Examples of common php form verification usage

This article mainly introduces common php form verification class usage, and analyzes common php form element verification skills. For more information, see the following example. Share it with you for your reference. The details are as follows:

<? Php/*** page function: Common form verification class * author: Happy With The Wind * QQ: 276624915 */class class_post {// verify whether the function fun_text1 ($ num1, $ num2, $ str) is a combination of letters/numbers of the specified length) {Return (preg_match ("/^ [a-zA-Z0-9] {". $ num1 .",". $ num2. "} $/", $ str ))? True: false;} // verify whether the specified length number is function fun_text2 ($ num1, $ num2, $ str) {return (preg_match ("/^ [0-9] {". $ num1 .",". $ num2. "} $/I", $ str ))? True: false;} // verify whether the function fun_font ($ num1, $ num2, $ str) is of the specified length) {// preg_match ("/^ [\ xa0-\ xff] {1, 4} $/", $ string ); return (preg_match ("/^ ([\ x81-\ xfe] [\ x40-\ xfe]) {". $ num1 .",". $ num2. "} $/", $ str ))? True: false;} // verify the ID card number function fun_status ($ str) {return (preg_match ('/(^ ([\ d] {15} | [\ d] {18} | [\ d] {17} x) $ )/', $ str ))? True: false;} // verify the email address function fun_email ($ str) {return (preg_match ('/^ [_\. 0-9a-z-] + @ ([0-9a-z] [0-9a-z-] + \.) + [a-z] {2, 4} $/', $ str ))? True: false;} // verify the phone number function fun_phone ($ str) {return (preg_match ("/^ (\ d {3 }\)) | (\ d {3 }\-))? (\ (0 \ d {2, 3} \) | 0 \ d {2, 3 }-)? [1-9] \ d {6, 7} $/", $ str ))? True: false;} // verify the ZIP code function fun_zip ($ str) {return (preg_match ("/^ [1-9] \ d {5} $ /", $ str ))? True: false;} // verify the url address function fun_url ($ str) {return (preg_match ("/^ http: \// [A-Za-z0-9] + \. [A-Za-z0-9] + [\/= \? % \-&_~ '@ [\] \': +!] * ([^ <> \ "\"]) * $/", $ Str ))? True: false;} // the input value of special characters for data receiving escape can be a string or a one-dimensional array function data_join (& $ data) {if (get_magic_quotes_gpc () = false) {if (is_array ($ data) {foreach ($ data as $ k => $ v) {$ data [$ k] = addslashes ($ v );}} else {$ data = addslashes ($ data) ;}} Return $ data ;} // data warehouse restoration special character input values can be strings or one/two-dimensional array function data_revert (& $ data) {if (is_array ($ data )) {foreach ($ data as $ k1 => $ v1) {if (is_array ($ v1) {foreach ($ v1 as $ k2 => $ v2) {$ data [$ k1] [$ k2] = stripslashes ($ v2) ;}} else {$ data [$ k1] = stripslashes ($ v1 );}}} else {$ data = stripslashes ($ data);} Return $ data ;} // The Data Display restoration data format is mainly used for the input value of the content output to be a string or a/two-dimensional array // before executing this method, data_revert (), function data_show (& $ data) {if (is_array ($ data) {foreach ($ data as $ k1 => $ v1) {if (is_array ($ v1) {foreach ($ v1 as $ k2 => $ v2) {$ data [$ k1] [$ k2] = nl2br (htmlspecialchars ($ data [$ k1] [$ k2]); $ data [$ k1] [$ k2] = str_replace ("", "", $ data [$ k1] [$ k2]); $ data [$ k1] [$ k2] = str_replace ("\ n ","
\ N ", $ data [$ k1] [$ k2]) ;}} else {$ data [$ k1] = nl2br (htmlspecialchars ($ data [$ k1]); $ data [$ k1] = str_replace ("", "", $ data [$ k1]); $ data [$ k1] = str_replace ("\ n ","
\ N ", $ data [$ k1]) ;}} else {$ data = nl2br (htmlspecialchars ($ data); $ data = str_replace ("","", $ data); $ data = str_replace ("\ n ","
\ N ", $ data) ;}return $ data ;}}?>

I hope this article will help you with php programming.