src/System.php
function mktemp($args = null)
    {
        static $first_time = true;
        $opts = System::_parseArgs($args, 't:d');
        if (PEAR::isError($opts)) {
            return System::raiseError($opts);
        }

        foreach ($opts[0] as $opt) {
            if ($opt[0] == 'd') {
                $tmp_is_dir = true;
            } elseif ($opt[0] == 't') {
                $tmpdir = $opt[1];
            }
        }

        $prefix = (isset($opts[1][0])) ? $opts[1][0] : 'tmp';
        if (!isset($tmpdir)) {
            $tmpdir = System::tmpdir();
        }

        if (!System::mkDir(array('-p', $tmpdir))) {
            return false;
        }

        $tmp = tempnam($tmpdir, $prefix);
        if (isset($tmp_is_dir)) {
            unlink($tmp); // be careful possible race condition here
            if (!mkdir($tmp, 0700)) {
                return System::raiseError("Unable to create temporary directory $tmpdir");
            }
        }

        $GLOBALS['_System_temp_files'][] = $tmp;
        if (isset($tmp_is_dir)) {
            //$GLOBALS['_System_temp_files'][] = dirname($tmp);
        }

        if ($first_time) {
            PEAR::registerShutdownFunc(array('System', '_removeTmpFiles'));
            $first_time = false;
        }

        return $tmp;
    }
function mktemp($args = null)
    {
        static $first_time = true;
        $opts = System::_parseArgs($args, 't:d');
        if (PEAR::isError($opts)) {
            return System::raiseError($opts);
        }

        foreach ($opts[0] as $opt) {
            if ($opt[0] == 'd') {
                $tmp_is_dir = true;
            } elseif ($opt[0] == 't') {
                $tmpdir = $opt[1];
            }
        }

        $prefix = (isset($opts[1][0])) ? $opts[1][0] : 'tmp';
        if (!isset($tmpdir)) {
            $tmpdir = System::tmpdir();
        }

        if (!System::mkDir(array('-p', $tmpdir))) {
            return false;
        }

        $tmp = tempnam($tmpdir, $prefix);
        if (isset($tmp_is_dir)) {
            unlink($tmp); // be careful possible race condition here
            if (!mkdir($tmp, 0700)) {
                return System::raiseError("Unable to create temporary directory $tmpdir");
            }
        }

        $GLOBALS['_System_temp_files'][] = $tmp;
        if (isset($tmp_is_dir)) {
            //$GLOBALS['_System_temp_files'][] = dirname($tmp);
        }

        if ($first_time) {
            PEAR::registerShutdownFunc(array('System', '_removeTmpFiles'));
            $first_time = false;
        }

        return $tmp;
    }
Creates temporary files or directories. This function will remove
the created files when the scripts finish its execution.

Usage:
1) $tempfile = System::mktemp("prefix");
2) $tempdir  = System::mktemp("-d prefix");
3) $tempfile = System::mktemp();
4) $tempfile = System::mktemp("-t /var/tmp prefix");

prefix -> The string that will be prepended to the temp name
(defaults to "tmp").
-d     -> A temporary dir will be created instead of a file.
-t     -> The target dir where the temporary (file|dir) will be created. If
this param is missing by default the env vars TMP on Windows or
TMPDIR in Unix will be used. If these vars are also missing
c:\windows\temp or /tmp will be used.

@param   string  $args  The arguments
@return  mixed   the full path of the created (file|dir) or false
@see System::tmpdir()
@static
@access  public