php/WP_CLI/FileCache.php
public function clean() {
		if ( ! $this->enabled ) {
			return false;
		}

		$ttl      = $this->ttl;
		$max_size = $this->max_size;

		// unlink expired files
		if ( $ttl > 0 ) {
			try {
				$expire = new \DateTime();
			} catch ( \Exception $e ) {
				\WP_CLI::error( $e->getMessage() );
			}
			$expire->modify( '-' . $ttl . ' seconds' );

			$finder = $this->get_finder()->date( 'until ' . $expire->format( 'Y-m-d H:i:s' ) );
			foreach ( $finder as $file ) {
				unlink( $file->getRealPath() );
			}
		}

		// unlink older files if max cache size is exceeded
		if ( $max_size > 0 ) {
			$files = array_reverse( iterator_to_array( $this->get_finder()->sortByAccessedTime()->getIterator() ) );
			$total = 0;

			foreach ( $files as $file ) {
				if ( ( $total + $file->getSize() ) <= $max_size ) {
					$total += $file->getSize();
				} else {
					unlink( $file->getRealPath() );
				}
			}
		}

		return true;
	}
public function clean() {
		if ( ! $this->enabled ) {
			return false;
		}

		$ttl      = $this->ttl;
		$max_size = $this->max_size;

		// unlink expired files
		if ( $ttl > 0 ) {
			try {
				$expire = new \DateTime();
			} catch ( \Exception $e ) {
				\WP_CLI::error( $e->getMessage() );
			}
			$expire->modify( '-' . $ttl . ' seconds' );

			$finder = $this->get_finder()->date( 'until ' . $expire->format( 'Y-m-d H:i:s' ) );
			foreach ( $finder as $file ) {
				unlink( $file->getRealPath() );
			}
		}

		// unlink older files if max cache size is exceeded
		if ( $max_size > 0 ) {
			$files = array_reverse( iterator_to_array( $this->get_finder()->sortByAccessedTime()->getIterator() ) );
			$total = 0;

			foreach ( $files as $file ) {
				if ( ( $total + $file->getSize() ) <= $max_size ) {
					$total += $file->getSize();
				} else {
					unlink( $file->getRealPath() );
				}
			}
		}

		return true;
	}
public function clean ( ) { if ( ! $ this -> enabled ) { return false ; } $ ttl = $ this -> ttl ; $ max_size = $ this -> max_size ; // unlink expired files if ( $ ttl > 0 ) { try { $ expire = new \ DateTime ( ) ; } catch ( \ Exception $ e ) { \ WP_CLI :: error ( $ e -> getMessage ( ) ) ; } $ expire -> modify ( '-' . $ ttl . ' seconds' ) ; $ finder = $ this -> get_finder ( ) -> date ( 'until ' . $ expire -> format ( 'Y-m-d H:i:s' ) ) ; foreach ( $ finder as $ file ) { unlink ( $ file -> getRealPath ( ) ) ; } } // unlink older files if max cache size is exceeded if ( $ max_size > 0 ) { $ files = array_reverse ( iterator_to_array ( $ this -> get_finder ( ) -> sortByAccessedTime ( ) -> getIterator ( ) ) ) ; $ total = 0 ; foreach ( $ files as $ file ) { if ( ( $ total + $ file -> getSize ( ) ) <= $ max_size ) { $ total += $ file -> getSize ( ) ; } else { unlink ( $ file -> getRealPath ( ) ) ; } } } return true ; }
Clean cache based on time to live and max size

@return bool
Clean cache based on time to live and max size