Re: strtr array replace issue...

[Keith Roberts <keith@xxxxxxxxxxxx>]

On Mon, 9 Feb 2009, Brad Freshour wrote:

> To: php-install@xxxxxxxxxxxxx
> From: Brad Freshour <bfreshour@xxxxxxxxx>
> Subject:  strtr array replace issue...
>
> Apache: 2.2.8 threaded
> PHP: 5.2.4-2
> mySQL: 5.051.a
>
> Ubuntu 8.04 minimal with everything needed installed via apt-get.
>
> Using SMF forum, I'm having an issue with the strtr command...  Here's
> the code...
>
> $ftp_file = strtr($filename, array ($_SESSION['pack_ftp']['root'] =>''));
>
> The $_SESSION['pack_ftp']['root'] variable is an empty set: ''
>
> Well, if the above strtr command was translated it would look like this:
>
> strtr("/home/user/public_html/Packages/temp", array ('' =>''));
>
> You would think that the return would be : /home/user/public_html/Packages/temp
>
> However, it returns '' instead.
>
> I can get around this by modifying the code to the site manually and
> checking to see if $_SESSION['pack_ftp']['root'] == '' and if it does
> assign it something crazy, like $_SESSION['pack_ftp']['root'] =
> '%%%%%'
>
> However, the code works on another site I have that's hosted for me
> (shared hosting).
>
> Anyone have any ideas?
>
> I was wondering if it was related to this: http://bugs.php.net/bug.php?id=27457
> But that seems like an old bug...
>
> Thanks.

You can run php as a 'BASIC-style' command-line interpreter 
and debug awkward code like this one line at a time.

Just do:

[root@localhost keith]# php -a
Interactive shell

php > $a= "hello";
php > echo $a;
hello
php >

All the php functions are available in interactive mode.
That way you get immediate feedback on how your code works :)

Kind Regards,

Keith

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