Create mysql DB from php with prepared queries

my problem is that I'm trying to create a DB from php, with queries prepared, but mysql gives me an error.

The PHP code is:

private static $sql = array(

    'create database :nombreBD default character set utf8 collate utf8_unicode_ci;',
    'create user :usuario identified by :clave;',
    'grant all on :nombreBD.* to :usuario;',
    'flush privileges;',
    'use :nombreBD;'
);

static function createScheme(MySql $mysql, $database, $user, $password) {

    $arrayParametros = array(
        0 => array('nombreBD' => htmlentities($database, ENT_NOQUOTES, 'UTF-8')),            
        1 => array('usuario' => $user,
                   'clave' => $password),
        2 => array('nombreBD' => htmlentities($database, ENT_NOQUOTES, 'UTF-8'), 
                    'usuario' => $user),
        4 => array('nombreBD' => htmlentities($database, ENT_NOQUOTES, 'UTF-8'))  
    );

    foreach (self::$sql as $indice => $sentencia) {
        $parametros = array();
        if(isset($arrayParametros[$indice])) {
            $parametros = $arrayParametros[$indice];
        } 
        $mysql->execute($sentencia, $parametros);
    }
}

But at the time it gives me the following errors:

  

create database: DB name default character set utf8 collate utf8_unicode_ci;
  array (
   'nameBD' = > 'Base Data',
  )
  array (
   0 = > '42000',
   1 = > 1064,
   2 = > 'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near \ '\' Albayda \ 'default character set utf8 collate utf8_unicode_ci \' at line 1 ',
  )

The problem is that when in phpMyAdmin I enter the command by mysql, if we put quotes it gives error.

How can I do it?