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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.
| Line | Code |
|---|---|
| 7667 | * Filters the amount of storage space used by one directory and all its children, in megabytes. |
| 7668 | * |
| 7669 | * Return the actual used space to short-circuit the recursive PHP file size calculation |
| 7670 | * and use something else, like a CDN API or native operating system tools for better performance. |
| 7671 | * |
| 7672 | * @since 5.6.0 |
| 7673 | * |
| 7674 | * @param int|false $space_used The amount of used space, in bytes. Default false. |
| 7675 | */ |
| 7676 | $size = apply_filters( 'pre_recurse_dirsize', false, $directory, $exclude, $max_execution_time, $directory_cache ); |
| 7677 | |
| 7678 | if ( false === $size ) { |
| 7679 | $size = 0; |
| 7680 | |
| 7681 | $handle = opendir( $directory ); |
| 7682 | if ( $handle ) { |
| 7683 | while ( ( $file = readdir( $handle ) ) !== false ) { |
| 7684 | $path = $directory . '/' . $file; |
| 7685 | if ( '.' !== $file && '..' !== $file ) { |