scache - scache

scache_exists

Description

bool scache_exists(resource session, string path)

bool $SCacheConnection->exists(string path)

scache_exists tests whether path exists and contains value.

Parameters

session

Session resource returned from scache_open, scache_reset or scache_connect

path

Slash (/) separated path on backend's session tree. Path parameter is not binary safe.

Return values

TRUE if path exists, FALSE if not. Internally function is local wrapper over scache_stat and return same error values if error.

SCERR_NO_SESSION Connected session does not exist or has been expired. Connection is not valid any more.
SCERR_NOT_CONNECTED Connection to backend is broken and cannot be reconnected.
SCERR_PROTOCOL Internal protocol error has occurred when communicating to backend. This indicates something is severely broken.

Examples

<?php

/* get connection */
$session = scache_reset('MyEasilyGuessableSecret');

scache_set($session, 'key', 'value');
if (scache_exists($session, 'key')) {

    echo "It is still there!!\n";

} else {

    echo "This software is pure crap.\n";

}
?>