php中email郵件地址驗證大全集合

CodeIgniter架構郵件地址驗證

代碼如下	複製代碼
/**      * Valid Email      *      * @access  public      * @param   string      * @return  bool      */     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郵件正則驗證

代碼如下	複製代碼
/**  * 判斷email格式是否正確  * @param $email  */ function is_email($email) {     return strlen($email) > 6 && preg_match("/^[w-.]+@[w-.]+(.w+)+$/", $email); }

WordPress郵件地址驗證函式

代碼如下

複製代碼

/**  * Verifies that an email is valid.  *  * Does not grok i18n domains. Not RFC compliant.  *  * @since 0.71  *  * @param string $email Email address to verify.  * @param boolean $deprecated Deprecated.  * @return string|bool Either false or the valid email address.  */ function is_email( $email, $deprecated = false ) {     if ( ! empty( $deprecated ) )         _deprecated_argument( __FUNCTION__, '3.0' );       // Test for the minimum length the email can be     if ( strlen( $email ) < 3 ) {         return apply_filters( 'is_email', false, $email, 'email_too_short' );     }       // Test for an @ character after the first position     if ( strpos( $email, '@', 1 ) === false ) {         return apply_filters( 'is_email', false, $email, 'email_no_at' );     }       // Split out the local and domain parts     list( $local, $domain ) = explode( '@', $email, 2 );       // LOCAL PART     // Test for invalid characters     if ( !preg_match( '/^[a-zA-Z0-9!#$%&'*+/=?^_`{|}~.-]+$/', $local ) ) {         return apply_filters( 'is_email', false, $email, 'local_invalid_chars' );     }       // DOMAIN PART     // Test for sequences of periods     if ( preg_match( '/.{2,}/', $domain ) ) {         return apply_filters( 'is_email', false, $email, 'domain_period_sequence' );     }       // Test for leading and trailing periods and whitespace     if ( trim( $domain, " tnrx0B." ) !== $domain ) {         return apply_filters( 'is_email', false, $email, 'domain_period_limits' );     }       // Split the domain into subs     $subs = explode( '.', $domain );       // Assume the domain will have at least two subs     if ( 2 > count( $subs ) ) {         return apply_filters( 'is_email', false, $email, 'domain_no_periods' );     }       // Loop through each sub     foreach ( $subs as $sub ) {         // Test for leading and trailing hyphens and whitespace         if ( trim( $sub, " tnrx0B-" ) !== $sub ) {             return apply_filters( 'is_email', false, $email, 'sub_hyphen_limits' );         }           // Test for invalid characters         if ( !preg_match('/^[a-z0-9-]+$/i', $sub ) ) {             return apply_filters( 'is_email', false, $email, 'sub_invalid_chars' );         }     }       // Congratulations your email made it!     return apply_filters( 'is_email', $email, $email, null ); }

例 自己寫的

 

代碼如下	複製代碼
$email = "tanklo_--vehy@yahoo.com.cn";     function check_email($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);