Description:
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parametre count didn't work well

Reproduce code:
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the doc code

<?php
$count = 0;

echo preg_replace(array('/\d/', '/\s/'), '*', 'xp 4 to', -1 , $count);
echo $count; //3
?> 



Expected result:
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i expect the doc result 3 :)

Actual result:
--------------
actualy the result I have is

Warning: Wrong parameter count for preg_replace() in e:\...php on line x 

it meen that the $count variable is to much I think !
maby the probleme came because i don't upgrade my php version well.(php4->php5)

other question :

why the php.net don'give the same synthaxe for the preg_replace than nexen.net

PHP.NET =>
mixed preg_replace ( mixed pattern, mixed replacement, mixed subject [, int limit [, int &count]] )


NENXEN.NET =>
mixed  preg_replace ( mixed   pattern , mixed   replacement , mixed   subject , int   limit , int   count ) 


int &count != int count
    ^
(using reference ???)

thanks telnes