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为大家讲述一下 php强力验证邮件地址函数,感兴趣的小伙伴,下面一起跟随脚本之家 jb51.cc的小编来看看吧。 经测试代码如下:
<?php
/**
* 验证邮件地址函数
*
* @param
* @arrange (512.笔记) jb51.cc
**/
function validateEmail($email)
{
$isValid = true;
$atIndex = strrpos($email,"@");
if (is_bool($atIndex) && !$atIndex)
{
$isValid = false;
}
else
{
$domain = substr($email,$atIndex+1);
$local = substr($email,$atIndex);
$localLen = strlen($local);
$domainLen = strlen($domain);
if ($localLen < 1 || $localLen > 64)
{
// local part length exceeded
$isValid = false;
}
else if ($domainLen < 1 || $domainLen > 255)
{
// domain part length exceeded
$isValid = false;
}
else if ($local[0] == '.' || $local[$localLen-1] == '.')
{
// local part starts or ends with '.'
$isValid = false;
}
else if (preg_match('/../',$local))
{
// local part has two consecutive dots
$isValid = false;
}
else if (!preg_match('/^[A-Za-z0-9-.]+$/',$domain))
{
// character not valid in domain part
$isValid = false;
}
else if (preg_match('/../',$domain))
{
// domain part has two consecutive dots
$isValid = false;
}
else if
(!preg_match('/^(\.|[A-Za-z0-9!#%&`_=/$'*+?^{}|~.-])+$/',str_replace("\","",$local)))
{
// character not valid in local part unless
// local part is quoted
if (!preg_match('/^"(\"|[^"])+"$/',$local)))
{
$isValid = false;
}
}
if ($isValid && !(checkdnsrr($domain,"MX") || checkdnsrr($domain,"A")))
{
// domain not found in DNS
$isValid = false;
}
}
return $isValid;
}
/*** 来自脚本之家 jb51.cc(jb51.cc) ***/ (编辑:安卓应用网)
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