php中email邮件地址验证大全集合
来源:程序员人生 发布时间:2013-10-25 23:29:27 阅读次数:3235次
在php中地址验证写法各种各样的,下面我来总结几种常用的email地址验证实例,最简单的是直接使用正则表达式preg_match("/^([a-z0-9+_-]+)(.[a-z0-9+_-]+)*@([a-z0-9-]+.)+[a-z]{2,6}$/ix来验证了。
CodeIgniter框架邮件地址验证,代码如下:
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- function valid_email($str)
- {
- return ( ! preg_match("/^([a-z0-9+_-]+)(.[a-z0-9+_-]+)*@([a-z0-9-]+.)+[a-z]{2,6}$/ix", $str)) ? FALSE : TRUE;
- }
- PHPCMS邮件正则验证
- 代码如下 复制代码
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- function is_email($email) {
- return strlen($email) > 6 && preg_match("/^[w-.]+@[w-.]+(.w+)+$/", $email);
- }
WordPress邮件地址验证函数,代码如下:
- function is_email( $email, $deprecated = false ) {
- if ( ! emptyempty( $deprecated ) )
- _deprecated_argument( __FUNCTION__, '3.0' );
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- if ( strlen( $email ) < 3 ) {
- return apply_filters( 'is_email', false, $email, 'email_too_short' );
- }
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- if ( strpos( $email, '@', 1 ) === false ) {
- return apply_filters( 'is_email', false, $email, 'email_no_at' );
- }
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- list( $local, $domain ) = explode( '@', $email, 2 );
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- if ( !preg_match( '/^[a-zA-Z0-9!#$%&'*+/=?^_`{|}~.-]+$/', $local ) ) {
- return apply_filters( 'is_email', false, $email, 'local_invalid_chars' );
- }
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- if ( preg_match( '/.{2,}/', $domain ) ) {
- return apply_filters( 'is_email', false, $email, 'domain_period_sequence' );
- }
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- if ( trim( $domain, " tnrx0B." ) !== $domain ) {
- return apply_filters( 'is_email', false, $email, 'domain_period_limits' );
- }
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- $subs = explode( '.', $domain );
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- if ( 2 > count( $subs ) ) {
- return apply_filters( 'is_email', false, $email, 'domain_no_periods' );
- }
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- foreach ( $subs as $sub ) {
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- if ( trim( $sub, " tnrx0B-" ) !== $sub ) {
- return apply_filters( 'is_email', false, $email, 'sub_hyphen_limits' );
- }
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- if ( !preg_match('/^[a-z0-9-]+$/i', $sub ) ) {
- return apply_filters( 'is_email', false, $email, 'sub_invalid_chars' );
- }
- }
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- return apply_filters( 'is_email', $email, $email, null );
- }
下面分享一个自己写的实例,代码如下:
- $email = "tanklo_--vehy@yahoo.com.cn";
- function check_email($email) {
- $pattern_test = "/([a-z0-9]*[-_.]?[a-z0-9]+)*@([a-z0-9]*[-_]?[a-z0-9]+)+[.][a-z]{2,3}([.][a-z]{2})?/i";
- return preg_match($pattern_test,$email);
- }
- echo check_email($email);
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