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@ 2014-02-03T10:48:58Z

<?php
function realPath2($path)
    {
        $isUnixPath = ((strlen($path) === 0) || ($path[0] !== '/'));

        // Checks if path is relative.
        if ((strpos($path, ':') === false) && ($isUnixPath === true)) {
            $path = getcwd() . DIRECTORY_SEPARATOR . $path;
        }

        // Resolve path parts (single dot, double dot and double delimiters).
        $path = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $path);
        $parts = array_filter(explode(DIRECTORY_SEPARATOR, $path), 'strlen');
        $absolutes = array();
        foreach ($parts as $part) {
            if (('.' === $part) || ('' === $part)) {
                continue;
            }
            if ('..' === $part) {
                array_pop($absolutes);
            } else {
                $absolutes[] = $part;
            }
        }
        $path = implode(DIRECTORY_SEPARATOR, $absolutes);

        // Resolve any symlinks.
        if ((file_exists($path) === true) && (linkinfo($path) > 0)) {
            $path = readlink($path);
        }

        if ($isUnixPath === false) {
            $path = '/' . $path;
        }

        return $path;
    }

echo realPath2('phar://test.phar/a/b/./.././v/../file.txt');

Output for 7.1.26 - 7.1.33, 7.2.17 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: Warning: file_exists(): open_basedir restriction in effect. File(phar:/test.phar/a/file.txt) is not within the allowed path(s): (/tmp:/in:/etc) in /in/ra9YY on line 28 phar:/test.phar/a/file.txt
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.3.32 - 7.3.33, 7.4.26, 7.4.33, 8.0.13: phar:/test.phar/a/file.txt
Output for 7.1.20, 7.2.6: Warning: file_exists(): open_basedir restriction in effect. File(phar:/test.phar/a/file.txt) is not within the allowed path(s): (/tmp:/in) in /in/ra9YY on line 28 phar:/test.phar/a/file.txt

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