在PHP中从所有子目录中删除具有文件名的特定文件

Question

Suppose there's a directory in which there are numerous sub-directories. Now how can I scan all the subdirectories to find a file with name, say, abc.php and delete this file wherever its is found.

I tried doing something like this -

$oAllSubDirectories = scandir(getcwd());
foreach ($oAllSubDirectories as $oSubDirectory)
{
  //Delete code here
}

But this code doesn't check directories inside the subdirectories. Any idea how can I do this ?

Answer 1

In general, you put the code inside a function and make it recursive: when it encounters a directory it calls itself in order to process its contents. Something like this:

function processDirectoryTree($path) {
    foreach (scandir($path) as $file) {
        $thisPath = $path.DIRECTORY_SEPARATOR.$file;
        if (is_dir($thisPath) && trim($thisPath, '.') !== '') {
            // it's a directory, call ourself recursively
            processDirectoryTree($thisPath);
        }
        else {
            // it's a file, do whatever you want with it
        }
    }
}

In this particular case you don't need to do that because PHP offers the ready-made RecursiveDirectoryIterator that does this automatically:

$it = new RecursiveIteratorIterator(new RecursiveDirectoryIterator(getcdw()));
while($it->valid()) {
    if ($it->getFilename() == 'abc.php') {
        unlink($it->getPathname());
    }
    $it->next();
}