WP_CLI

FileCache::prepare_write │ protected │ WP-CLI 1.0

Prepare cache write

Method of the class: FileCache{}

No Hooks.

Returns

true|false|String. The destination filename or false when cache disabled or directory creation fails.

Usage

// protected - for code of main (parent) or child class
$result = $this->prepare_write( $key );
$key(string) (required)
cache key.

FileCache::prepare_write() code WP-CLI 2.13.0-alpha

wp-cli/php/WP_CLI/FileCache.php 
protected function prepare_write( $key ) {
	if ( ! $this->enabled ) {
		return false;
	}

	$filename = $this->filename( $key );

	if ( ! $this->ensure_dir_exists( dirname( $filename ) ) ) {
		return false;
	}

	return $filename;
}