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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 1758 | * |
| 1759 | * @since 6.4.0 |
| 1760 | * |
| 1761 | * @param null|true|WP_Error $result The result of the override. True on success, otherwise WP Error. Default null. |
| 1762 | * @param string $file Full path and filename of ZIP archive. |
| 1763 | * @param string $to Full path on the filesystem to extract archive to. |
| 1764 | * @param string[] $needed_dirs A full list of required folders that need to be created. |
| 1765 | * @param float $required_space The space required to unzip the file and copy its contents, with a 10% buffer. |
| 1766 | */ |
| 1767 | $pre = apply_filters( 'pre_unzip_file', null, $file, $to, $needed_dirs, $required_space ); |
| 1768 | |
| 1769 | if ( null !== $pre ) { |
| 1770 | // Ensure the ZIP file archive has been closed. |
| 1771 | $z->close(); |
| 1772 | |
| 1773 | return $pre; |
| 1774 | } |
| 1775 | |
| 1776 | for ( $i = 0; $i < $z->numFiles; $i++ ) { |
| Line | Code |
| 1929 | // Create those directories if need be: |
| 1930 | foreach ( $needed_dirs as $_dir ) { |
| 1931 | // Only check to see if the dir exists upon creation failure. Less I/O this way. |
| 1932 | if ( ! $wp_filesystem->mkdir( $_dir, FS_CHMOD_DIR ) && ! $wp_filesystem->is_dir( $_dir ) ) { |
| 1933 | return new WP_Error( 'mkdir_failed_pclzip', __( 'Could not create directory.' ), $_dir ); |
| 1934 | } |
| 1935 | } |
| 1936 | |
| 1937 | /** This filter is documented in src/wp-admin/includes/file.php */ |
| 1938 | $pre = apply_filters( 'pre_unzip_file', null, $file, $to, $needed_dirs, $required_space ); |
| 1939 | |
| 1940 | if ( null !== $pre ) { |
| 1941 | return $pre; |
| 1942 | } |
| 1943 | |
| 1944 | // Extract the files from the zip. |
| 1945 | foreach ( $archive_files as $file ) { |
| 1946 | if ( $file['folder'] ) { |
| 1947 | continue; |