form validation

Destramic · May 3, 2010

im writing a form validation script and have come across a small problem.

the problem im having is when set my own error message:

$Form->Required_Field("name", "text", "please eneter your name)");

then after viewing the form and entering an email it will show up with 2 errors for the name field...if anyone can help please

form_Validation.php

<?php

define("FORM_ERROR_REQUIRED_VALUE", "%s : Please enter a %s");
define("FORM_ERROR_REQUIRED_EMAIL", "%s : Please enter a valid E-mail Address. Format - [email protected].");

class Form_Validation
{
public $Fields         = array();
public $Error_Messages = array();
public $Errors         = false;

public function Required_Field($field_name, $field_type, $error_message = NULL)
{
	$this->Fields[$field_name]['name']          = $field_name;
	$this->Fields[$field_name]['type']          = $field_type;
	$this->Fields[$field_name]['error_message'] = $error_message;
}

public function Validate_Form()
{
	foreach ($this->Fields as $field)
	{
		$field_name       = $field['name'];
		$field_type       = $field['type'];
		$error_message    = $field['error_message'];
	 	$field_value      = $_POST[$field_name];

		switch ($field_type)
		{
			case "text":
				if (empty($field_value))
				{
					$default_error_message = sprintf(FORM_ERROR_REQUIRED_VALUE, $field_name, $field_name);
				}				
			break;

			case "email":
				if (!$this->Email_Validation($field_value))
				{
					$default_error_message = sprintf(FORM_ERROR_REQUIRED_EMAIL, $field_name);
				}
			break;

		}

				if ($error_message && $default_error_message)
			{
				$this->Set_Error_Message($error_message);
			}
		else
		{
			$this->Set_Error_Message($default_error_message);
		}
	}
}

public function Display_Errors()
{
	foreach ($this->Error_Messages as $errors)
	{
		echo $errors . "<br />\n";	
	}
}

public function Set_Error_Message($error_message)
{
	if (!in_array($error_message, $this->Error_Messages))
	{
		$this->Error_Messages[]= $error_message;
	}
}

public function Email_Validation($email)
{
	return eregi("^[_\.0-9a-zA-Z-]+@([0-9a-zA-Z][0-9a-zA-Z-]+\.)+[a-zA-Z]{2,6}$", $email);	
}
}
?>

form.php

<?php
require_once $_SERVER['DOCUMENT_ROOT'] . "\classes\Form_Validation.php";

$Form = new Form_Validation;
$Form->Required_Field("name", "text", "please eneter your name)");
$Form->Required_Field("email", "email");
$Form->Validate_Form();
$Form->Display_Errors();

echo <<<HTML

<form action="{$_SERVER['REQUEST_URI']}" name="test" method="POST">
<fieldset>
<legend>Add League</legend>
name: <input type="text" name="name" title="name"/><br />
email : <input type="text" name="email" title="email" /><br />
<input type="submit" value="Add League" title="Submit Form" />
<input type="reset" value="Reset" title="Reset Form" />
</fieldset>
</form>

HTML;


?>

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form validation

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