Regular Expression Wed Verification Application (40), regular expression wed

Regular Expression Wed Verification Application (40), regular expression wed
Email address verification

<? Php/* verify email address */function checkMail ($ email) {// user name, in the format of "\ w", "-", or ". $ email_name = "\ w | (\ w [-. \ w] * \ w) "; // the first section of the domain name. The rule is similar to the user name, excluding the". "$ code_at =" @ "; $ per_domain =" \ w | (\ w [-\ w] * \ w) "; // the middle part of the domain name, up to two segments $ mid_domain = "(\. ". $ per_domain. ") {0, 2}"; // the last segment of the domain name, which can only be ". com ",". org "or". net "$ end_domain = "(\. (com | net | org) "; $ rs = preg_match ("/^ {$ email_name }@{$ per_domain }{$ mid_domain} {$ end_domain} $ /", $ email); return (bool) $ rs;} // test, under Var_dump (checkMail ("root @ localhost"); var_dump (checkMail ("Frank.Roulan@esun.edu.org"); var_dump (checkMail ("Tom.024-1234@x-power_1980.mail-address.com");?>

URL address verification

<? Php/* Verify the URL address */function checkDomain ($ domain) {return ereg ("^ (http | ftp) s? : // (Www \.)?. + (Com | net | org) $ ", $ domain) ;}$ rs = checkDomain (" www.taodoor.com "); // returns false $ rs = checkDomain (" http://www.taodoor.com "); // returns true?>

Phone number

<? Php/* Verify the phone number */function checkTelno ($ tel) {// remove the extra separator $ tel = ereg_replace ("[\(\)\. -] "," ", $ tel); // only contains numbers. It must be at least a six-digit phone number (that is, no area code) if (ereg ("^ \ d + $", $ tel) {return true ;}else {return false ;}$ rs = checkTelno ("(086) -0411-12345678 "); // returns true?>

Postal code verification

<? Php/* Verify zip code */function checkZipcode ($ code) {// remove the extra separator $ code = preg_replace ("/[\. -]/"," ", $ code); // contains a 6-bit zip code if (preg_match ("/^ \ d {6} $ /", $ code) {return true;} else {return false; }}$ rs = checkZipCode ("123456"); // returns true?>