list_files( string $folder = '', int $levels = 100, string[] $exclusions = array() )

Returns a listing of all files in the specified folder and all subdirectories up to 100 levels deep.


Description Description

The depth of the recursiveness can be controlled by the $levels param.


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Parameters Parameters

$folder

(string) (Optional) Full path to folder.

Default value: ''

$levels

(int) (Optional) Levels of folders to follow, Default 100 (PHP Loop limit).

Default value: 100

$exclusions

(string[]) (Optional) List of folders and files to skip.

Default value: array()


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Return Return

(string[]|false) Array of files on success, false on failure.


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Source Source

File: wp-admin/includes/file.php

function list_files( $folder = '', $levels = 100, $exclusions = array() ) {
	if ( empty( $folder ) ) {
		return false;
	}

	$folder = trailingslashit( $folder );

	if ( ! $levels ) {
		return false;
	}

	$files = array();

	$dir = @opendir( $folder );

	if ( $dir ) {
		while ( ( $file = readdir( $dir ) ) !== false ) {
			// Skip current and parent folder links.
			if ( in_array( $file, array( '.', '..' ), true ) ) {
				continue;
			}

			// Skip hidden and excluded files.
			if ( '.' === $file[0] || in_array( $file, $exclusions, true ) ) {
				continue;
			}

			if ( is_dir( $folder . $file ) ) {
				$files2 = list_files( $folder . $file, $levels - 1 );
				if ( $files2 ) {
					$files = array_merge( $files, $files2 );
				} else {
					$files[] = $folder . $file . '/';
				}
			} else {
				$files[] = $folder . $file;
			}
		}

		closedir( $dir );
	}

	return $files;
}


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Changelog Changelog

Changelog
Version Description
4.9.0 Added the $exclusions parameter.
2.6.0 Introduced.

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User Contributed Notes User Contributed Notes

  1. Skip to note 1 content
    Contributed by saran

    Example for listing all files in the upload directory

    $upload_dir = wp_upload_dir();
    $folder = $upload_dir['basedir']
    $files = list_files( $folder, 2 );
    foreach ( $files as $file ) {
    	if ( is_file( $file ) ) {
    		$filesize = size_format( filesize( $file ) );
    		$filename = basename( $file ); 
    	}
    	echo esc_html( $filename . "-" . $filesize );
    }

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