| sinisake |
26. 01. 2013. 23:42 |
Jos jedna php klasica za validaciju forme
Ima bolje i pametnije napisanih i sveobuhvatnijih, ali evo... mozda cak nekome i posluzi, za neke skromnije potrebe... :D
PHP kôd:
class Form_validator
{
var $errors='';
var $output='';
public function __construct()
{
foreach($_POST as $key=>$value) {
$_SESSION[$key]=$value;
}
}
public function validate($vars)
{
for($i=0;$i<count($vars);$i++)
{
$title=$vars[$i][0];
$rules=$vars[$i][1];
$var=$vars[$i][2];
//check rules
//required field
if(strpos($rules,'req')!==FALSE)
{
if(empty($var))
$this->errors.= $title. ' is required field!<br />';
}
//only text is allowed
if(strpos($rules,'text')!==FALSE)
{
if(preg_match('%[^A-Za-z ]%',$var))
$this->errors.= $title. ' field should contain only letters!<br />';
}
//only letters & numbers are allowed
if(strpos($rules,'alpha_digit')!==FALSE)
{
if(preg_match('%[^A-Za-z0-9 ]%',$var))
$this->errors.= $title. ' field should contain only letters and/or numbers!<br />';
}
//valid email
if(strpos($rules,'valid_email')!==FALSE)
{
if(!filter_var($var, FILTER_VALIDATE_EMAIL))
{
$this->errors.= $title. ' is not a valid email address!<br />';
}
}
//only numeric chars
if(strpos($rules,'num')!==FALSE)
{
if(preg_match('%[^0-9. ]%',$var))
$this->errors.= $title. ' field should contain only numbers!<br />';
}
//minimal chars
if(strpos($rules,'min=')!==FALSE)
{
if(preg_match('%min=[0-9]{1,10}%',$rules,$match))
{
$numb=str_replace('min=','',$match[0]);
}
if(!empty($var))
if(strlen($var)<$numb)
$this->errors.= $title. " should have at least $numb characters!<br />";
}
//max chars
if(strpos($rules,'max=')!==FALSE)
{
if(preg_match('%max=[0-9]{1,10}%',$rules,$match))
{
$numb=str_replace('max=','',$match[0]);
}
if(!empty($var))
if(strlen($var)>$numb)
$this->errors.= $title. " should have at most $numb characters!<br />";
}
//check single checkbox
if(strpos($rules,'type:check_single')!==FALSE)
{
if(preg_match('%value:[0-9A-Za-z]{1,20}%',$rules,$match))
{
$value=str_replace('value:','',$match[0]);
}
if(!empty($var))
if($var!=$value)
$this->errors.= $title. " wrong entry!<br />";
}
//check checkbox group/multiple checkboxes
if(strpos($rules,'type:check_multi')!==FALSE)
{
if(preg_match('%values:[()0-9A-Za-z,]{1,200}%',$rules,$match))
{
$replace=array('values:','(',')');
$values=str_replace($replace,'',$match[0]);
$values_array=explode(',',$values);
}
if(!empty($var))
foreach ($var as $val) {
if(!in_array($val,$values_array))
$this->errors.= $title. " wrong entry!<br />";
}
}
//check radio buttons group
if(strpos($rules,'type:radio')!==FALSE)
{
if(preg_match('%values:[()0-9A-Za-z,]{1,200}%',$rules,$match))
{
$replace=array('values:','(',')');
$values=str_replace($replace,'',$match[0]);
$values_array=explode(',',$values);
}
if(!empty($var))
if(!in_array($var,$values_array))
$this->errors.= $title. " wrong entry!<br />";
}
//only numeric chars
if(strpos($rules,'custom')!==FALSE)
{
if(preg_match('%\[.+\]%',$rules,$match)) {
$rule=$match[0];
}
if(preg_match("%".$rule."%",$var))
$this->errors.= $title. " contains disallowed char(s)!<br />";
}
if(!is_array($var)) {
$this->output.=$title. ' : '. $var. '<br />';
}
else
{
$this->output.=$title. ' : '. implode(',',$var). '<br />';
}
}
if($this->errors!='')
{
return false;
}
else
{
return true;
}
}
}
Upotreba:
PHP kôd:
<?php
error_reporting(0);
session_start();
include('form_validator.php');
$validator= new Form_validator;
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
<body>
<form action="" method="post">
Please enter your name: <br />
<input name="name" type="text" value="<?php echo $_SESSION['name']; ?>" />
<br />
Please enter your email: <br />
<input name="email" type="text" value="<?php echo $_SESSION['email']; ?>" />
<br />
Please enter some number: <br />
<input name="number" type="text" value="<?php echo $_SESSION['number']; ?>" />
<br />
I agree with terms and conditions:
<input name="terms" type="checkbox" value="1" <?php if($_SESSION['terms']=='1') echo 'checked' ?> />
<br />
Vehicle:<br />
<input type="checkbox" name="vehicle[]" value="Bike" <?php if(in_array('Bike',$_SESSION['vehicle'])) echo 'checked'; ?> >I have a bike<br>
<input type="checkbox" name="vehicle[]" value="Car" <?php if(in_array('Car',$_SESSION['vehicle'])) echo 'checked'; ?> >I have a car<br>
<input type="checkbox" name="vehicle[]" value="Plane"<?php if(in_array('Plane',$_SESSION['vehicle'])) echo 'checked'; ?> >I have a plane<br>
<br />
Gender:<br />
<input type="radio" name="gender" value="male" <?php if($_SESSION['gender']=='male') echo 'checked' ?> >Male<br />
<input type="radio" name="gender" value="female"<?php if($_SESSION['gender']=='female') echo 'checked' ?> >Female<br />
<br />
How did you hear about us: <br />
<select name="how">
<option value="0">Please select one option</option>
<option value="Google">Google</option>
<option value="Radio">Radio</option>
<option value="TV">TV</option>
<option value="Other">Other</option>
</select>
<br />
Numbers and text:<br />
<input name="numbtext" type="text" value="<?php echo $_SESSION['numbtext']; ?>" />
<br />
Message:<br />
<textarea name="message" cols="" rows="" style="width:250px;height:130px;"><?php echo $_SESSION['message']; ?></textarea>
<br /><br />
<input name="submit" type="submit" value="Submit" />
</form>
<?php
if(isset($_POST['submit']))
{
// Set variable description titles (used for error messages), names, and validation rules + type of fields (checkboxes and radio buttons).
/*
req=required field
text=only letters are allowed
min = minimal number of characters
max = maximal number of characters
valid_email = obviously... :)
num = only numeric chars
alpha_digit = numbers&letters allowed
custom = format:[^your custom list of allowed characters in field]
types:
check_single - single check box
check_multi - checkbox group
radio - radio buttons group
//rules for check box -> check_single -> one checkbox, value:-> check for exact value! check_multi -> checkbox group values:-> check for exact values!
*/
$vars = array
(
array("Name", 'req|text|min=6|max=20' , $_POST['name']),
array("Email", 'valid_email' , $_POST['email']),
array("Test Number", 'req|num|max=4' , $_POST['number']),
//single checkbox setup -> additional fields: type, checked value
array("Terms and Conditions", 'req|type:check_single|value:1' , $_POST['terms']),
//single checkbox setup -> additional fields in rules section: type, multiple checkboxes, checked values
array("Vehicle", 'req|type:check_multi|values:(Bike,Car,Plane)' , $_POST['vehicle']),
// Radio button group setup -> additional fields in rules section: type, checked values
array("Gender", 'req|type:radio|values:(male,female)' , $_POST['gender']),
// select dropdown setup
array("How did you hear about us", 'req' , $_POST['how']),
//letters and text validation
array("Numbers and text", 'req|alpha_digit' , $_POST['numbtext']),
//custom regex setup -> add custom ALLOWED characters, if variable contains any other chars - validation will fail -> format: [^custom chars]
array("Message", 'req|custom[^A-Za-z0-9-,.\r\n!?= ]' , $_POST['message'])
);
//if validation fails print error messages
if(!$validator->validate($vars))
{
echo $validator->errors;
}
//else send mail, or whatever...
else
{
echo 'Validation passed!<br />';
echo $validator->output;
}
}
?>
</body>
</html>
Naravno, ovo je vise vezbica, kritike samog koncepta i razrade su dobrodosle. :D |
