[RESOLVED] Adding keys to new elements.

@Mr_Initial_ManFeb 09.2009

I have a script that adds elements to PHP arrays.

Some arrays are 2-dimensional, and to this array, I want to add keys so I can sort the array later.

So far I have

[code=php]$link_arr[$sec_slot] = Array()[/code]

Where can I add the key?

to post a comment

PHP

7 Comments(s) _↴

@NogDogFeb 09.2009 — #You can either add them all in one go with:

[code=php]
 $link_arr[$sec_slot] = array('key1' => 'value1', 'key2' => 'value2);
 [/code]

Or you can add them one at a time with:

[code=php]
 $link_arr[$sec_slot] = array();
 $link_arr[$sec_slot]['key1'] = 'value1';
 $link_arr[$sec_slot]['key2'] = 'value2';
 [/code]

@Mr_Initial_ManauthorFeb 09.2009 — #Ummm... that's not entirely what I want.

What I want is to be able to use either

[code=php]
 $link_arr[1]
 $link_arr[2]
 $link_arr[3]
 [/code]

[code=php]
 $link_arr[key1]
 $link_arr[key2]
 $link_arr[key3]
 [/code]

($link_arr[0] doesn't get a key, and is dealt with elsewhere.)

Essentially, I want to be able to sort whole sub-arrays with ksort().

@NogDogFeb 09.2009 — #I guess I don't understand. ?

@Mr_Initial_ManauthorFeb 09.2009 — #Okay. If I were creating the elements to $link_arr all at once, I would try something like this:

[code=php]
 $link_arr = Array(
 'Key1' => Array('Element1', 'Element2'),
 'Key2' => Array('Element1', 'Element2'),
 'Key3' => Array('Element1', 'Element2'),
 'Key4' => Array('Element1', 'Element2'),
 'Key5' => Array('Element1', 'Element2')
 )
 [/code]

However, $link_arr has to be created dynamically! When I stick on a new element (which is in itself an array), I want to know how to assign a key to that new element.

@NogDogFeb 09.2009 — #Do you mean:

[code=php]
 $link_arr = array();
 $link['Key1'] = array('Element1', 'Element2');
 [/code]

@Mr_Initial_ManauthorFeb 09.2009 — #I think I've got it:

[code=php]...
 
   for($sec_name_num=0; $sec_name_num < count($sec_name_arr); $sec_name_num++){
   if($sec_name_arr[$sec_name_num] == $section_name){
   $unique=false;
   $sec_id=$sec_name_num;
   }
   }
   if($unique){
   $sec_slot = count($sec_name_arr);
   array_push($sec_name_arr, $section_name);
   $link_arr[$section_name] = Array();
   $link_arr[$section_name][0] = ('<li><a href="' . $url->item(0)->nodeValue . '">' . $name->item(0)->nodeValue . '</a></li>');
 
   } else {
   $link_sec_id = $sec_name_arr[$sec_id];
   array_push($link_arr[$link_sec_id], ('<li><a href="' . $url->item(0)->nodeValue . '">' . $name->item(0)->nodeValue . '</a></li>'));
   }
 ...
 
 sort($sec_name_arr);
 
 for ($i=0; $i < count($sec_name_arr); $i++){
 echo ($t3 . (($i > 0)?('<h3>' . $sec_name_arr[$i] . '</h3>' . $n  . $t3):('')) . '<ul>' . $n);
 if ($i==0){
 for($l=0; $l < count ($link_arr[$i]); $l++){
 echo ($t4 . $link_arr[$i][$l] . $n);
 }
 } else {
 for($l=0; $l < count ($link_arr[$sec_name_arr[$i]]); $l++){
 echo ($t4 . $link_arr[$sec_name_arr[$i]][$l] . $n);
 
   }
  }
  echo ($t3 . '</ul>' . $n);
 }
 [/code]

If you'd like to see my whole PHP file, just let me know.

By the way, what's an "Illegal Offset Type" error?

EDIT: Never mind, I just figured it out. I was using an object as a key. :eek:

@Mr_Initial_ManauthorFeb 09.2009 — #*Marks thread resolved, with copy of PHP file so others can see what I did.*

[code=php]<?php
 header('Content-type: application/xhtml+xml; charset=utf-8');
 
 if(empty($_GET['keyword'])){
 $kwd = 'Welcome';
 } else {
 $kwd = $_GET['keyword'];
 }
 $xml_dom = new DOMDocument();
 $xml_dom -> loadXML(file_get_contents('./links.xml'));
 
 
 //Other Stuff.
 $t3 = "ttt";
 $t4 = "tttt";
 $n = "rn";
 
 ?>
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
 
 <html xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">
 <head>
 <meta http-equiv="Content-Type" content="application/xhtml+xml; charset=utf-8" />
 <meta http-equiv="Content-Style-Type" content="text/css" />
 <meta http-equiv="Content-Script-Type" content="application/javascript" />
 <link type="text/css" rel="stylesheet" href="./setup.css" />
 <title>HomePage</title>
 </head>
 <body>
 <h1>Homepage</h1>
 <ul id="Menu">
 <li><a href="about:blank" class="blank">Blank Page</a></li>
 <?php
 
 $key_list = $xml_dom -> getElementsByTagName('kwd');
 $key_arr = Array();
 
 foreach($key_list as $keyword){
 $kword = $keyword -> nodeValue;
 $key_arr[$kword] = '<li><a href="index.php?keyword=' . $kword . '">' . $kword . '</a></li>';
 }
 
 ksort($key_arr);
 
 foreach($key_arr as $keylink){
 echo ($t3 . $keylink . $n);
 }
 ?>
 <li><a href="about:blank" class="blank">Blank Page</a></li>
 </ul>
 <div id="Main">
 <h2><?php echo $kwd; ?></h2>
 <?php
 if($kwd=='Welcome'){
 echo $t3 . '<p>All Systems Are Go.</p>' . $n;
 } else {
 
 }
 ?>
 <?php
 
 
 //  Set up Link Array
 $link_arr = Array();
 $link_arr[0] = Array();
 
 // Set Up Section Array
 $sec_name_arr = Array();
 $sec_name_arr[0]='';
 
 $links = $xml_dom -> getElementsByTagName ('link');
 
 foreach ($links as $link){
 $link_kwds = $link -> getElementsByTagName ('kwd');
 foreach ($link_kwds as $link_kwd){
 if($link_kwd->nodeValue == $kwd){
 $url = $link->getElementsByTagName('url')->item(0)->nodeValue;
 $name = $link->getElementsByTagName('name')->item(0)->nodeValue;
 $sections = $link->getElementsByTagName('sec');
 $sec_elements=0;
 foreach($sections as $section){
 if($section->getElementsByTagName('kword')->item(0)->nodeValue==$kwd){
 $sec_elements++;
 }
 }
 if($sec_elements==0){
 $link_arr[0][$name] = ('<li><a href="' . $url . '">' . $name . '</a></li>');
 } else {
 foreach($sections as $section){
 if($section->getElementsByTagName('kword')->item(0)->nodeValue==$kwd){
 $section_name = $section->getElementsByTagName('s')->item(0)->nodeValue;
 $unique=true;
 $sec_id=0;
 for($sec_name_num=0; $sec_name_num < count($sec_name_arr); $sec_name_num++){
 if($sec_name_arr[$sec_name_num] == $section_name){
 $unique=false;
 $link_sec_id = $sec_name_arr[$sec_name_num];
 $link_arr[$link_sec_id][$name] = ('<li><a href="' . $url . '">' . $name . '</a></li>');
 }
 }
 if($unique){
 $sec_slot = count($sec_name_arr);
 array_push($sec_name_arr, $section_name);
 $link_sec_id = $section_name;
 $link_arr[$link_sec_id] = Array();
 $link_arr[$link_sec_id][$name] = ('<li><a href="' . $url . '">' . $name . '</a></li>');
 }
 }
 }
 }
 }
 }
 }
 
 
 sort($sec_name_arr);
 
 for ($i=0; $i < count($sec_name_arr); $i++){
 echo ($t3 . (($i > 0)?('<h3>' . $sec_name_arr[$i] . '</h3>' . $n  . $t3):('')) . '<ul>' . $n);
 if ($i==0){
 ksort($link_arr[$i]);
 foreach($link_arr[$i] as $hyperlink){
 echo ($t4 . $hyperlink . $n);
 }
 } else {
 ksort($link_arr[$sec_name_arr[$i]]);
 foreach($link_arr[$sec_name_arr[$i]] as $hyperlink){
 echo ($t4 . $hyperlink . $n);
 
   }
  }
  echo ($t3 . '</ul>' . $n);
 }
 ?>
 
   </div>
   <script type="application/javascript">
   //<![CDATA[
   var a1 = document.getElementById('Main').getElementsByTagName('a');
   for(var i = 0; i < a1.length; i++){a1[i].setAttribute('target', '_blank');}
   var a2 = document.getElementById('Menu').getElementsByTagName('a');
   for(var i=0; i<a2.length; i++){(a2[i].getAttribute('class') == 'blank')?a2[i].setAttribute('target', '_blank'):''}
   //]]>
   </script>
  </body>
 </html>[/code]

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