SelfCheckingResourceInterface
extends
ResourceInterface
in
Interface for Resources that can check for freshness autonomously, without special support from external services.
Tags
Table of Contents
- __toString() : string
- Returns a string representation of the Resource.
- isFresh() : bool
- Returns true if the resource has not been updated since the given timestamp.
Methods
__toString()
Returns a string representation of the Resource.
public
__toString() : string
This method is necessary to allow for resource de-duplication, for example by means of array_unique(). The string returned need not have a particular meaning, but has to be identical for different ResourceInterface instances referring to the same resource; and it should be unlikely to collide with that of other, unrelated resource instances.
Return values
string —A string representation unique to the underlying Resource
isFresh()
Returns true if the resource has not been updated since the given timestamp.
public
isFresh(int $timestamp) : bool
Parameters
- $timestamp : int
-
The last time the resource was loaded
Return values
bool —True if the resource has not been updated, false otherwise