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POProblem with codeigniter's redirect function
 

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  1. POProblem with codeigniter's redirect function
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    <p>This may be a n00b topic but, anyways, I have been having a rather difficult and strange time with this bug. Basically I was working on a controller method for a page that displays a form. Basically, I was debugging the form's submitted data by var dumping the form input using codeigniter's <code>$this-&gt;input-&gt;post</code> function like so: </p> <pre><code>var_dump($this-&gt;input-&gt;post('first_name')); </code></pre> <p>Every other day this has worked, but today I was finding that when I dumped post variables to the browser it would return false as if they had no values even though they did have values when I submitted the form. Then I tried accessing the variables through PHP's POST superglobal array directly like so:</p> <pre><code>var_dump($_POST['first_name']); </code></pre> <p>and that returned empty as well so then I tried dumping the entire post array like so:</p> <pre><code>var_dump($_POST); </code></pre> <p>and it was empty as well despite the fact that I filled out the entire form. Nevertheless, the records in my MySQL database were being updated (which means that the form was submitting even though my $_POST variables appeared empty). </p> <p>Also, I reasoned that normally, if I var dumped variables in the controller function before a redirect function call that it should give me a 'Headers already sent' error but it never did. It just redirected me to the supposed success page instead of dumping my variables. </p> <p>So for the about 2 hours I thought that my POST data wasn't being sent and re-checked the code for errors and began commenting out statements one by one until I could find the culprit statement in my script.</p> <p>Finally, I commented out a chunk of code that sets a success message an redirects, like so:</p> <pre><code>/* if($record_updated_successfully) { $this-&gt;session-&gt;set_flashdata('success', $this-&gt;lang-&gt;line('record-updated-successfully')); } redirect('admin/success_page'); */ </code></pre> <p>and only then did the script start dumping out all my previous variable dumps using codeigniter's <code>$this-&gt;input-&gt;post</code> function as well as the <code>$_POST</code> superglobal array.</p> <p>So ok, if the script does indeed redirect me despite the variable dumps sending output before headers are sent then I can see why the $_POST variables would appear empty.</p> <p>So then the real question is why the script would still redirect despite my sending of output before headers are sent? Has anyone ever experienced this?</p> <p>Any help with this would be appreciated.</p> <p>EDIT: with respect to loading the view here's a simplified version of my script looks like with the debugging var dump statements:</p> <pre><code>function some_controller_method() { var_dump($this-&gt;input-&gt;post()); var_dump($_POST); // some code if($this-&gt;input-&gt;post('form_action') == 'update record') { // code that runs when the form is submitted /* * ... */ if($record_updated_successfully) { $this-&gt;session-&gt;set_flashdata('success', $this-&gt;lang-&gt;line('record-updated-successfully')); } redirect('admin/success_page'); } $this-&gt;load-&gt;view('my-view-file.php'); } </code></pre>
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