<?php
/***
* Class Validit used for validating user submitted data.
* Author: Richard Hayes
* E-mail: richard_c_hayes@yahoo.co.uk
* Web: www.cuttingimage.com
* Date Created: 28-05-03
* Last Modified: 28-05-03
* Version: 1.0
* License: GPL
***/
class Validit
{
/***
* Stores error messages for when the user submits invalid data
* @type array
***/
var $errorList;
/***
* Constructor
***/
function Validit()
{
$this -> errorList = array();
}
/***
* Used by validating methods as a final call, removes whitespace
* @param $value data for cleaning
* @returns void
***/
function trim(&$value)
{
$value = trim($value);
}
/***
* Adds an error message to the array
* @return void
***/
function setError($msg)
{
$this -> errorList[] = $msg;
}
/***
* Reseting the error list
* @returns void
***/
function resetErrorList()
{
unset($this -> errorList);
}
/***
* Returns error list
* @returns array
***/
function getErrors()
{
return $this -> errorList;
}
/***
* Check if string is alphabetic
* @param $value string to check
* @param $msg error message for non-alphabetic strings
* @param $allow additional characters to allow other than letters. For space chars use reg-ex "[:space:]"
* @returns mixed
***/
function alphaCheck(&$value, $msg, $allow = '')
{
preg_match('/^[a-zA-Z'.$allow.']+$/', $value) ? $this -> trim($value) : $this -> setError($msg);
return $value;
}
/***
* Check for numeric values
* @param $value to check
* @param $msg error message for non-numeric values
* @returns mixed
***/
function numericCheck(&$value, $msg)
{
is_numeric($value) ? $this -> trim($value) : $this -> setError($msg);
return $value;
}
/***
* Check for alphanumeric values
* @param $value to check
* @param $msg error message for non- alphanumeric values
* @param $allow additional characters to allow other than integers and letters. For space chars use reg-ex "[:space:]"
* @returns mixed
***/
function alphaNumericCheck(&$value, $msg, $allow = '')
{
preg_match('/^[a-zA-Z0-9'.$allow.']+$/', $value) ? $this -> trim($value) : $this -> setError($msg);
return $value;
}
/***
* Check for identical comparisons
* @param $value value one to compare
* @param $value2 value two to compare
* @param $msg error message for invalid email addresses
* @returns mixed
***/
function compareCheck(&$value, $value2, $msg)
{
$value === $value2 ? $this -> trim($value) : $this -> setError($msg);
return $value;
}
/***
* Check that field complies to max and min length restrictions
* @param $value string to check
* @param $msg error message for empty strings
* @param $max_length maximum length the data is allowed to be
* @param $min_length minimum length of string
* @returns mixed
***/
function lengthCheck(&$value, $msg, $max_length, $min_length = 0)
{
!(strlen($value) > $max_length) && !(strlen($value) < $min_length) ? $this -> trim($value) : $this -> setError($msg);
return $value;
}
/***
* Check for valid email addresses
* @param $value email to check
* @param $msg error message for invalid email addresses
* @returns mixed
***/
function emailCheck(&$value, $msg)
{
$pattern = '/^([a-zA-Z0-9])+([\.a-zA-Z0-9_-])*@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-]+)+/';
preg_match($pattern, $value) ? $this -> trim($value) : $this -> setError($msg);
return $value;
}
/***
* Reseting the error list
* @returns void
***/
function resetErrorMessage()
{
unset($this -> errorList);
}
}
?>
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