Description:
------------
strstr() does not handle the third parameter appropriately for before_needle.

This uses the example provided in the documentation for strstr.

Reproduce code:
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$email  = 'name@example.com';
$user = strstr($email, '@', true);
echo $user;

Expected result:
----------------
It should print "name"

Actual result:
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Nothing is displayed and I receive the error:

Warning: Wrong parameter count for strstr() in /xxx/xxx/x/test_read.php5

This also occured using PHP 4.4.7.