[support] PHP 5.3 upgrade problems

[Earnie Boyd]

Quoting andy baxter <andy at earthsong.free-online.co.uk>:

>
> I have seen it suggested just to remove the & in cases where the
> function is expecting an object. Does this make sense in PHP terms?
>

Unless the function is defined incorrectly and doesn't use the purpose  
of pass by reference then it is absolutely incorrect to remove the &  
from the parameter.  A pass by reference parameter allows changes to  
the external data.  If you remove & then the changes become local to  
the function and the resultant change is not seen externally.

<?php
$a = 1;
$b = 2;

function c(&$c) {
   $c = $c * 2;
}

c($a);
c($b);

print $a . "\n";
print $b . "\n";
?>

Result:
2
4

<?php
$a = 1;
$b = 2;

function c($c) {
   $c = $c * 2;
}

c($a);
c($b);

print $a . "\n";
print $b . "\n";
?>

Result:
1
2


--
Earnie
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