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7 years ago
The TRUE recursive map function for working with dirs & files.
You can create, read(find), update(or move) or delete files/dirs/tree by your callable function.
You can use flags for select what content you need.

<?php
var_dump(dirmap($dst, function($v) {
    pre($v);
    return true;
}, 1|2|4|8));

/**
 * Applies the callback to the entries of the given dir path
 * In accordance with the received flags
 * @param  string   $path   path of the working directory
 * @param  Callable $action Callable function that would be
 *     executed for every entry in path
 * @param  integer  $flags  can be the following flag:
 *     1: apply Callable function for files
 *     2: apply Callable function for directories
 *     4: apply Callable function for $path
 *     8: work recursively
 * @return bool bitwise AND of all (bool)$action calls results
 */
function dirmap(string $path, Callable $action, int $flags = 15) {
    $flF = boolval($flags & 1);
    $flD = boolval($flags & 2);
    $flP = boolval($flags & 4);
    $flR = boolval($flags & 8);
    $result = 1;

    if (is_dir($path)) {

        $dir = opendir($path);
        while ($entry = readdir($dir))
            if (!in_array($entry, ['.', '..'])) {
                $fullEntry = "{$path}/{$entry}";

                if ($flR)
                    $result &= dirmap($fullEntry, $action, $flags & 11);

                if ($flF && is_file($fullEntry) || $flD && is_dir($fullEntry))
                    $result &= (bool)call_user_func($action, $fullEntry);
            }

        if ($flP)
            $result &= (bool)call_user_func($action, $fullEntry);

        return (bool)$result;
    } else
        return is_file($path);
}
?>
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