PHP邮箱地址正确性验证示例

<?php
/**
* 验证邮箱格式
* edit: www.jb200.com
*/
$email="testgdy_007@163.com";
if (preg_match("/[a-zA-Z0-9]+@[a-zA-Z0-9]+.[a-z]{2,4}/",$email,$mail)){
    echo 'yes<br>';
}else{
    echo 'no<br>';
}
echo "$email??".$email."<>";
echo "$mail??".$mail;
?>