note 96490 deleted from function.readdir by peehaa

Note Submitter: gherson at snet dot net ---- readdir_recursive() is a recursive readdir() that returns filespecs not filenames. <?php define('SEEK', 'the grail'); define('ORIGIN', "C:\\Documents and Settings\\myname\\My Documents"); $hits = array(); $handles = array(ORIGIN=>opendir(ORIGIN)); // Associate handle with its (absolute) path. ////\\\\ "$handles" is special to // \\\\\\\\\//////// while ($filespec = readdir_recursive($handles)) { $out = array(); $cmd = "c:\\cygwin\\bin\\strings '$filespec' | c:\\cygwin\\bin\\grep -li ".SEEK; $lastLine = exec($cmd, $out, $status); // echo "out is ". implode(' ', $out) .", lastLine is $lastLine, status is $status\n"; if (strstr(' '. implode(' ', $out), '(standard input)')) { // Hit. $hits[] = $filespec; } } echo "'".SEEK."' found in files: <br/>\n". implode("<br/>\n", $hits); /** * Return unique filespecs under given directory tree until all found. * * To use: while ($filespec = readdir_recursive(array($dir="\\path\\to\\folder" => opendir($dir)))) { ... * * @param mixed $seed Array(<path>=><resource>) on 1st call | false during recursion. * @return mixed $filespec String | false */ function readdir_recursive($seed = false) { global $handles; // ("global" instead of "static" because with latter, // assignments go out of scope when function executions end (via return $filespec;).) // $seed is only true (ie, includes a directory path specified by the user) // when readdir_recursive() is executing for the 1st time. if ($seed) { $handles = $seed; } assert('is_array($handles)'); if (empty($handles)) { return false; // All done. } // Advance the current($handles) handle to a new file or folder. $file = readdir(current($handles)); $filespec = key($handles) ."\\". $file; if (false===$file) { // End of current($handles) directory reached. // The current element, an exhausted handle, is the last element. array_pop($handles); // Discard exhausted handle. (This also sets array pointer to array beginning.) end($handles); // echo "\nUp to element ". key($handles) .'=>'. current($handles) ."\n"; return readdir_recursive(); // Resume finding files in a higher level directory. } elseif (is_file($filespec)) { return $filespec; } else { // $file is a directory: Recurse. if ($file!=='.' && $file!=='..') { // Non-pointer directory reached. // Add this subdirectory to the list that must be traversed. $handles[$filespec] = opendir($filespec); next($handles); // Prepare to proceed to the appended subdirectory. } return readdir_recursive(); } }