Commonly used form validation classes_PHP tutorial

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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;
}

//Enter data into the database and escape extraordinary 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;

http://www.bkjia.com/PHPjc/445547.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/445547.htmlTechArticleclass 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;...