<?php//检验指定字符是否为空function is_empty($input){return ($input == '') ? true : false;}//验证是否为指定长度的字母/数字组合function check_len($input,$len){return (strlen($input) <= $len) ? true : false;}function fun_text1($num1,$num2,$str){Return (preg_match("/^[a-zA-Z0-9]{".$num1.",".$num2."}$/",$str))?true:false;}//验证是否为指定长度数字function fun_text2($num1,$num2,$str){return (preg_match("/^[0-9]{".$num1.",".$num2."}$/i",$str))?true:false;}//验证是否为指定长度汉字function fun_font($num1,$num2,$str){// preg_match("/^[\xa0-\xff]{1,4}$/", $string);return (preg_match("/^([\x81-\xfe][\x40-\xfe]){".$num1.",".$num2."}$/",$str))?true:false;}//验证×××号码function fun_status($str){return (preg_match('/(^([\d]{15}|[\d]{18}|[\d]{17}x)$)/',$str))?true:false;}//验证邮件地址function fun_email($str){return (preg_match('/^[_\.0-9a-z-]+@([0-9a-z][0-9a-z-]+\.)+[a-z]{2,4}$/',$str))?true:false;}//验证电话号码function fun_phone($str){return (preg_match("/^((\(\d{3}\))|(\d{3}\-))?(\(0\d{2,3}\)|0\d{2,3}-)?[1-9]\d{6,7}$/",$str))?true:false;}//验证邮编function fun_zip($str){return (preg_match("/^[1-9]\d{5}$/",$str))?true:false;}//验证url地址function fun_url($str){return (preg_match("/^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$/",$str))?true:false;}// 数据入库 转义 特殊字符 传入值可为字符串 或 一维数组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 $data;}// 数据出库 还原 特殊字符 传入值可为字符串 或 一/二维数组function data_revert(&$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 $data;}// 数据显示 还原 数据格式 主要用于内容输出 传入值可为字符串 或 一/二维数组// 执行此方法前应先data_revert()，表单内容无须此还原function data_show(&$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","<br>\n",$data[$k1][$k2]);}}else{$data[$k1]=nl2br(htmlspecialchars($data[$k1]));$data[$k1]=str_replace(" "," ",$data[$k1]);$data[$k1]=str_replace("\n","<br>\n",$data[$k1]);}}}else{$data=nl2br(htmlspecialchars($data));$data=str_replace(" "," ",$data);$data=str_replace("\n","<br>\n",$data);}Return $data;}?>

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