RE: SPL Iterator and Associative Array

["Jason Karns" <karnsj@xxxxxxxxxxxxxxxxxx>]

> -----Original Message-----
> From: Greg Beaver [mailto:cellog@xxxxxxx] 
> Sent: Friday, June 02, 2006 10:39 PM
> To: Jason Karns
> Cc: php-general@xxxxxxxxxxxxx
> Subject: Re: SPL Iterator and Associative Array
> 
> Jason Karns wrote:
> > I'm going to try my best to explain what I'm trying to do.
> > 
> > I have my own class that has an array member.  This class itself 
> > implements Iterator.  One of the fields in the array is itself an 
> > array that I would like to iterate over. Here's some code:
> > 
<snip>
> 
> <snip>
> Hi Jason,
> 
> The code you pasted is littered with fatal errors and bugs (I 
> marked one example with "^^" above).  Please paste a real 
> batch of code that you've tested and reproduces the error and 
> that will be much more helpful.  The PHP version would be 
> helpful to know as well.
> 
> Greg
> 
> --
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>  
> 

<?php
class Folio implements Iterator {
 	private $projects = array();
	private $valid = FALSE;
	public function __construct($file = null) {
		if(!is_null($file))
			$this->load($file);
	}
	public function load($file){
		...
		$keys = array();
		$values = array();
		foreach ($projects as $project) {
			$small = array();
			$big = array();
			foreach
($xpath->query('showcase/images/screenshot/thumbnail',$project) as $img){
				$small[] = $img->nodeValue;}
			foreach
($xpath->query('showcase/images/screenshot/src',$project) as $img){
				$big[] = $img->nodeValue;}
				
			$keys[] =
$xpath->query('@id',$project)->item(0)->nodeValue;
			$values[] = array(
	
'title'=>$xpath->query('showcase/title',$project)->item(0)->nodeValue,
	
'href'=>$xpath->query('livesite',$project)->item(0)->nodeValue,
	
'clip'=>$xpath->query('showcase/images/feature/thumbnail',$project)->item(0)
->nodeValue,
				'big'=>$big,
				'small'=>$small,
	
'text'=>$xpath->query('showcase/description',$project)->item(0)->nodeValue);
		}
		$this->projects = array_combine($keys,$values);
	}
	
	function &smalls($x=null){
		if(is_null($x) or !key_exists($x,$this->projects)) $x =
$this->key();
		return $this->projects[$x]['small'];
	}
	
	function small_src($x=null){
		if(is_null($x) or !key_exists($x,$this->projects)) $x =
$this->key();
		return current($this->projects[$x]['small']);
	}

	function small($x=null){
		if(is_null($x) or !key_exists($x,$this->projects)) $x =
$this->key();
		return '<a href="'.$this->small_href().'"
title="'.$this->small_title().'">'.$this->small_img($x).'</a>';
	}

}
?>

<?php
	reset($folio->smalls());
	while($s = current($folio->smalls())){
		echo $folio->small();
		next($folio->smalls());
	}
	
	foreach($folio->smalls() as $s){
		echo $folio->small();
	}
?>

Production server will be PHP 5.1.2, developing on 5.0.5
I am also considering making my own 'project' object and having Folio have
an array of 'projects' rather than using the array of associative arrays.
Would this provide a solution?

Thanks,
Jason

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