PHP Formvalidator

This library use to validate and sanitize form entry with sanitization to avoid sql injection and easy to set rules for specific fields.

Install

composer require jasonsarino/form-validator

Requires PHP 7.1 or newer.

Usage

Include Sanitizer and FormValidator Class

// include sanitizer class
require_once 'Sanitizer.php';

// include formvalidator class
require_once 'FormValidator.class.php';

// init class
$form = new FormValidator();

Fetch data from $_POST form

assume that we have data from $_POST data

// Fetch value from post type
$_POST['firstname'] = "Juan";
$_POST['surname'] = "Dela Cruz";
$_POST['age'] = "23";
$_POST['comment'] = "This is test comment's";

Reset data array for multiple form entries

(Optional) Use to reset array to FormValidator class f you have multple form entries

$form->data = array();

Set and Hold $_POST into data array variable

$form->setData($_POST);

Set Rules ro fields

// set rules for First Name 
$form->setRules('firstname','First Name','required|alphaS');

// set rules for Surname                          
$form->setRules('surname','Surname','required|alphaS');   

// set rules for Age                  	
$form->setRules('age','Age','required|num');        

// set rules for Comment             	
$form->setRules('comment'  , 'Comment',   'alphaNumSymbolS');

Validate data array variable with rules

$form->validateData();

Get the result from validateData method

return bolean

$form->isValid();

Display Error

$form->getErrorMessage();

Complete Usage

// include sanitizer class
require_once 'Sanitizer.php';

// include formvalidator class
require_once 'FormValidator.class.php';

// init class
$form = new FormValidator();

// Fetch value from post type
$_POST['firstname'] = "Juan";
$_POST['surname'] = "Dela Cruz";
$_POST['age'] = "23";
$_POST['comment'] = "This is test comment's";
                
/*
 * (Optional)
 * Use to reset array to FormValidator class
 * if you have multple form entries
 */
$form->data = array();  

// Set and Hold data into array                                       
$form->setData($_POST);   

// set rules for First Name 
$form->setRules('firstname','First Name','required|alphaS');

// set rules for Surname                          
$form->setRules('surname','Surname','required|alphaS');   

// set rules for Age                  	
$form->setRules('age','Age','required|num');        

// set rules for Comment             	
$form->setRules('comment'  , 'Comment',   'alphaNumSymbolS');                     	

// Execute and validate data request rules
$form->validateData();		

// Check if valid all rules
if ($form->isValid()) {                 

    // Get sanitized $_POST from validator
    $firstname = $form->dataFields['firstname'];
    $surname = $form->dataFields['surname'];
    $age = $form->dataFields['age'];
    $comment = $form->dataFields['comment'];

    // Display $_POST data
    echo "First Name: " . $firstname . "<br />Surname: " . $surname . "<br />Age: " . $age . "<br />Comment: " . $comment;

} else {
	
    // Display all errors.
    echo  $form->getErrorMessage();
}

Rule Reference

The following is a list of all the native rules that are available to use:

Rule	Parameter	Description	Example
required	No	Returns FALSE if the form element is empty.
alpha	No	Returns FALSE if the form element contains anything other than alphabetical characters.
alphaS	No	Returns FALSE if the form element contains anything other than alpha characters or spaces. Should be used after trim to avoid spaces at the beginning or end.
alphaNum	No	Returns FALSE if the form element contains anything other than alpha-numeric characters.
alphaNumS	No	Returns FALSE if the form element contains anything other than alpha-numeric characters or spaces. Should be used after trim to avoid spaces at the beginning or end.
alphaNumSymbol	No	Returns FALSE if the form element contains anything other than alpha-numeric-symbol characters. Should be used after trim to avoid spaces at the beginning or end.
alphaNumSymbolS	No	Returns FALSE if the form element contains anything other than alpha-numeric-symbol characters or spaces. Should be used after trim to avoid spaces at the beginning or end.
dateFormat	No	Returns FALSE if the form element contains anything other than date format.
dateTimeFormat	No	Returns FALSE if the form element contains anything other than date and time format.
email	No	Returns FALSE if the form element does not contain a valid email address.
ipAddress	No	Returns FALSE if the supplied IP address is not valid. Accepts an optional parameter of ‘ipv4’ or ‘ipv6’ to specify an IP format.
maxLen	Yes	Returns FALSE if the form element is longer than the parameter value.	maxLen[12]
num	No	Returns FALSE if the form element contains anything other than numeric characters.
numS	No	Returns FALSE if the form element contains anything other than numeric and space characters.
float	No	Returns FALSE if the form element contains anything other than a float number.
regxp	Yes	Returns FALSE if the form element not meet a particular regular expression.	regxp[/^[0-9a-zA-Z ]+$/]

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