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PHP正则验证Email的方法

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Release: 2016-06-06 20:03:20
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这篇文章主要介绍了PHP正则验证Email的方法,涉及php正则表达式验证的相关技巧,需要的朋友可以参考下

本文实例讲述了PHP正则验证Email的方法。分享给大家供大家参考。具体如下:

64) { // local part length exceeded $isValid = false; } else if ($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('/^"(\\\\"|[^"])+"$/', str_replace("\\\\","",$local))) { $isValid = false; } } if ($isValid && !(checkdnsrr($domain,"MX") || checkdnsrr($domain,"A"))) { // domain not found in DNS $isValid = false; } } return $isValid; } ?>

希望本文所述对大家的php程序设计有所帮助。

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