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To: Andrei Zmievski <andrei@gravitonic.com>
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Subject: Re: [PHP-DEV] Re: new function?
From: php@hristov.com (Andrey Hristov)

Hi Andrei :)

Andrei Zmievski wrote:
> On Tue, 13 Jan 2004, Andrey Hristov wrote:
> 
>>Hi,
>>just a correction, I meant array_diff when i wrote array_intersect.
>>array_diff is more handy since just count($res)==0 is enough, $res is the
>>returned array of array_diff().
> 
> 
> Did you actually try array_intersect()?
> 
> - Andrei
> 
Here it is :
andrey@poohie:~/dev/5_0> cat s2.php
<?php
$i = 0;
while ($i++ < 1000) {
         $a[] = $i;
}
$start = microtime(1);
$res = in_array_all(100, 2, 3, $a, true);
$end = microtime(1);
var_dump($res);
printf("Time : %3.5f\n",$end - $start);
$needles = array(100, 2, 3);
$start = microtime(1);
$diff = array_intersect($needles, $a);
$end = microtime(1);
var_dump($diff);
printf("Time : %3.5f\n",$end - $start);


?>andrey@poohie:~/dev/5_0> ./php s2.php
bool(true)
Time :   0.00010
array(3) {
   [0]=>
   int(100)
   [1]=>
   int(2)
   [2]=>
   int(3)
}
Time :   0.03078


About 300x .


Andrey