What are some common mistakes to avoid when using scandir() and foreach loop to rename files in PHP?

One common mistake to avoid when using scandir() and foreach loop to rename files in PHP is not checking for "." and ".." entries in the directory listing. These entries represent the current directory and parent directory, respectively, and should be skipped during file processing. To solve this issue, you can add a condition to exclude these entries from the foreach loop. 

$directory = "/path/to/directory/";

$files = scandir($directory);

foreach ($files as $file) {
    if ($file != "." && $file != "..") {
        $newName = "new_" . $file;
        rename($directory . $file, $directory . $newName);
    }
}

Keywords

scandir foreach loop rename files PHP mistakes

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