recurse_dirsize()
最后更新于:2021-11-27 20:57:48
recurse_dirsize( string$directory, string|array$exclude=null, int$max_execution_time=null, array$directory_cache=null)Get the size of a directory recursively.
参数
- $directory
-
(string) (Required) Full path of a directory.
- $exclude
-
(string|array) (Optional) Full path of a subdirectory to exclude from the total, or array of paths. Expected without trailing slash(es).
Default value: null
- $max_execution_time
-
(int) (Optional) Maximum time to run before giving up. In seconds. The timeout is global and is measured from the moment GeChiUI started to load.
Default value: null
- $directory_cache
-
(array) (Optional) Array of cached directory paths.
Default value: null
响应
(int|false|null) Size in bytes if a valid directory. False if not. Null if timeout.
源文件
文件: gc-includes/functions.php
function recurse_dirsize( $directory, $exclude = null, $max_execution_time = null, &$directory_cache = null ) {
$directory = untrailingslashit( $directory );
$save_cache = false;
if ( ! isset( $directory_cache ) ) {
$directory_cache = get_transient( 'dirsize_cache' );
$save_cache = true;
}
if ( isset( $directory_cache[ $directory ] ) && is_int( $directory_cache[ $directory ] ) ) {
return $directory_cache[ $directory ];
}
if ( ! file_exists( $directory ) || ! is_dir( $directory ) || ! is_readable( $directory ) ) {
return false;
}
if (
( is_string( $exclude ) && $directory === $exclude ) ||
( is_array( $exclude ) && in_array( $directory, $exclude, true ) )
) {
return false;
}
if ( null === $max_execution_time ) {
// Keep the previous behavior but attempt to prevent fatal errors from timeout if possible.
if ( function_exists( 'ini_get' ) ) {
$max_execution_time = ini_get( 'max_execution_time' );
} else {
// Disable...
$max_execution_time = 0;
}
// Leave 1 second "buffer" for other operations if $max_execution_time has reasonable value.
if ( $max_execution_time > 10 ) {
$max_execution_time -= 1;
}
}
/**
* Filters the amount of storage space used by one directory and all its children, in megabytes.
*
* 响应 the actual used space to short-circuit the recursive PHP file size calculation
* and use something else, like a CDN API or native operating system tools for better performance.
*
* @since 5.6.0
*
* @param int|false $space_used The amount of used space, in bytes. Default false.
*/
$size = apply_filters( 'pre_recurse_dirsize', false, $directory, $exclude, $max_execution_time, $directory_cache );
if ( false === $size ) {
$size = 0;
$handle = opendir( $directory );
if ( $handle ) {
while ( ( $file = readdir( $handle ) ) !== false ) {
$path = $directory . '/' . $file;
if ( '.' !== $file && '..' !== $file ) {
if ( is_file( $path ) ) {
$size += filesize( $path );
} elseif ( is_dir( $path ) ) {
$handlesize = recurse_dirsize( $path, $exclude, $max_execution_time, $directory_cache );
if ( $handlesize > 0 ) {
$size += $handlesize;
}
}
if ( $max_execution_time > 0 && microtime( true ) - GC_START_TIMESTAMP > $max_execution_time ) {
// Time exceeded. Give up instead of risking a fatal timeout.
$size = null;
break;
}
}
}
closedir( $handle );
}
}
$directory_cache[ $directory ] = $size;
// Only write the transient on the top level call and not on recursive calls.
if ( $save_cache ) {
set_transient( 'dirsize_cache', $directory_cache );
}
return $size;
}