Home » Caching » Cache_Lite » Bug #660

[2004-02-01 11:45 UTC] eikke at eikke dot com

Description:
------------
If I try to use PEAR::Cache_Lite's Cache_Lite_Function class in a class of mine, I cannot cache results of methode calls of that class itself (error on $this->_cache->call('this->_myFunction', 'arg1', 'arg2'))

These 2 possible solution do not work:
a) $tmp=$this;
$this->_cache->call('tmp->_myFunction', 'arg1', 'arg2');

b) $tmp=& $this;
$this->_cache->call('tmp->_myFunction', 'arg1', 'arg2');

Reproduce code:
---------------
<?php
require_once 'Cache/Lite/Function.php';
class myClass{
var $_cache;
function myClass(){
$options = array('caching' => true,
'cacheDir' => '../cache',
'lifeTime' => 1800);
$this->_cache = new Cache_Lite_Function($options);
}
function _myTest($a, $b){
return $a."+".$b."=".($a+$b);
}
function getResult($c, $d){
$ret=$this->_cache->call('this->_myTest', $c, $d);
return $ret;
}
}
$mc=new myClass();
echo $mc->getResult(1,2);
?>

Expected result:
----------------
1+2=3

Actual result:
--------------
Fatal error: Call to a member function on a non-object in /usr/local/lib/php/Cache/Lite/Function.php on line 103

[2004-02-07 13:34 UTC] fab at php dot net

I don't find any good solution.

But, a good workaround is :
<?php
(...)
function getResult($c, $d){
global $temp; // WITHOUT THIS, IT DOESN'T WORK
$temp = $this;
$ret=$this->_cache->call('temp->_myTest', $c, $d);
return $ret;
}
(...)
?>

[2004-10-12 20:04 UTC] dcech at phpwerx dot net

You can call it like:

$this->_cache->call(array(&$this,'myFunction'), 'arg1', 'arg2');

It will generate 2 notices but will work just fine.