_tweets = 1;
     $feed = "http://search.twitter.com/search.atom?q=from:" . $username . "&rpp=" . $no_of_tweets;
     $xml = simplexml_load_file($feed);
    foreach($xml->children() as $child) {
        foreach ($child as $value) {
            if($value->getName() == "link") $link = $value['href'];
            if($value->getName() == "content") {
                $content = $value . "";
        echo '<p class="twit">'.$content.' <a class="twt" href="'.$link.'" title="">  </a></p>';
            }    
        }
    }    
}
   
语法：
<?php
$handle = "koonktech";
my_twitter($handle);
?>

function tweetCount($url) {
    $content = file_get_contents("http://api.tweetmeme.com/url_info?url=".$url);
    $element = new SimpleXmlElement($content);
    $retweets = $element->story->url_count;
    if($retweets){
        return $retweets;
    } else {
        return 0;
    }
}
   
语法：
<?php
$url = "http://blog.koonk.com";
$count = tweetCount($url);
return $count;
?>

<?php
$date1 = date( 'Y-m-d' );
$date2 = "2015-12-04";
$diff = abs(strtotime($date2) - strtotime($date1));
$years = floor($diff / (365*60*60*24));
$months = floor(($diff - $years * 365*60*60*24) / (30*60*60*24));
$days = floor(($diff - $years * 365*60*60*24 - $months*30*60*60*24)/ (60*60*24));
printf("%d years,%d months,%d daysn",$years,$months,$days);
-------------------------------------------------------- OR
$date1 = new DateTime("2007-03-24");
$date2 = new DateTime("2009-06-26");
$interval = $date1->diff($date2);
echo "difference " . $interval->y . " years," . $interval->m." months,".$interval->d." days "; 
// shows the total amount of days (not divided into years,months and days like above)
echo "difference " . $interval->days . " days ";
-------------------------------------------------------- OR
        
        
/**
 * Calculate differences between two dates with precise semantics. Based on PHPs DateTime::diff()
 * implementation by Derick Rethans. Ported to PHP by Emil H,2011-05-02. No rights reserved.
 * 
 * See here for original code:
 * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/tm2unixtime.c?revision=302890&view=markup
 * http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/interval.c?revision=298973&view=markup
 */
function _date_range_limit($start,$end,$adj,$a,$b,$result)
{
    if ($result[$a] < $start) {
        $result[$b] -= intval(($start - $result[$a] - 1) / $adj) + 1;
        $result[$a] += $adj * intval(($start - $result[$a] - 1) / $adj + 1);
    }
    if ($result[$a] >= $end) {
        $result[$b] += intval($result[$a] / $adj);
        $result[$a] -= $adj * intval($result[$a] / $adj);
    }
    return $result;
}
function _date_range_limit_days($base,$result)
{
    $days_in_month_leap = array(31,31,29,30,31);
    $days_in_month = array(31,28,31);
    _date_range_limit(1,13,12,"m","y",&$base);
    $year = $base["y"];
    $month = $base["m"];
    if (!$result["invert"]) {
        while ($result["d"] < 0) {
            $month--;
            if ($month < 1) {
                $month += 12;
                $year--;
            }
            $leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
            $days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];
            $result["d"] += $days;
            $result["m"]--;
        }
    } else {
        while ($result["d"] < 0) {
            $leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
            $days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];
            $result["d"] += $days;
            $result["m"]--;
            $month++;
            if ($month > 12) {
                $month -= 12;
                $year++;
            }
        }
    }
    return $result;
}
function _date_normalize($base,$result)
{
    $result = _date_range_limit(0,60,"s","i",$result);
    $result = _date_range_limit(0,"h",24,"d",$result);
    $result = _date_range_limit_days(&$base,&$result);
    $result = _date_range_limit(0,$result);
    return $result;
}
/**
 * Accepts two unix timestamps.
 */
function _date_diff($one,$two)
{
    $invert = false;
    if ($one > $two) {
        list($one,$two) = array($two,$one);
        $invert = true;
    }
    $key = array("y","s");
    $a = array_combine($key,array_map("intval",explode(" ",date("Y m d H i s",$one))));
    $b = array_combine($key,$two))));
    $result = array();
    $result["y"] = $b["y"] - $a["y"];
    $result["m"] = $b["m"] - $a["m"];
    $result["d"] = $b["d"] - $a["d"];
    $result["h"] = $b["h"] - $a["h"];
    $result["i"] = $b["i"] - $a["i"];
    $result["s"] = $b["s"] - $a["s"];
    $result["invert"] = $invert ? 1 : 0;
    $result["days"] = intval(abs(($one - $two)/86400));
    if ($invert) {
        _date_normalize(&$a,&$result);
    } else {
        _date_normalize(&$b,&$result);
    }
    return $result;
}
$date = "2014-12-04 19:37:22";
echo '<pre>';
print_r( _date_diff( strtotime($date),time() ) );
echo '</pre>'; 
?>

function Delete($path)
{
    if (is_dir($path) === true)
    {
        $files = array_diff(scandir($path),array('.','..'));
        foreach ($files as $file)
        {
            Delete(realpath($path) . '/' . $file);
        }
        return rmdir($path);
    }
    else if (is_file($path) === true)
    {
        return unlink($path);
    }
    return false;
}

<?php
$path = "images/";
Delete($path); // This will delete images folder along with its contents.
?>

function highlighter_text($text,$words)
{
    $split_words = explode( " ",$words );
    foreach($split_words as $word)
    {
        $color = "#4285F4";
        $text = preg_replace("|($word)|Ui","<span style="color:".$color.";"><b>$1</b></span>",$text );
    }
    return $text;
}

<?php
$string = "I like chocolates and I like apples";
$words = "apple";
echo highlighter_text($string,$words);
?>

<?
$filename = 'blog.csv';
$fp = fopen($filename,'w');
$output = " Hello ";
$output .= " World! ";
$output .= "rn";
fputs($fp,$output);
fclose($fp);
?>

function imagefromURL($image,$rename)
{
$ch = curl_init($image);
curl_setopt($ch,CURLOPT_HEADER,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_BINARYTRANSFER,1);
$rawdata=curl_exec ($ch);
curl_close ($ch);
$fp = fopen("$rename",'w');
fwrite($fp,$rawdata); 
fclose($fp);
}

<?php
$url = "http://koonk.com/images/logo.png";
$rename = "koonk.png";
imagefromURL($url,$rename);
?>

function isvalidURL($url)
{
$check = 0;
if (filter_var($url,FILTER_VALIDATE_URL) !== false) {
  $check = 1;
}
return $check;
}
 
语法：
<?php
$url = "http://koonk.com";
$check = checkvalidURL($url);
echo $check; //if returns 1 then URL is valid.
?>

function qr_code($data,$type = "TXT",$size ='150',$ec='L',$margin='0')  
{
     $types = array("URL" =--> "http://","TEL" => "TEL:","TXT"=>"","EMAIL" => "MAILTO:");
    if(!in_array($type,array("URL","TEL","TXT","EMAIL")))
    {
        $type = "TXT";
    }
    if (!preg_match('/^'.$types[$type].'/',$data))
    {
        $data = str_replace("",$types[$type]).$data;
    }
    $ch = curl_init();
    $data = urlencode($data);
    curl_setopt($ch,CURLOPT_URL,'http://chart.apis.google.com/chart');
    curl_setopt($ch,CURLOPT_POST,true);
    curl_setopt($ch,CURLOPT_POSTFIELDS,'chs='.$size.'x'.$size.'&cht=qr&chld='.$ec.'|'.$margin.'&chl='.$data);
    curl_setopt($ch,false);
    curl_setopt($ch,CURLOPT_TIMEOUT,30);
    $response = curl_exec($ch);
    curl_close($ch);
    return $response;
}

<?php
header("Content-type: image/png");
echo qr_code("http://koonk.com","URL");
?>

function getDistanceBetweenPointsNew($latitude1,$longitude1,$latitude2,$longitude2) {
    $theta = $longitude1 - $longitude2;
    $miles = (sin(deg2rad($latitude1)) * sin(deg2rad($latitude2))) + (cos(deg2rad($latitude1)) * cos(deg2rad($latitude2)) * cos(deg2rad($theta)));
    $miles = acos($miles);
    $miles = rad2deg($miles);
    $miles = $miles * 60 * 1.1515;
    $feet = $miles * 5280;
    $yards = $feet / 3;
    $kilometers = $miles * 1.609344;
    $meters = $kilometers * 1000;
    return compact('miles','feet','yards','kilometers','meters'); 
}

<?php
$point1 = array('lat' => 40.770623,'long' => -73.964367);
$point2 = array('lat' => 40.758224,'long' => -73.917404);
$distance = getDistanceBetweenPointsNew($point1['lat'],$point1['long'],$point2['lat'],$point2['long']);
foreach ($distance as $unit => $value) {
    echo $unit.': '.number_format($value,4).'';
}
?>

function getTweets($hash_tag) {
    $url = 'http://search.twitter.com/search.atom?q='.urlencode($hash_tag) ;
    echo "<p>Connecting to <strong>$url</strong> ...</p>";
    $ch = curl_init($url);
    curl_setopt ($ch,TRUE);
    $xml = curl_exec ($ch);
    curl_close ($ch);
    //If you want to see the response from Twitter,uncomment this next part out:
    //echo "<p>Response:</p>";
    //echo "<pre>".htmlspecialchars($xml)."</pre>";
    $affected = 0;
    $twelement = new SimpleXMLElement($xml);
    foreach ($twelement->entry as $entry) {
        $text = trim($entry->title);
        $author = trim($entry->author->name);
        $time = strtotime($entry->published);
        $id = $entry->id;
        echo "<p>Tweet from ".$author.": <strong>".$text."</strong>  <em>Posted ".date('n/j/y g:i a',$time)."</em></p>";
    }
    return true ;
}

Friday the 13th
function ordinal($cdnl){ 
    $test_c = abs($cdnl) % 10; 
    $ext = ((abs($cdnl) %100 < 21 && abs($cdnl) %100 > 4) ? 'th'
            : (($test_c < 4) ? ($test_c < 3) ? ($test_c < 2) ? ($test_c < 1) 
            ? 'th' : 'st' : 'nd' : 'rd' : 'th')); 
    return $cdnl.$ext; 
}

<?php
$number = 10;
echo ordinal($number); //output is 10th
?>

<?php
// local file that should be send to the client
$local_file = 'test-file.zip';
// filename that the user gets as default
$download_file = 'your-download-name.zip';
   
// set the download rate limit (=> 20,5 kb/s)
$download_rate = 20.5; 
if(file_exists($local_file) && is_file($local_file)) {
    // send headers
    header('Cache-control: private');
    header('Content-Type: application/octet-stream'); 
    header('Content-Length: '.filesize($local_file));
    header('Content-Disposition: filename='.$download_file);
   
    // flush content
    flush();    
    // open file stream
    $file = fopen($local_file,"r");    
    while(!feof($file)) {
   
        // send the current file part to the browser
        print fread($file,round($download_rate * 1024));    
   
        // flush the content to the browser
        flush();
   
        // sleep one second
        sleep(1);    
    }    
   
    // close file stream
    fclose($file);}
else {
    die('Error: The file '.$local_file.' does not exist!');
}
?>

<?php
header("Content-type: image/png");
$string = $_GET['text'];
$im = imagecreatefrompng("images/button.png");
$color = imagecolorallocate($im,255,255);
$px = (imagesx($im) - 7.5 * strlen($string)) / 2;
$py = 9;
$fontSize = 1;
imagestring($im,fontSize,$px,$py,$string,$color);
imagepng($im);
imagedestroy($im);
?>

function remote_filesize($url,$user = "",$pw = "")
{
    ob_start();
    $ch = curl_init($url);
    curl_setopt($ch,1);
    curl_setopt($ch,CURLOPT_NOBODY,1);
    if(!empty($user) && !empty($pw))
    {
        $headers = array('Authorization: Basic ' .  base64_encode("$user:$pw"));
        curl_setopt($ch,CURLOPT_HTTPHEADER,$headers);
    }
    $ok = curl_exec($ch);
    curl_close($ch);
    $head = ob_get_contents();
    ob_end_clean();
    $regex = '/Content-Length:s([0-9].+?)s/';
    $count = preg_match($regex,$head,$matches);
    return isset($matches[1]) ? $matches[1] : "unknown";
}

<?php
$file = "http://koonk.com/images/logo.png";
$size = remote_filesize($url);
echo $size;
?>

<?php
$pdf_file   = './pdf/demo.pdf';
$save_to    = './jpg/demo.jpg';     //make sure that apache has permissions to write in this folder! (common problem)
//execute ImageMagick command 'convert' and convert PDF to JPG with applied settings
exec('convert "'.$pdf_file.'" -colorspace RGB -resize 800 "'.$save_to.'"',$output,$return_var);
if($return_var == 0) {              //if exec successfuly converted pdf to jpg
    print "Conversion OK";
}
else print "Conversion failed.".$output;
?>

function get_tiny_url($url)  
{  
    $ch = curl_init();  
    $timeout = 5;  
    curl_setopt($ch,'http://tinyurl.com/api-create.php?url='.$url);  
    curl_setopt($ch,1);  
    curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);  
    $data = curl_exec($ch);  
    curl_close($ch);  
    return $data;  
}

<?php
$url = "http://blog.koonk.com/2015/07/Hello-World";
$tinyurl = get_tiny_url($url);
echo $tinyurl;
?>

function str_between($string,$start,$end)
{ 
$string = " ".$string; $ini = strpos($string,$start); if ($ini == 0) return ""; $ini += strlen($start); $len = strpos($string,$ini) - $ini; return substr($string,$ini,$len); }
function get_youtube_download_link(){
    $youtube_link = $_GET['youtube'];
    $youtube_page = file_get_contents($youtube_link);
    $v_id = str_between($youtube_page,"&video_id=","&");
    $t_id = str_between($youtube_page,"&t=","&");
    $flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id";
    $hq_flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=6";
    $mp4_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=18";
    $threegp_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=17";
    echo "ttDownload (right-click > save as):ntt";
    echo "<a href="$flv_link">FLV</a>ntt";
    echo "<a href="$hq_flv_link">HQ FLV (if available)</a>ntt";
    echo "<a href="$mp4_link">MP4</a>ntt";
    echo "<a href="$threegp_link">3GP</a>n";
}

Facebook (x mins age,y hours ago etc)
function nicetime($date)
{
    if(empty($date)) {
        return "No date provided";
    }
      
    $periods         = array("second","minute","hour","day","week","month","year","decade");
    $lengths         = array("60","60","24","7","4.35","12","10");
      
    $now             = time();
    $unix_date         = strtotime($date);
      
       // check validity of date
    if(empty($unix_date)) {    
        return "Bad date";
    }
    // is it future date or past date
    if($now > $unix_date) {    
        $difference     = $now - $unix_date;
        $tense         = "ago";
          
    } else {
        $difference     = $unix_date - $now;
        $tense         = "from now";
    }
      
    for($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) {
        $difference /= $lengths[$j];
    }
      
    $difference = round($difference);
      
    if($difference != 1) {
        $periods[$j].= "s";
    }
      
    return "$difference $periods[$j] {$tense}";
}

<?php
$date = "2015-07-05 03:45";
$result = nicetime($date); // 2 days ago
?>

47、黑名单过滤

function is_spam($text,$file,$split = ':',$regex = false){ 
    $handle = fopen($file,'rb'); 
    $contents = fread($handle,filesize($file)); 
    fclose($handle); 
    $lines = explode("n",$contents); 
    $arr = array(); 
    foreach($lines as $line){ 
        list($word,$count) = explode($split,$line); 
        if($regex) 
            $arr[$word] = $count; 
        else 
            $arr[preg_quote($word)] = $count; 
    } 
    preg_match_all("~".implode('|',array_keys($arr))."~",$text,$matches); 
    $temp = array(); 
    foreach($matches[0] as $match){ 
        if(!in_array($match,$temp)){ 
            $temp[$match] = $temp[$match] + 1; 
            if($temp[$match] >= $arr[$word]) 
                return true; 
        } 
    } 
    return false; 
} 

$file = 'spam.txt'; 
$str = 'This string has cat,dog word'; 
if(is_spam($str,$file)) 
    echo 'this is spam'; 
else 
    echo 'this is not spam';

ab:3
dog:3
cat:2
monkey:2

48、随机颜色生成器

function randomColor() { 
    $str = '#'; 
    for($i = 0 ; $i < 6 ; $i++) { 
        $randNum = rand(0,15); 
        switch ($randNum) { 
            case 10: $randNum = 'A'; break; 
            case 11: $randNum = 'B'; break; 
            case 12: $randNum = 'C'; break; 
            case 13: $randNum = 'D'; break; 
            case 14: $randNum = 'E'; break; 
            case 15: $randNum = 'F'; break; 
        } 
        $str .= $randNum; 
    } 
    return $str; 
} 
$color = randomColor();

49、从网络下载文件

set_time_limit(0); 
// Supports all file types 
// URL Here: 
$url = 'http://somsite.com/some_video.flv'; 
$pi = pathinfo($url); 
$ext = $pi['extension']; 
$name = $pi['filename']; 

// create a new cURL resource 
$ch = curl_init(); 

// set URL and other appropriate options 
curl_setopt($ch,$url); 
curl_setopt($ch,false); 
curl_setopt($ch,true); 
curl_setopt($ch,CURLOPT_AUTOREFERER,CURLOPT_FOLLOWLOCATION,true); 

// grab URL and pass it to the browser 
$opt = curl_exec($ch); 

// close cURL resource,and free up system resources 
curl_close($ch); 

$saveFile = $name.'.'.$ext; 
if(preg_match("/[^0-9a-z._-]/i",$saveFile)) 
$saveFile = md5(microtime(true)).'.'.$ext; 

$handle = fopen($saveFile,'wb'); 
fwrite($handle,$opt); 
fclose($handle);

50、Alexa/Google Page Rank

function page_rank($page,$type = 'alexa'){ 
    switch($type){ 
        case 'alexa': 
            $url = 'http://alexa.com/siteinfo/'; 
            $handle = fopen($url.$page,'r'); 
            break; 
        case 'google': 
            $url = 'http://google.com/search?client=navclient-auto&ch=6-1484155081&features=Rank&q=info:';
            $handle = fopen($url.'http://'.$page,'r'); 
            break; 
    } 
    $content = stream_get_contents($handle); 
    fclose($handle); 
    $content = preg_replace("~(n|t|ss+)~",$content); 
    switch($type){ 
        case 'alexa': 
            if(preg_match('~<div class="data (down|up)"><img.+?>(.+?) </div>~im',$matches)){ 
                return $matches[2]; 
            }else{ 
            return FALSE; 
            } 
            break; 
        case 'google': 
            $rank = explode(':',$content); 
            if($rank[2] != '') 
                return $rank[2]; 
            else 
                return FALSE; 
            break; 
        default: 
            return FALSE; 
            break; 
    } 
} 
// Alexa Page Rank: 
echo 'Alexa Rank: '.page_rank('techug.com'); 
echo '
'; 
// Google Page Rank 
echo 'Google Rank: '.page_rank('techug.com','google');

51、强制下载文件

$filename = $_GET['file']; //Get the fileid from the URL 
// Query the file ID 
$query = sprintf("SELECT * FROM tableName WHERE id = '%s'",mysql_real_escape_string($filename)); 
$sql = mysql_query($query); 
if(mysql_num_rows($sql) > 0){ 
    $row = mysql_fetch_array($sql); 
    // Set some headers 
    header("Pragma: public"); 
    header("Expires: 0"); 
    header("Cache-Control: must-revalidate,post-check=0,pre-check=0"); 
    header("Content-Type: application/force-download"); 
    header("Content-Type: application/octet-stream"); 
    header("Content-Type: application/download"); 
    header("Content-Disposition: attachment; filename=".basename($row['FileName']).";"); 
    header("Content-Transfer-Encoding: binary"); 
    header("Content-Length: ".filesize($row['FileName'])); 

    @readfile($row['FileName']); 
    exit(0); 
}else{ 
    header("Location: /"); 
    exit; 
}

52、通过Email显示用户的Gravatar头像

$gravatar_link = 'http://www.gravatar.com/avatar/' . md5($comment_author_email) . '?s=32';
echo '<lt;img src="' . $gravatar_link . '" />';

53、通过cURL获取RSS订阅数

$ch = curl_init();
curl_setopt($ch,'https://feedburner.google.com/api/awareness/1.0/GetFeedData?id=7qkrmib4r9rscbplq5qgadiiq4');
curl_setopt($ch,2);
$content = curl_exec($ch);
$subscribers = get_match('/circulation="(.*)"/isU',$content);
curl_close($ch);

54、时间差异计算函数

function ago($time)
{
    $periods = array("second","decade");
    $lengths = array("60","10");
    $now = time();
    $difference = $now - $time;
    $tense = "ago";
    for($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) {
        $difference /= $lengths[$j];
    }
    $difference = round($difference);
    if($difference != 1) {
        $periods[$j].= "s";
    }
    return "$difference $periods[$j] 'ago' ";
}

55、裁剪图片

$filename= "test.jpg";
list($w,$h,$type,$attr) = getimagesize($filename);
$src_im = imagecreatefromjpeg($filename);

$src_x = '0'; // begin x
$src_y = '0'; // begin y
$src_w = '100'; // width
$src_h = '100'; // height
$dst_x = '0'; // destination x
$dst_y = '0'; // destination y

$dst_im = imagecreatetruecolor($src_w,$src_h);
$white = imagecolorallocate($dst_im,255);
imagefill($dst_im,$white);

imagecopy($dst_im,$src_im,$dst_x,$dst_y,$src_x,$src_y,$src_w,$src_h);

header("Content-type: image/png");
imagepng($dst_im);
imagedestroy($dst_im);

56、检查网站是否宕机

function Visit($url){
    $agent = "Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)";$ch=curl_init();
    curl_setopt ($ch,$url );
    curl_setopt($ch,CURLOPT_USERAGENT,$agent);
    curl_setopt ($ch,1);
    curl_setopt ($ch,CURLOPT_VERBOSE,5);
    curl_setopt($ch,FALSE);
    curl_setopt($ch,CURLOPT_SSLVERSION,3);
    curl_setopt($ch,FALSE);
    $page=curl_exec($ch);
    //echo curl_error($ch);
    $httpcode = curl_getinfo($ch,CURLINFO_HTTP_CODE);
    curl_close($ch);
    if($httpcode>=200 && $httpcode<300) return true;
    else return false;
}
if (Visit("http://www.google.com"))
    echo "Website OK"."n";
else
    echo "Website DOWN";

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