CODEWITHSUNDEEP
phpactionscript-3flashcaching
Bill Kotsias
Bill Kotsias

Reputation: 3368

Flash doesn't cache PHP anymore?

I am loading this PHP file from my server:

<?php
echo date('z Y H:i:s');
?>

and I always get the current time rather than an old, cached one. I am loading it normally, without any "?"+Math.random() at the end of its address.

Can anyone confirm that Flash intentionally no longer caches .php files? Or do I get something wrong?

Edit:

I don't know if this clarifies things or perplexes them more, but here is my PHP loading class:

package fanlib.utils
{
    import flash.events.Event;
    import flash.events.IOErrorEvent;
    import flash.net.URLLoader;
    import flash.net.URLLoaderDataFormat;
    import flash.net.URLRequest;
    import flash.net.URLRequestHeader;
    import flash.net.URLRequestMethod;
    import flash.utils.Dictionary;

public class QuickLoad
{
    static private const DONT_GC:Dictionary = new Dictionary();

    private var funcLoaded:Function;

    public function QuickLoad(file:String, funcLoaded:Function, format:String = URLLoaderDataFormat.TEXT, skipCache:Boolean = false)
    {
        DONT_GC[this] = this;

        this.funcLoaded = funcLoaded;
        const loader:URLLoader = new URLLoader();
        loader.dataFormat = format;
        loader.addEventListener(Event.COMPLETE, loadComplete);
        loader.addEventListener(IOErrorEvent.IO_ERROR, error);

        const request:URLRequest = new URLRequest(file);

        if (skipCache) {
            const header:URLRequestHeader = new URLRequestHeader("pragma", "no-cache");
        //  request.data = new URLVariables("cache=no+cache");
            request.method = URLRequestMethod.POST;
            request.requestHeaders.push(header);
        }

        loader.load(request);
    }

    private function loadComplete(e:Event):void {
        var loader:URLLoader = e.target as URLLoader;
        loader.removeEventListener(Event.COMPLETE, loadComplete);
        loader.removeEventListener(IOErrorEvent.IO_ERROR, error);
        funcLoaded(loader.data);
        delete DONT_GC[this]; // get me now
        funcLoaded = null;
    }

    private function error(e:IOErrorEvent):void {
        trace(this, e.text);
    }
}
}

I get the same uncached result whether I am setting skipCache to either true or false.

Upvotes: 0

Views: 89

Answers (1)

Misunderstood
Misunderstood

Reputation: 5665

Flash has nothing to do with the cached HTML. It is the HTTP Response Header (e.g. max-age, pragma, expiration, ETag) and the method used to load the page (e.g. POST Requests do not cache, Refresh may override cache)

Have you tried:

header("Cache-Control: no-cache, must-revalidate"); 
header("Pragma: no-cache");
header("Expires: Sun, 1 Mar 2015 00:00:00 GMT");  
header("Cache-Control: max-age=0");`

Or if you could use a POST link. Rather than <a href="page.php">>Link Text</a>

<form action="page.php" method="post"><button>Link Text</button></form>

Upvotes: 1

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