muhammadsiyab / form_validation
PHP Form Validation Library
This package is auto-updated.
Last update: 2025-06-25 23:35:09 UTC
README
Performs Server-Side validation of HTML Forms
Downloading and implementation
- Download the zip file manually and include in your project directory
OR (Using Composer)
run commandcomposer require muhammadsiyab/form_validation
- Include Form_Validation library
require_once './vendor/autoload.php';
Validating form
<?php // Instantiate `Form_Validation` Class $form_validation = new \FormValidation\Form_Validation(); // Array containing custom messages // (Optional parameter, if not passed, default error messages will be used) $messages = array( 'required' => '{field} is cumpolsary', 'max_length' => '{field} must be in limit of {limit}', 'min_length' => '{field} must be at least of {limit} characters', 'regex' => '{field} must be in specific pattern' ); // Validation rules $form_validation->validate(array('field_name', 'field_label', 'required|>10|<3', $messages)); // Check whether a record exists in database $form_validation->exists('field_name|field_label', 'localhost|user|password|db_name', 'table_name|column_name', 'custom_error'); // Check if ($form_validation->is_form_ok() === false) { // Custom error markup $form_validation->set_error_markup('<li>', '</li>'); // Showing validation errors $errors = $form_validation->show_validation_errors(); for ($i = 0; $i < count($errors); $i++) { echo $errors[$i]; } } else { // Do something here }
Available methods
1. validate
Validates the form using specified rules
Parameters:
array
$config Array that contains validation configurationExample
array('field_name', 'field_label', 'validation_rules_separated_with_pipe', array_containing_custom_messages)
2. exists
Checks whether a value already exists in database
Parameters:
-
string
$field Data related with field e.g name & labelExample
'field_name|field_label'
-
string
$db Database connection details e.g host, user, password & database nameExample
'localhost|user|password|db_name'
-
string
$table Data related with table e.g table name & column nameExample
'table_name|column_name'
-
string
$error (Optional) Custom error to show
3. set_error_markup
Sets custom markup for validation errors
-
string
$opening_markup String containing opening markupExample
'<span style="color: red">'
-
string
$closing_markup String containing closing markupExample
'</span>'
4. show_validation_errors
@return type Array
(Use for loop to iterate through errors)
Shows validation errors
5. is_form_ok
Checks whether validation is done with errors or not
Available validation rules
Rule | Description | Syntax |
---|---|---|
required | Checks if a field is empty | required |
numeric | Checks if a field is not a number | numeric |
Checks if email is invalid | email |
|
url | Checks if url is invalid | url |
ip | Checks if IP address is invalid | ip |
min_length | Sets the minimum length of field | <6 |
max_length | Sets the maximum length of field | >10 |
regex | Performs regular expression for the field | matches/^[a-zA-Z0-9]/ |