Online PHP editor | rfc for jPCSd

@ 2016-11-05T12:34:37Z

<?php

class Entity extends PDO {
    public function __construct() { try {
        parent::__construct('mysql:host=localhost;dbname=X', 'db_user', 'db_pass');
        parent::setAttributes(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    } catch(PDOException $e) { die($e->getMessage()); }}
}

class DataSource {
    public static function simple_select($sql, array $values) {
        $smpt = (new Entity)->Prepare($sql);
        $smpt->execute($values);
        return $smpt->fetchAll();
    }
}

class UniqueString {
    
    private $Secret;
    public function __construct($secret) {
        $this->Secret = $secret;
    }
    
    public function fetch() {
        return $this->Secret;
    }
    
}

class Generate {
    private static $Secret;
    private static $Sql = 'SELECT user_id FROM users WHERE salt = ?';
    public static function randomString(int $len) { do {
            self::$Secret = mcrypt_create_iv($len, MCRYPT_DEV_URANDOM);
        } while (!empty(DataSource::simple_select(self::$Sql, [self::$Secret])['user_id']));
        return new UniqueString(self::$Secret);
    }
}

echo Generate::randomString(16)->fetch();

Output for git.master, git.master_jit, rfc.property-hooks: Fatal error: Uncaught Error: Call to undefined function mcrypt_create_iv() in /in/jPCSd:35 Stack trace: #0 /in/jPCSd(41): Generate::randomString(16) #1 {main} thrown in /in/jPCSd on line 35
Process exited with code 255.

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