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PONested output buffering with external class dependencies [please help]
 

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  1. PONested output buffering with external class dependencies [please help]
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    <p>Thanks in advance for any and all advice.</p> <p>I have one file (content file) where an array is created like so:</p> <pre><code>$config['plugins']['BannerRotate'] = array( 'container' =&gt; 'abroadView', 'arrows' =&gt; true, 'auto' =&gt; true, 'speed' =&gt; '15000', 'width' =&gt; '300px', 'height' =&gt; '220px', 'tags' =&gt; 'slider' ); </code></pre> <p>Which in turn is picked up by the so-called 'template system' and the layout is rendered with the page (and that array) as the argument (pretty standard).</p> <p>That array is then used by the template system to generate a new object like so:</p> <pre><code>if(isset($GLOBALS['config']['plugins'])){ foreach($GLOBALS['config']['plugins'] as $plugin =&gt; $ary){ $$plugin = new Ispweb_Plugindaemon(CURRENTSRV,getcwd().'/', $GLOBALS['config']['plugins'][$plugin],$plugin); // this statement is simply the result of the eval statement below } } </code></pre> <p>So then, since the name of the plugin in this case is BannerRotate, the object is $BannerRotate (variable variable). I'm doing this so I can have multiple plugin objects per page. This object is then used to call the jQuery plugin using member function $BannerRotate->getJS(). These member function calls are located WITHIN the templating system (IMPORTANT).</p> <p>If I call a member function inside the same file as the initial array [OUTSIDE THE TEMPLATING SYSTEM] (the file that I'm buffering in order to create the object in the first place), everything dies. This doesn't make sense to me because if I var_dump($BannerRotate), I get a full object. However, say in that content file I do $BannerRotate->printNoscript(), everything disappears and the object is never created. I then get a fatal error that I'm calling a member function of a non-object. THAT IS THE PROBLEM.</p> <p>Here is what I'm doing within the templating system to buffer the content file (and create the object(s)):</p> <pre><code>ob_start(); include $core_page_content; // the content file (where initial array is) if(isset($GLOBALS['config']['plugins'])){ foreach($GLOBALS['config']['plugins'] as $plugin =&gt; $ary){ $ins[] = $plugin; } } $t = ob_get_contents(); ob_end_clean(); foreach($ins as $in){ $a = CURRENTSRV; // a,b,c,d are just making the eval statement more clean $b = getcwd().'/'; $c = array(); foreach($GLOBALS['config']['plugins'][$in] as $key =&gt; $value){ $c[$key] = $value; } $d = $in; eval("\$$in = new Ispweb_Plugindaemon(\"$a\",\"$b\",\$c,\"$d\");"); echo $$in; } include $core_page_content; $page_content = ob_get_contents(); ob_end_clean(); </code></pre> <p>Does anyone know why I can access the object UNLESS I make a call to one of its member functions while inside the same file?</p> <p>What can I do?</p> <p>P.S. I know the setup is not ideal. There's nothing I can do about that.</p> <p>Thanks!</p> <p><strong>TL;DR</strong> I'm creating an object in file A, with a variable from file B. I buffer file B to get the parameters to feed to file A, create the object, print it into another buffer and include file B in that buffer as well. If file B has a function call to the presumably created object, I get a fatal error: call to member function of non-object.</p> <p>Additional Notes:</p> <p>File B:</p> <pre><code>$config['plugins']['BannerRotate'] = array( 'container' =&gt; 'abroadView', 'arrows' =&gt; true ); // page content (XHTML) </code></pre> <p>File A:</p> <pre><code>ob_start(); $core_page_content = 'file_b'; include $core_page_content; if(isset($config['plugins'])){ foreach($config['plugins'] as $plugin =&gt; $ary){ $ins[] = $plugin; } ob_end_clean(); foreach($ins as $in){ $$in = new Ispweb_Plugindaemon(CURRENTSRV,getcwd().'/',$config['plugins'][$in],$in); } include $core_page_content; $page_content = ob_get_contents(); ob_end_clean(); // later on in the file include 'top.htm'; include $page_content; include 'bot.htm'; </code></pre>
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    1. USwanovak
    1. USwanovak
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    1. COCan you post the code where you get the error, and indicate exactly where the error is thrown? Oh and `eval`-ing new objects into existence is just plain evil...
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    2. COYeah, I know eval is evil - I don't like using it. The code errors out if I do a $BannerRotate->printNoscript() inside file B (see TL;DR). And that's exactly where the error occurs - no object.
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      1. USwanovak
    3. COCan you post the code around it that's generating the error. Text descriptions mean very little... And you don't have to use eval... `$$in = new Ispweb_Plugindaemon($a, $b, $c, $d);` will work just fine (even though using variable variables is still pretty evil, but admittedly less evil than using `eval`)...
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      1. PONested output buffering with external class dependencies [please help]
      1. USircmaxell
 

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