Удалить картинку из jos_content

$db_host = "localhost";
$db_database = "Ваша бд";
$db_username = "Юзер";
$db_pass = "Пароль";
$connection = mysql_connect( $db_host, $db_username, $db_pass );

$db_select = mysql_select_db($db_database);

$chosemenu = 'jos_content';
$query = "SELECT * FROM `$chosemenu` WHERE 1";
$result = mysql_query($query);

$content = array();
while ($result_array = mysql_fetch_array($result)){
$id = $result_array[0];
$content = $result_array[4];
$names_arr = array($id,$content);
$main_array[] = $names_arr;
}
foreach($main_array as $databaseinfo) {
$replasement = '';
$img = ('\<img ваша картинка \/\>');
$contentnew = preg_replace($img, $replasement, $databaseinfo[1]);
$idq = $databaseinfo[0];
$query2 = "UPDATE `$chosemenu` SET `introtext` = '$contentnew' WHERE id = '$idq'";
$result = mysql_query( $query2 );

}

UPDATE jos_content SET `introtext` = replace(introtext,'<img ваша картинка> ','');