php url, date, ip, email address detection class code

php tutorial url, date, ip, email address detection class code This article provides a really regular expression to detect url address, date format, ip address, and e-mail address is valid verification code.

class validation {
function check_email ($ value) {// check a email address
return (bool) preg_match ('/ ^ [a-z0-9 ._% + -] + @ (?: [a-z0-9 -] +.) + [az] {2,4} $ / i' , $ value);
}

function check_ip ($ value) {// check a ip address
return (bool) preg_match ("/ ^ (?: (?: 25 [0-5] | 2 [0-4] [0-9] | [01]? [0-9] [0-9]?) .) {4} $ / ", $ value.". ");
}

function check_date ($ date, $ format = "dd / mm / yy") {// check a date
if (! preg_match ("/ ([0-9] +) ([./-]) ([0-9] +) (2) ([0-9] +) /", $ date, $ m) ) return false;
$ f = explode ("/", $ format);
$ d [$ f [0]] = $ m [1];
$ d [$ f [1]] = $ m [3];
$ d [$ f [2]] = $ m [5];
return checkdate ($ d ['mm'], $ d ['dd'], $ d ['yyyy']. $ d ['yy']);
}

function check_url ($ url) {// check a url
return (bool) preg_match ("/ ^ (?: (?: ht | f) tp (?: s?): // | ~ / / / :: d +)? (?: (?: / [^ /? #] +) +)? /? (?:? [^?] *)? (#. *)? $ / i " ;
}
}
// call method

$ validation = new validation ();
// test the mailbox
var_dump ($ validation-> check_email ("abc@abc.abc.com")); // true
var_dump ($ validation-> check_email ("abc.abc@abc.com")); // false
// ip detection

var_dump ($ validation-> check_ip ("127.0.0.1.0"));
var_dump ($ validation-> check_ip ("256.0.0.1")); // Date format detection

// true
var_dump ($ validation-> check_date ("2010/1/20", "yyyy / mm / dd"));
var_dump ($ validation-> check_date ("1/20/10", "mm / dd / yy"));
var_dump ($ validation-> check_date ("2010-20-1", "yyyy / dd / mm"));
// false
var_dump ($ validation-> check_date ("2010/2/29", "yyyy / mm / dd"));
var_dump ($ validation-> check_date ("2010/1/20", "yyyy / dd / mm"));
var_dump ($ validation-> check_date ("2010-20 / 1", "yyyy / dd / mm"));
/ *
The use of such methods is very simple, as long as the creation of categories can easily verify the mailbox, date, address, ip is legal Oh.
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