PHP code example of crtl / validation

1. Go to this page and download the library: Download crtl/validation library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php.

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

crtl / validation example snippets


use Crtl\Validation\Custom\Rule as CustomRule;

   "ruleName" => ["fieldName1", ..., "fieldNameN"],
    "ruleName" => ["fieldName" => "configValue"],
    "ruleName" => ["fieldName" => ["config1", "config"]],
    CustomRule::class => ["fieldName", ...]
]);


if (!$validator->validate($data)) {
    $errors = $validator->getErrors();
}



class UniqueDbColumnRule implements \Crtl\Validation\RuleInterface {

    protected $connection;
    protected $table;
    protected $column;

    public function __construct(array $config) {
        $this->connection = $config[0] ?? null;
        $this->table = $config[0] ?? null;
        $this->column = $config[0] ?? null;
    }
    
    public function getName() {
        return self::class;
    }
    
    public function validate($value): bool {
        $stmt = $this->db->prepare(
            sprintf("SELECT %$2s FROM %$s WHERE %$2s=? LIMIT 1;", $this->table, $this->column)
        );
        
        $stmt->bindValue(1, $value);
        $stmt->execute();
        return $stmt->rowCount() === 0;
    }

}

$validator = new Crtl\Validation\Validator([
    UniqueDbColumnRule::class => [
        "username" => [$db, "users", "username"],
        "email" => [$db, "users", "email"]
    ]
]);

$validator->validate($data);