php glob – scan in subfolders for a file

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There are 2 ways.

Use glob to do recursive search:

<?php
 
// Does not support flag GLOB_BRACE
function rglob($pattern, $flags = 0) {
    $files = glob($pattern, $flags); 
    foreach (glob(dirname($pattern).'/*', GLOB_ONLYDIR|GLOB_NOSORT) as $dir) {
    $files = array_merge(
        [],
        ...[$files, rglob($dir . "/" . basename($pattern), $flags)]
    );
    return $files;
}

// usage: to find the test.zip file recursively
$result = rglob($_SERVER['DOCUMENT_ROOT'] . '/test.zip');
var_dump($result);
// to find the all files that names ends with test.zip
$result = rglob($_SERVER['DOCUMENT_ROOT'] . '/*test.zip');
?>

Use RecursiveDirectoryIterator

<?php
// $regPattern should be using regular expression
function rsearch($folder, $regPattern) {
    $dir = new RecursiveDirectoryIterator($folder);
    $ite = new RecursiveIteratorIterator($dir);
    $files = new RegexIterator($ite, $regPattern, RegexIterator::GET_MATCH);
    $fileList = array();
    foreach($files as $file) {
        $fileList = array_merge($fileList, $file);
    }
    return $fileList;
}

// usage: to find the test.zip file recursively
$result = rsearch($_SERVER['DOCUMENT_ROOT'], '/.*\/test\.zip/'));
var_dump($result);
?>

RecursiveDirectoryIterator comes with PHP5 while glob is from PHP4. Both can do the job, it’s up to you.

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