WP_CLI

FileCache::write │ public │ WP-CLI 1.0

Write to cache file

Method of the class: FileCache{}

No Hooks.

Returns

true|false.

Usage

$FileCache = new FileCache();
$FileCache->write( $key, $contents );
$key(string) (required)
cache key.
$contents(string) (required)
file contents.

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

wp-cli/php/WP_CLI/FileCache.php 
public function write( $key, $contents ) {
	$filename = $this->prepare_write( $key );

	if ( $filename ) {
		return file_put_contents( $filename, $contents ) && touch( $filename );
	}

	return false;
}