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    <p>Use JSON. see why JSON over XML: <a href="http://thephpcode.blogspot.com/2008/08/why-json-over-xml-in-ajax.html" rel="noreferrer">http://thephpcode.blogspot.com/2008/08/why-json-over-xml-in-ajax.html</a></p> <p>To use json in PHP simply:</p> <pre><code>&lt;?php echo '&lt;script type="text/javascript"&gt;/* &lt;![CDATA[ */'; echo 'var train = '.json_encode($array); echo '/* ]]&gt; */&lt;/script&gt;'; ?&gt; </code></pre> <p>the variable <code>train</code> in Javascript will be an object containing properties and arrays based on your PHP variable <code>$array</code>.</p> <p>To parse or iterate through the train object, you can use <code>for ... in</code> statements for JSON arrays, and directly use object.property for JSON objects.</p> <p>See this:</p> <pre><code>&lt;?php $array = array(array('id'=&gt;3,'title'=&gt;'Great2'),array('id'=&gt;5,'title'=&gt;'Great'),array('id'=&gt;1,'title'=&gt;'Great3')) echo '&lt;script type="text/javascript"&gt;/* &lt;![CDATA[ */'; echo 'var train = '.json_encode($array); echo '/* ]]&gt; */&lt;/script&gt;'; ?&gt; </code></pre> <p>The output will be:</p> <pre><code> var train = [{id:3,title:'Great2'},{id:5,title:'Great'},{id:1,title:'Great3'}]; </code></pre> <p>the variable <code>train</code> becomes an array of objects. [] squrare brackets are arrays, holding more arrays or objects. {} curly braces are objects, they have properties to them.</p> <p>So to iterate the <code>train</code> variable:</p> <pre><code>&lt;script type="text/javascript"&gt; var train = [{id:3,title:'Great2'},{id:5,title:'Great'},{id:1,title:'Great3'}]; for(i in train){ var t = train[i]; // get the current element of the Array alert(t.id); // gets the ID alert(t.title); // gets the title } &lt;/script&gt; </code></pre> <p>Simple! Hope that really helps.</p>
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    1. COThanks Mauris! Your code example was really helpful. I was wondering how I would convert the PHP array to JSON in the js, and now I know.
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    2. COHey Chris, no problem at all!
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    3. COHi Marius: now that I have this JSON object in my js, how do I iterate over it? Can you please give me a code example for this? Thanks!
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