Common form validation classes in PHP

Forms validation classes commonly used in PHP Dynamic Web page development

<?php
Class Class_post
{
Verifies whether a letter/number combination of a specified length
function Fun_text1 ($num 1, $num 2, $STR)
{
Return (Preg_match ("/^[a-za-z0-9]{". $num 1. ",". $num 2. "} $/", $str))? True:false;
}
Verify whether the specified length number
function Fun_text2 ($num 1, $num 2, $STR)
{
Return (Preg_match ("/^[0-9]{". $num 1. ",". $num 2. "} $/i ", $str))? True:false;
}
Verifies if the specified length kanji
function Fun_font ($num 1, $num 2, $STR)
{
Preg_match ("/^[\xa0-\xff]{1,4}$/", $string);
Return (Preg_match/^ ([\x81-\xfe][\x40-\xfe]) {. $num 1. ",". $num 2. "} $/", $str))? True:false;
}
Verify ID Number
function Fun_status ($STR)
{
Return (Preg_match ('/(^) ([\d]{15}|[ \d]{18}| [\d] {17}x) $)/', $str) ' True:false;
}
Verifying e-mail addresses
function Fun_email ($STR) {
Return (Preg_match ('/^[_\.0-9a-z-]+@) ([0-9a-z][0-9a-z-]+\.) +[a-z]{2,4}$/', $str))? True:false;
}
Verifying phone numbers
function Fun_phone ($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 warehousing Escape special characters incoming values can be string or one-dimensional arrays
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 $data; Return (Preg_match (/^ (d{3)) | ( d{3}-))? ((0d{2,3}) |0d{2,3}-)? [1-9]d{6,7}$/, $str)] true:false;
}
Verify ZIP Code
function Fun_zip ($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 warehousing Escape special characters incoming values can be string or one-dimensional arrays
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 out of the library restore special characters incoming value can be a string or a/two-D array
Function Data_revert (& $data)
{
if (Is_array ($data))
{
foreach ($data as $k 1 => $v 1)
{
if (Is_array ($v 1))
{
foreach ($v 1 as $k 2 => $v 2)
{
$data [$k 1][$k 2] = stripslashes ($v 2);
}
}
Else
{
$data [$k 1] = stripslashes ($v 1);
}
}
}
Else
{
$data = Stripslashes ($data);
}
return $data;
}
Data display restore data format mainly for content output incoming value can be a string or a/two-D array
You should data_revert () before executing this method, and the content of the form need not be restored
Function Data_show (& $data)
{
if (Is_array ($data))
{
foreach ($data as $k 1 => $v 1)
{
if (Is_array ($v 1))
{
foreach ($v 1 as $k 2 => $v 2)
{
$data [$k 1][$k 2]=nl2br (Htmlspecialchars ($data [$k 1][$k 2]);
$data [$k 1][$k 2]=str_replace ("", "", $data [$k 1][$k 2]);
$data [$k 1][$k 2]=str_replace ("", "<br>", $data [$k 1][$k 2]);
}
}
Else
{
$data [$k 1]=nl2br (Htmlspecialchars ($data [$k 1])];
$data [$k 1]=str_replace ("", "", $data [$k 1]);
$data [$k 1]=str_replace ("", "<br>", $data [$k 1]);
}
}
}
Else
{
$data =nl2br (Htmlspecialchars ($data));
$data =str_replace ("", "", $data);
$data =str_replace ("", "<br>", $data);
}
return $data;
}
}
?> if (Is_array ($data))
{
foreach ($data as $k 1 => $v 1)
{
if (Is_array ($v 1))
{
foreach ($v 1 as $k 2 => $v 2)
{
$data [$k 1][$k 2]=nl2br (Htmlspecialchars ($data [$k 1][$k 2]);
$data [$k 1][$k 2]=str_replace ("", "", $data [$k 1][$k 2]);
$data [$k 1][$k 2]=str_replace ("", "<br>", $data [$k 1][$k 2]);
}
}
Else
{
$data [$k 1]=nl2br (Htmlspecialchars ($data [$k 1])];
$data [$k 1]=str_replace ("", "", $data [$k 1]);
$data [$k 1]=str_replace ("", "<br>", $data [$k 1]);
}
}
}
Else
{
$data =nl2br (Htmlspecialchars ($data));
$data =str_replace ("", "", $data);
$data =str_replace ("", "<br>", $data);
}
return $data;
}
}
?>