- preg_replace: documentation ( source)
<?php
$body = "something
use Modules\Cms\Classes\Content;
use Modules\Cms\Classes\Theme;
use Modules\System\Classes\ApplicationException;
use Modules\Cms\Classes\Router;
class ...
";
echo chr(92);
$namespaces = array();
//preg_match_all('/(use\s+[a-z0-9_\\\]+;\n?)/mi', $body, $namespaces);
echo preg_replace('/(use\s+[a-z0-9_\\\]+;\n+)/mi', '', $body);
//print_r($namespaces);