firepages,
Thanks for your help. Your code helped me make the script so I wouldn't have to define each variable like I had to before, but only now I can't get it to display an error based off my error checking classes. With your script, it just checks to make sure a value is entered, instead of validing a number, e-mail address etc. The code I am using is pasted below. I would really appreciate it if you could tell me how I can make it create the $field_error variable if the value doesn't pass the error checking class.
<?php
if($submit) {
// include class
include("FormValidator.class.inc");
// initiate object
$fv=new FormValidator();
// perform validation
// variables=isEmpty, isString, isNumber, isEmailAddress
$fv->isString("name", "Please enter your \"Name\".");
$fv->isEmailAddress("email","Please enter your \"E-mail Address\".");
$fv->isEmpty("address","Please enter your \"Address\".");
// check for errors
if ($fv->isError())
{
$errors=$fv->getErrorList();
echo "<p class=\"error\">The form could not be submitted because one or more error(s) occurred.</p><p class=\"error\">Please make the changes below and resubmit the form:</p>";
echo "<ul>";
foreach ($errors as $e)
{
echo "<li class=\"error\">" . $e['msg'];
}
echo "</ul>";
}
$required=array('name', 'email', 'address');
foreach($required as $r) {
if(!$_POST[$r]){
${$r."_error"}='style="background-color:#FF0000;"';
$error=1;
}
}
if(!$error) { //add to database, etc.
Here is the validator class that is called from the script that holds my form:
<?php
/*
All source code copyright and proprietary Melonfire, 2002. All content, brand names and trademarks copyright and proprietary Melonfire, 2002. All rights reserved. Copyright infringement is a violation of law.
*/
// FormValidator.class.inc
// class to perform form validation
class FormValidator
{
// private variables
var $_errorList;
// methods (private)
// function to get the value of a variable (field)
function _getValue($field)
{
global ${$field};
return ${$field};
}
// methods (public)
// constructor
// reset error list
function FormValidator()
{
$this->resetErrorList();
}
// check whether input is empty
function isEmpty($field, $msg)
{
$value = $this->_getValue($field);
if (trim($value) == "")
{
$this->_errorList[] = array("field" => $field, "value" => $value, "msg" => $msg);
return false;
}
else
{
return true;
}
}
// check whether input is a string
function isString($field, $msg)
{
$value = $this->_getValue($field);
if(!is_string($value))
{
$this->_errorList[] = array("field" => $field, "value" => $value, "msg" => $msg);
$field_error='style="background-color:#CC0000; color:#FFFFFF;"';
return false;
}
else
{
return true;
}
}
// check whether input is a number
function isNumber($field, $msg)
{
$value = $this->_getValue($field);
if(!is_numeric($value))
{
$this->_errorList[] = array("field" => $field, "value" => $value, "msg" => $msg);
return false;
}
else
{
return true;
}
}
// check whether input is a valid email address
function isEmailAddress($field, $msg)
{
$value = $this->_getValue($field);
$pattern = "/^([a-zA-Z0-9])+([\.a-zA-Z0-9_-])*@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-]+)+/";
if(preg_match($pattern, $value))
{
return true;
}
else
{
$this->_errorList[] = array("field" => $field, "value" => $value, "msg" => $msg);
return false;
}
}
// return the current list of errors
function getErrorList()
{
return $this->_errorList;
}
// check whether any errors have occurred in validation
// returns Boolean
function isError()
{
if (sizeof($this->_errorList) > 0)
{
return true;
}
else
{
return false;
}
}
// reset the error list
function resetErrorList()
{
$this->_errorList = array();
}
// end
}
?>
Thanks again,
John