Re: [PHP-DEV] Re: [PHP4BETA] array_walk: calling functions taking only ONE paramet && calling methods = not possible? From: thies <email protected>
Date: 05/29/00

On Mon, May 29, 2000 at 05:56:04PM +0200, waldschrott wrote:
> so we can stay at the point that using array_walk() within classes is
> not possible if one wants to call a function which only accepts one
> parameter, so I´m not able to manipulate some arrays inside a class

    you cannot pass a the name of a object's-method where PHP
    expects a name to a user-land callback function. that is the
    current design. we are aware of this limitation.

    using references you should be able to write a "normal"
    function and keep &$this in some global variable. though i do
    agree that this is not a nice way of doing things.

>
> catching (2) in the future would eliminate the need for (1), one can
> then create wrapper methods
>
> should I create a bug report for this?

    a feature-request would be more appropiate;-)

    tc

>
> regards
>
>
> > On Mon, May 29, 2000 at 05:29:27PM +0200, waldschrott wrote:
> > > sorry, did not think about posting to both lists...
> > >
> > > here is the 10 line (comments not counted) simplified example, it does
> > > not do what it has done before, but it demonstrates the both cases 1) and 2)
> > > $this->array should consist of an array with printable examples to the
> > > selected type, because this did not work i had to work around it, but I
> > > think calling methods and accessing functions needing one parameter are
> > > important things
> > >
> > > regards
> > >
> > > --- snip ---
> > > <?php
> > > $obj=new RX_mail(1);
> > >
> > > class RX_mail {
> > > var $examples=array(1=>array('foo <email protected>','"foo" <email protected>',
> > > '* <email protected>'),
> > > 2=>array('"foobiee" <foo <email protected>>','<subfoo <email protected>>'));
> > > function RX_mail($type) {
> > > $this->array=$this->examples[$type];
> > > // Before returning $this->examples[$type] I wanted to array_walk
> > > // all items to be able to display them
> > >
> > > // 1) does not work
> > > array_walk($this->array,'htmlspecialchars');
> >
> > sorry only user-functions can be called by array_walk (and
> > all other functions that accept a callback like this)
> >
> > so you need to create a functions in your script that then
> > calles htmlspecialchars() and you should be fine.
> >
> >
> > > // 2 does not work, as said
> > > array_walk($this->array,'this->wrapper'); }
> >
> > this is not supported right now - might get added somewhen in
> > the future!
> >
> >
> > tc
> >
> > >
> > > function wrapper(&$param1,$param2='') {
> > > return htmlspecialchars($param1); }}
> > > ?>
> > > --- snip ---
> > >
> > > > On Mon, May 29, 2000 at 04:41:10PM +0200, waldschrott wrote:
> > > > > Hi,
> > > > > I tried to things with array_walk.
> > > > > 1) Calling a function like htmlspecialchars() with array_walk(), but it
> > > > > does not work: results in a wrong parameter count in array_walk(), I
> > > > > think array_walk() tries to use the numeric key as a second parameter
> > > > > for htmlspecialchars(), how do I avoid this.
> > > > > 2) After that I tried to avoid that calling a wrapper method in
> > > > > array_walk, I then had to notice that it´s not possible to call methods
> > > > > with array_walk();
> > > >
> > > > calling methods is currently not implemented for most
> > > > functions that have php-callbacks.
> > > >
> > > > >
> > > > > Either array_walk is missing some functionality or I am missing
> > > > > something....
> > > >
> > > > any chance to send a short (10 lines) script that shows the
> > > > behaviour?
> > > >
> > > > >
> > > > > regards
> > > > >
> >
> > --
> >
> > Thies C. Arntzen "One Big-Mac, Small Fries and a Coke!"
> > Digital Collections Phone +49 40 235350 Fax +49 40 23535180
> > Hammerbrookstr. 93 20097 Hamburg / Germany
> >
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Thies C. Arntzen                 "One Big-Mac, Small Fries and a Coke!"
Digital Collections             Phone +49 40 235350 Fax +49 40 23535180
Hammerbrookstr. 93                              20097 Hamburg / Germany

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