Commonly used form validation classes, with this, general validations are all available. _PHP Tutorial

/**
* Page function: Common form validation classes
* Author: Xinran Suifeng
* Creation time: 2006-3-6
* 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",$str))?true:false;
}
//Verify whether For Chinese characters of specified length
function fun_font($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($str) (d{3}))|(d{3}-))?((0d{2,3})|0d{2,3}-)?[1-9]d{6,7}$/" ,$str))?true:false; {5}$/",$str))?true:false;
}
//Verify url address
function fun_url($str)
{
return (preg_match("/ ^http://[A-Za-z0-9]+.[A-Za-z0-9]+[/=?%-&_~`@[]':+!]*([^<> ;""])*$/",$str))?true:false;
}

// Data entry Escape special characters The input 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 = & gt; $ v)
{
$ Data [$ k] = addslashes ($ v);
}
}
el
{
$ data = addslashes($data);
}
}
Return $data; /Two-dimensional array
function data_revert(&$data)
{
if (is_array($data))
{
foreach ($data as $k1 => $v1)
{
if (is_array($v1))
{
foreach ($v1 as $k2 => $v2)
{ 2 ] = stripslashes($v2);                                   > } 
}
else
{
$data = stripslashes($data);
}
Return $data;
}

// Mainly used for data display and restore data format In the content output, the input 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 }
else
{
$data[$k1] =nl2br(htmlspecialchars($data[$k1]));
$data[$k1]=str_replace(" "," ",$data[$k1]);
$data[$k1]= str_replace("n","
n",$data[$k1]); htmlspecialchars($data));
$data=str_replace(" "," ",$data);
$data=str_replace("n","
n",$data);
}
Return $data;
}
}
?>





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