PHP email, website, mobile phone number legality rules_PHP tutorial

1. Judgment Email:

The code is as follows
function is_email($email){
return strlen($email) > 6 && preg_match("/^[w-.]+@[w-]+(.w+)+$/", $email);
}
?>

2. Determine Url:

The code is as follows

function is_url($str){
return preg_match("/^http://[A-Za-z0-9]+.[A-Za-z0-9]+[/=?%-&_~`@[]':+!]*( [^<>"])*$/", $str);
}

3. Determine the mobile phone number:

The code is as follows
function is_mobile($str){
Return preg_match("/^(((d{3}))|(d{3}-))?13d{9}$/", $str);
}

http://www.bkjia.com/PHPjc/371790.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/371790.htmlTechArticle1. Determine Email: The code is as follows?php function is_email($email){ return strlen($email) 6 preg_match (/^[w-.]+@[w-]+(.w+)+$/, $email); } ? 2. Determine Url: The code is as follows function is_url($str...