How to avoid call-time pass-by-reference deprecated error in PHP?

Question

I\'m trying to reduce the warnings that are sent to my apache server log.

One warning is:

Call-time pass-by-reference has bee

Answer 1

You can set allow_call_time_pass_reference to true in your php.ini file. But it's a hack.

Answer 2

You could pass an array with a reference in:

public function takeScriptsWithMarker(array(&$lines, $marker))

which should only take a small amount of refactoring at the other end.

Answer 3

like noted above in a previous answer, the issue is at CALL time, not definition time.. so you could define a function as:

function foo(&$var1,$var2,$var3=null){
    // procesing here
}

then call as:

$return = foo($invar1,$invar2);

your first invar is passed by reference, second one is not.

the error appears when you try to call like so:

$return = foo(&$invar1,$invar2);

Answer 4

You could pass in the array, let it manipulate it, and then "return" it, instead of messing with the original reference. It shouldn't be too hard to just include a return and assignment.

public function takeScriptsWithMarker($lines, $marker) {
    //...
    return $lines;
}

Usage:

$lines = takeScriptsWithMarker($lines, $marker);

Answer 5

Actually, there's no problem with the way you define the function. Is a problem with the way you call the function. So for your example, instead of calling it like:

takeScriptsWithMarker(&$lines, $marker);

You'd call it like:

takeScriptsWithMarker($lines, $marker); // no ampersands :)

So the feature is still available. But I don't know the reason behind this change.