problem with different versions of php

[herpers]

Hi,

I'm not sure where to look up the answer to this question myself, so
maybe you can help me.

The following line of code works fine with php5:

function CheckMappings(&$badMappings=array())

On a system with php4 the following error is thrown:

Parse error: parse error, unexpected '=', expecting ')' in <phpfileon
line 42

Now I would like to know, what the problem is. Is it the '&' or the
default value assignment or a combination of both?

Where would I find documentation on the differences in the versions of
php? Is there a good site? Maybe a table with a feature comparison?

Thanks for your help.
Sascha

[Andy Hassall]

On 9 Nov 2006 22:04:54 -0800, he*****@wiso.uni-koeln.de wrote:

>I'm not sure where to look up the answer to this question myself, so
maybe you can help me.

The following line of code works fine with php5:

function CheckMappings(&$badMappings=array())

On a system with php4 the following error is thrown:

Parse error: parse error, unexpected '=', expecting ')' in <phpfileon
line 42

Now I would like to know, what the problem is. Is it the '&' or the
default value assignment or a combination of both?

It's the default parameter as a reference that's not accepted in PHP 4.

i.e. the following two work on 4 and 5:

function CheckMappings($badMappings = array())
function CheckMappings(&$badMappings)

But the following, as you have it, only works on 5:

function CheckMappings(&$badMappings = array())

There's a note in
http://www.php.net/manual/en/functio...uments.default
that says: "Note: As of PHP 5, default values may be passed by reference."

--
Andy Hassall :: an**@andyh.co.uk :: http://www.andyh.co.uk
http://www.andyhsoftware.co.uk/space :: disk and FTP usage analysis tool