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File: Validit.php

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File: Validit.php
Role: Class source
Content type: text/plain
Description: Class
Class: Validit
Validate user submitted data
Author: By
Last change: typo
Date: 20 years ago
Size: 3,691 bytes
 

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<?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);
    }
}
?>