Usage examples of common PHP form validation classes_PHP tutorial

Usage examples of common PHP form validation classes

This article describes the usage of common PHP form validation classes. Share it with everyone for your reference. The details are as follows:

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/** * Page function: Common form validation classes * Author: Xinran Suifeng * QQ: 276624915 */ class class_post { //Verify whether it is a letter/number combination of the specified length function fun_text1($num1,$num2,$str) { Return (preg_match("/^[a-zA-Z0-9]{".$num1.",".$num2."}$/",$str))?true:false; } //Verify whether it is a number of the specified length function fun_text2($num1,$num2,$str) { return (preg_match("/^[0-9]{".$num1.",".$num2."}$/i",$str))?true:false; } //Verify whether it is a Chinese character of specified length function fun_font($num1,$num2,$str) { // preg_match("/^[xa0-xff]{1,4}$/", $string); return (preg_match("/^([x81-xfe][x40-xfe]){".$num1.",".$num2."}$/",$str))?true:false; } //Verify ID number function fun_status($str) { return (preg_match('/(^([d]{15}|[d]{18}|[d]{17}x)$)/',$str))?true:false; } //Verify email address function fun_email($str){ return (preg_match('/^[_.0-9a-z-] @([0-9a-z][0-9a-z-] .) [a-z]{2,4}$/' ,$str))?true:false; } //Verify phone number function fun_phone($str) { return (preg_match("/^(((d{3}))|(d{3}-))?((0d{2,3})|0d{2,3}-)?[1 -9]d{6,7}$/",$str))?true:false; } //Verify zip code function fun_zip($str) { return (preg_match("/^[1-9]d{5}$/",$str))?true:false; } //Verify url address function fun_url($str) { return (preg_match("/^http://[A-Za-z0-9] .[A-Za-z0-9] [/=?%-&_~`@[]': !]* ([^<>""])*$/",$str))?true:false; } //Data storage escapes special characters. The incoming value 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 $data; } //Data export and restore special characters. The input value can be a string or a one/two-dimensional array function data_revert(&$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 $data; } //Data display and restore data format is mainly used for content output. The incoming value can be a string or a one/two-dimensional array // Data_revert() should be performed before executing this method. The form content does not need to be restored function data_show(&$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 be helpful to everyone’s PHP programming design.

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