unzip_file( string $file, string $to )
Unzips a specified ZIP file to a location on the filesystem via the WordPress Filesystem Abstraction.
Description Description
Assumes that WP_Filesystem() has already been called and set up. Does not extract a root-level __MACOSX directory, if present.
Attempts to increase the PHP memory limit to 256M before uncompressing. However, the most memory required shouldn’t be much larger than the archive itself.
Parameters Parameters
- $file
-
(string) (Required) Full path and filename of ZIP archive.
- $to
-
(string) (Required) Full path on the filesystem to extract archive to.
Return Return
Source Source
File: wp-admin/includes/file.php
function unzip_file( $file, $to ) { global $wp_filesystem; if ( ! $wp_filesystem || ! is_object( $wp_filesystem ) ) { return new WP_Error( 'fs_unavailable', __( 'Could not access filesystem.' ) ); } // Unzip can use a lot of memory, but not this much hopefully. wp_raise_memory_limit( 'admin' ); $needed_dirs = array(); $to = trailingslashit( $to ); // Determine any parent dir's needed (of the upgrade directory) if ( ! $wp_filesystem->is_dir( $to ) ) { //Only do parents if no children exist $path = preg_split( '![/\\\]!', untrailingslashit( $to ) ); for ( $i = count( $path ); $i >= 0; $i-- ) { if ( empty( $path[ $i ] ) ) { continue; } $dir = implode( '/', array_slice( $path, 0, $i + 1 ) ); if ( preg_match( '!^[a-z]:$!i', $dir ) ) { // Skip it if it looks like a Windows Drive letter. continue; } if ( ! $wp_filesystem->is_dir( $dir ) ) { $needed_dirs[] = $dir; } else { break; // A folder exists, therefor, we dont need the check the levels below this } } } /** * Filters whether to use ZipArchive to unzip archives. * * @since 3.0.0 * * @param bool $ziparchive Whether to use ZipArchive. Default true. */ if ( class_exists( 'ZipArchive', false ) && apply_filters( 'unzip_file_use_ziparchive', true ) ) { $result = _unzip_file_ziparchive( $file, $to, $needed_dirs ); if ( true === $result ) { return $result; } elseif ( is_wp_error( $result ) ) { if ( 'incompatible_archive' != $result->get_error_code() ) { return $result; } } } // Fall through to PclZip if ZipArchive is not available, or encountered an error opening the file. return _unzip_file_pclzip( $file, $to, $needed_dirs ); }
Expand full source code Collapse full source code View on Trac
Changelog Changelog
Version | Description |
---|---|
2.5.0 | Introduced. |
User Contributed Notes User Contributed Notes
You must log in before being able to contribute a note or feedback.
Example
Basic example showing how to unzip the contents of a .zip file, that resides in the WordPress upload directory, to the same destination.