WordPress at a glance
function is not described

wp_cache_rebuild_or_delete() WPSCache 1.0

No Hooks.

Return

Null. Nothing.

Usage

wp_cache_rebuild_or_delete( $file );

Code of wp_cache_rebuild_or_delete() WPSCache 1.7.1

<?php
function wp_cache_rebuild_or_delete( $file ) {
	global $cache_rebuild_files, $cache_path, $file_prefix;


	if ( strpos( $file, '?' ) !== false )
		$file = substr( $file, 0, strpos( $file, '?' ) );

	$file = wpsc_get_realpath( $file );

	if ( ! $file ) {
		wp_cache_debug( "wp_cache_rebuild_or_delete: file doesn't exist" );
		return false;
	}

	if ( ! wpsc_is_in_cache_directory( $file ) ) {
		wp_cache_debug( "rebuild_or_gc quitting because file is not in cache_path: $file" );
		return false;
	}

	$protected = wpsc_get_protected_directories();
	foreach( $protected as $id => $directory ) {
		$protected[ $id ] = wpsc_get_realpath( $directory );
	}

	if ( in_array( $file, $protected ) ) {
		wp_cache_debug( "rebuild_or_gc: file is protected: $file" );
		return false;
	}

	if ( substr( basename( $file ), 0, mb_strlen( $file_prefix ) ) == $file_prefix ) {
		@unlink( $file );
		wp_cache_debug( "rebuild_or_gc: deleted non-anonymous file: $file" );
		return false;
	}

	if ( substr( basename( $file ), 0, 5 + mb_strlen( $file_prefix ) ) == 'meta-' . $file_prefix ) {
		@unlink( $file );
		wp_cache_debug( "rebuild_or_gc: deleted meta file: $file" );
		return false;
	}

	if ( false == @file_exists( $file ) ) {
		wp_cache_debug( "rebuild_or_gc: file has disappeared: $file" );
		return false;
	}
	if( $cache_rebuild_files && substr( $file, -14 ) != '.needs-rebuild' ) {
		if( @rename($file, $file . '.needs-rebuild') ) {
			@touch( $file . '.needs-rebuild' );
			wp_cache_debug( "rebuild_or_gc: rename file to {$file}.needs-rebuild", 2 );
		} else {
			@unlink( $file );
			wp_cache_debug( "rebuild_or_gc: rename failed. deleted $file", 2 );
		}
	} else {
		$mtime = @filemtime( $file );
		if ( $mtime && ( time() - $mtime ) > 10 ) {
			@unlink( $file );
			wp_cache_debug( "rebuild_or_gc: rebuild file found. deleted because it was too old: $file", 2 );
		}
	}
}