Getting 'by reference' error using array_walk. How do I use it then?

[lwoods]

I have the following function:

function clean_form( &$from_check ) {
if(is_array($fr om_check)){
array_walk(&$fr om_check,'clean _form');
return;
} else {
$value = str_replace(arr ay("\r","\n","C ontent-Type:"),"",$fro m_check);
}

When I call this function I get the following warning:

Warning: Call-time pass-by-reference has been deprecated - argument passed
by value; If you would like to pass it by reference, modify the declaration
of array_walk(). If you would like to enable call-time pass-by-reference,
you can set allow_call_time _pass_reference to true in your INI file.
However, future versions may not support this any longer.

In the PHP doc it shows referencing the array argument "by reference"; i.e.
'&' , but the runtime says this is a "no go". Then how am I supposed to use
array_walk?

TIA,

Larry Woods

[Ewoud Dronkert]

Re: Getting 'by reference' error using array_walk. How do I use it then?

lwoods wrote:[color=blue]
> function clean_form( &$from_check ) {
> array_walk(&$fr om_check,'clean _form');[/color]

You need to define at least two parameters for the function you call with
array_walk: array and item. So try: function clean_form(&$fr om_check,
$value) { etc. }. That might take care of the error.

--
E. Dronkert

[Chung Leong]

Re: Getting 'by reference' error using array_walk. How do I use it then?

lwoods wrote:[color=blue]
> I have the following function:
>
> function clean_form( &$from_check ) {
> if(is_array($fr om_check)){
> array_walk(&$fr om_check,'clean _form');
> return;
> } else {
> $value = str_replace(arr ay("\r","\n","C ontent-Type:"),"",$fro m_check);
> }
>
> When I call this function I get the following warning:
>
> Warning: Call-time pass-by-reference has been deprecated - argument passed
> by value; If you would like to pass it by reference, modify the declaration
> of array_walk(). If you would like to enable call-time pass-by-reference,
> you can set allow_call_time _pass_reference to true in your INI file.
> However, future versions may not support this any longer.
>
> In the PHP doc it shows referencing the array argument "by reference"; i.e.
> '&' , but the runtime says this is a "no go". Then how am I supposed to use
> array_walk?
>
> TIA,[/color]

array_walk() is declared to take a reference as the first argument, so
you don't need to use & when you call the function. Just do
array_walk($fro m_check,'clean_ form').

The error message is bogus though. The array will still be passed by
reference in this instance. Report it as a bug.