php-form-validation-class

PHP Class that validates form values

How to Use

Put form fields into an array and state which validation methods to apply.

    $fields = [
        'username' => ['required', 'minlen' => 5, 'maxlen' => 15],
        'email' => ['required', 'email'],
        'password' => ['required', 'minlen' => 8],
        'confirm_password' => ['required', 'match' => 'password'],
        'age' => ['required', 'number'],
    ];

Validation Methods

required

The field is required and must not be empty.

minlen

Sets the minimum acceptable length of the field.

maxlen

Sets the maximum acceptable length of the field.

email

Ensures the field value is an Email Address.

match

Validates that this field matches the same value as the field set in the match value.

number

Ensures the field value is a number.

Instantiate the Class

Create a new object called $validator and use the $_POST array and previously declared $fields array to instantiate it. Set the $errors variable with any errors that may be thrown when validating the form.

$validator = new Validate($_POST, $fields);
$errors = $validator->validateForm();

Show Errors

if (empty($errors)) {
        echo "Form submitted successfully!";
    } else {
        foreach ($errors as $error) {
            echo "<p>$error</p>";
    }
}