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function splitn($string, $needle, $offset) {
    $newString = $string;
    $totalPos = 0;
    $length = strlen($needle);
    for($i = 0; $i < $offset; $i++) {
        $pos = strpos($newString, $needle);

        // If you run out of string before you find all your needles
        if($pos === false)
            return false;
        $newString = substr($newString, $pos+$length);
        $totalPos += $pos+$length;
    }
    return array(substr($string, 0, $totalPos-$length),substr($string, $totalPos));
}