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  1. PO
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    <p>It's quite easy to pass data from PHP -> JS without resorting to hiding it inside the DOM. The trick is the json_encode() function - it will convert php strings, array, etc into a valid javascript format. See your example below, fixed up:</p> <pre><code>&lt;?php $world = file_get_contents('http://url.com/testworld.txt'); ?&gt; &lt;html&gt; &lt;head&gt; &lt;script src="http://code.jquery.com/jquery-latest.js"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="js/game.js"&gt;&lt;/script&gt; &lt;/head&gt; &lt;body onload="init()"&gt; &lt;script type="text/javascript"&gt; //World is defined here, and accessible to the javascript that runs on the page var world = &lt;?=json_encode($world)?&gt;; &lt;/script&gt; &lt;canvas id="game" width="650" height="366" style="border: 2px solid black;"&gt;&lt;/canvas&gt; &lt;br /&gt; &lt;h1&gt; Currently in development.&lt;/h1&gt; &lt;br /&gt; &lt;/body&gt; </code></pre> <p></p> <hr> <p>I'm pretty sure your troubles are occurring because of the way that scoping of variables works in javascript. This simple example <em>must</em> work for you:</p> <pre><code>&lt;?php $foo = "\"Hello world!\""; ?&gt; &lt;html&gt; &lt;head&gt; &lt;/head&gt; &lt;body&gt; &lt;script type="text/javascript"&gt; var foo = &lt;?=json_encode($foo)?&gt;; alert("The value of foo is: " + foo); &lt;/script&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>So in the context of the inline script, the <code>foo</code> variable is present. Perhaps if your code were to look like:</p> <pre><code>&lt;script type="text/javascript"&gt; //Load the game world, and pass to the javascript lib var world = &lt;?=json_encode($world)?&gt;; loadWorld(world); &lt;/script&gt; </code></pre> <p>then you wouldn't have to worry about scoping so much?</p>
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    1. POJavascript value undefined when passing from PHP
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    1. COI'm getting a "world is not defined" in my Javascript file
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      1. USZach Wulf
    2. COTry defining `var world;` in your javascript file, and just using `world = ...` in the HTML.
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    3. COThat's somewhat better, but it just spits out "undefined" onto the page where the contents of the file should go.
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