PHP实用代码片段（三）

发布时间：2020-05-25 03:05:18 所属栏目：PHP 来源：互联网

导读：1. 目录清单使用下面的 PHP 代码片段可以在一个目录中列出所有文件和文件夹。function list_files($dir){if(is_dir($dir)){if($handle = opendir($dir)){while(($file = readdir($handle)) !== false){if($file != . amp;amp; $file != .. amp;amp; $file !=

1. 目录清单

使用下面的 PHP 代码片段可以在一个目录中列出所有文件和文件夹。

list_files(((( = ((( = ()) !== ( != "." && != ".." && != "Thumbs.db" '..'">'..'
'."n"(

语法：

2. 检测用户语言

使用下面的 PHP 代码片段可以检测用户浏览器所使用的语言。

get_client_language(,='en' ((['HTTP_ACCEPT_LANGUAGE'=(',',['HTTP_ACCEPT_LANGUAGE' ( =(,2((,

3. 查看 CSV 文件

readCSV( = (,'r' (!([] = (,1024(

语法：

4. 从 PHP 数据创建 CSV 文件

generateCsv(, = ', = '"' = ('php://temp','r+' ( ,,,( (!( .= (,8192(

语法：

5. 解析 XML 数据

=" ben A h2o K "//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,'
';
}

6. 解析 JSON 数据

='{"id":1,"name":"rolf","country":"russia","office":["google","oracle"]} '=json_decode( ->name; ->office[0];

7. 获取当前页面 URL

这个 PHP 片段可以帮助你让用户登录后直接跳转到之前浏览的页面。

= "http://" . ['HTTP_HOST'] . ['REQUEST_URI' = ("&","&",

语法：

8. 从任意的 Twitter 账号获取最新的 Tweet

my_twitter( = 1 = "http://search.twitter.com/search.atom?q=from:" . . "&rpp=" . = ((->children() ( (->getName() == "link") = ['href'(->getName() == "content" = . "" '

语法：

9. 转发数量

使用这个 PHP 片段可以检测你的页面 URL 有多少转发数量。

tweetCount( = ("http://api.tweetmeme.com/url_info?url=". = SimpleXmlElement( = ->story->( 0

语法：

10. 计算两个日期的差

diff( "difference " . ->y . " years," . ->m." months,".->d." days " "difference " . ->days . " days "--------------------------------------------------------/

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 '
```
';

print_r( _date_diff( strtotime($date),time() ) );

echo '
```
';
?>

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