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POPHP Session Behaviour
 

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    <p>I've got a questionnaire with some fields checking (written on PHP + HTML). So i send data over https.</p> <p>It works like this</p> <pre><code>&lt;form id="frm_order" method="post" action="https://site/service_for_businesses" autocomplete="off"&gt; &lt;input name="username" id="username" size="40" maxlength="500" type="text" value=""&gt; &lt;button name="Submit" id="Submit" value="Отправить" type="submit" onclick="return final_check();"&gt;&lt;/button&gt; &lt;/form&gt; </code></pre> <p>After a user clicks Submit Button all the data is moved to $_SESSION['params'] and then is passed to HELPER class where this data is being checked. If everything is ok then a user is redirected to "SUCCESS PAGE" (this part works fine), but if there is any mistakes in USER's data from the form fields then $_SESSION[..] is passed to VIEW-controller and the page is refreshed and warnings appear near form fields where there is a mistake. The problem is that there is a strange behaviour like this:</p> <p>1) i wrote some data, for example i wrote down a username "Mi%^XS"<br> 2) pressed Submit<br> 3) there is an error in checking data, cause users are not allowed to use special symbols so there is a redirect<br> 4) i saw a page with my wrong username and a warning below<br> 5) i did nothing but just pressed SUBMIT -> redirect<br> 6) i got empty fields with no warnings<br> 7) i pressed SUBMIT -> redirect<br> 8) i got the same thing as in the step 4 -my username with warnings<br> etc</p> <p>i cannot understand why.</p> <p>My website is deployed to 2 web-servers (to avoid DdoS) with balancer. It's like there are 2 session with the same ID on both of the servers </p>
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    1. COfinally i solved the problem. It appeared that there are 2 extra servers with nginx which act as proxy. So i edited its config files and the problem solved.
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