note 98028 deleted from function.array-slice by danbrown

Note Submitter: benoit dot montuelle at gmail dot com 

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Updated version of narray_slice function below, syntax-compatible with php 4 and php 5  servers.

It also works for text-index arrays

function narray_slice($array, $offset, $length, $preserve_keys = false) {

    //Check if this version already supports it
    if (version_compare(PHP_VERSION, '5.0.2', '>=')){
      return array_slice($array, $offset, $length, $preserve_keys);
    }
    else if ($preserve_keys == false) {
      return array_slice($array, $offset, $length);
    }

    $a = 0;
    foreach ($array as $key => $value) {

        if ($a >= $offset && $a - $offset < $length)
            $output_array[$key] = $value;
        $a++;

    }

    return $output_array;
}