Cache_Lite_Function::call

Cache_Lite_Function::call() – Calls a cacheable function or method (or not if there is already a cache for it)

Synopsis

require_once 'Cache/Lite/Function.php';

mixed Cache_Lite_Function::call ( string$functionName , mixed$arg1 , mixed$arg2 , mixed$arg3 , mixed... )

Description

call the given function with given arguments only if there is no cache about it ; else, the output of the function is read from the cache then send to the browser and the return value if read also from the cache and returned.

Return value

returns result of the function/method

Note

This function can not be called statically.

Example

classical using with a function

<?php

require_once('Cache/Lite/Function.php');

$options = array(
    
'cacheDir' => '/tmp/',
    
'lifeTime' => 3600
);

$cache = new Cache_Lite_Function($options);

$cache->call('function_to_bench'1245);

function 
function_to_bench($arg1$arg2
{
    echo 
"This is the output of the function function_to_bench($arg1$arg2) !<br>";
    return 
"This is the result of the function function_to_bench($arg1$arg2) !<br>";
}

?>

Example

classical using with a method

<?php

require_once('Cache/Lite/Function.php');

$options = array(
    
'cacheDir' => '/tmp/',
    
'lifeTime' => 3600
);

$cache = new Cache_Lite_Function($options);

$obj = new bench();
$obj->test 666;

$cache->call('obj->method_to_bench'1245);

class 
bench
{
    var 
$test;

    function 
method_to_bench($arg1$arg2)
    {
        echo 
"\$obj->test = $this->test and this is the output of the method \$obj->method_to_bench($arg1$arg2) !<br>";
        return 
"\$obj->test = $this->test and this is the result of the method \$obj->method_to_bench($arg1$arg2) !<br>";        
    }
    
}

?>

If you try to use Cache_Lite_Function with $this object ($cache->call('this->method',...) for example), have a look first at the last example of this page.

Example

classical using with a static method

<?php

require_once('Cache/Lite/Function.php');

$options = array(
    
'cacheDir' => '/tmp/',
    
'lifeTime' => 3600
);

$cache = new Cache_Lite_Function($options);

$cache->call('bench::static_method_to_bench'1245);

class 
bench
{
    var 
$test;

    function 
static_method_to_bench($arg1$arg2) {
        echo 
"This is the output of the function static_method_to_bench($arg1$arg2) !<br>";
        return 
"This is the result of the function static_method_to_bench($arg1$arg2) !<br>";
    }
}

?>

Example

another using with a method (how to use cache $this->method() calls)

<?php

// Since Cache_Lite-1.7.0beta2

require_once('Cache/Lite/Function.php');

$options = array(
    
'cacheDir' => '/tmp/',
    
'lifeTime' => 3600
);

$obj = new foo($options);

class 
foo
{

    var 
$test;
    
    function 
foo($options)
    {
        
$cache = new Cache_Lite_Function($options);
        
$this->test 'foobar';
        
$cache->call(array(&$this'method_bar'), 1245);
    }
    
    function 
method_bar($arg1$arg2)
    {
        echo 
"\$this->test = $this->test and this is the output of the method \$this->method_bar($arg1$arg2) !<br>";
        return 
"\$this->test = $this->test and this is the result of the method \$this->method_bar($arg1$arg2) !<br>";        
    }

}

?>

So, for method calls, the best way is to use array(&$object, 'nameOfTheMethod') as first argument instead of '$object->nameOfTheMethod' which doesn't work with "$this" for example.

Constructor (Previous) Drop a cache file (Next)
Last updated: Tue, 22 Apr 2014 — Download Documentation
Do you think that something on this page is wrong? Please file a bug report or add a note.
View this page in:

User Notes:

There are no user contributed notes for this page.