WP_CLI

FileCache::read │ public │ WP-CLI 1.0

Read from cache file

Method of the class: FileCache{}

No Hooks.

Returns

true|false|String. file contents or false

Usage

$FileCache = new FileCache();
$FileCache->read( $key, $ttl );
$key(string) (required)
cache key.
$ttl(int)
time to live.
Default: null

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

wp-cli/php/WP_CLI/FileCache.php 
public function read( $key, $ttl = null ) {
	$filename = $this->has( $key, $ttl );

	if ( $filename ) {
		return file_get_contents( $filename );
	}

	return false;
}