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copied!<p>Things to check for in <code>php.ini</code>:</p> <ul> <li><code>post_max_size</code> # should be different from 0</li> <li><code>variables_order</code> # should be = "EGPCS"</li> <li><code>max_input_vars</code> # should be higher than the number of variables you pass</li> </ul> <p>Things to check for in the HTML form:</p> <ul> <li>the fields and submit button are inside the form</li> <li>the form has <code>method="POST"</code></li> <li>if the form has files, check the enctype, it should be <code>multipart/form-data</code>, if not it should be <code>application/x-www-form-urlencoded</code></li> <li>Look for <code><input type="hidden" name="MAX_FILE_SIZE" value="..." /></code> - is it big enough ? </li> </ul> <p>If all are fine, check if <a href="http://www.howtoforge.com/apache_mod_security" rel="nofollow noreferrer">mod_security</a> is enabled, and also check .htaccess for things like <code>RewriteCond %{REQUEST_METHOD} POST</code>, and the rule after it.</p> <p>Check if your browser sends the data. In Chrome network tab I see something like this:</p> <p><img src="https://i.stack.imgur.com/7a7gB.png" alt="enter image description here"> </p> <hr> <p>You can also try the following:</p> <pre><code>var_dump(get_defined_vars()); </code></pre> <p>or</p> <pre><code>$vars = get_defined_vars(); foreach ($vars as $var) { echo "<br><b>{$var}</b>"; var_dump($$var); } </code></pre> <p>and check the list of declared variables.</p> <p><strong>PS:</strong></p> <p>I presumed that you use Apache, since you <strong>didn't include this info</strong>. Also, try a different browser, and see if it changes anything.</p> <p><strong>PS2:</strong> I like to check config settings in the command line with:</p> <pre><code>~$ php -i | grep -i variables_order variables_order => GPCS => GPCS </code></pre>

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