Php mailbox, URL, mobile phone number legality regular _ PHP Tutorial

Php email address, URL, and mobile phone number validity regular. 1. Email judgment: the code is as follows? Phpfunctionis_email ($ email) {returnstrlen ($ email) 6preg_match (^ [w-.] + @ [w-] + (. w +) + $, $ email );}? 2. Url determination: the code is as follows: functionis_url ($ str 1. Email judgment:

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

2. determine the 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 );
}

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