PHP memory_limit locked to 256MB?
<p>I am trying to set memory_limit to 512M, but it's locekd to 256M.</p>

<pre><code>ini_set('memory_limit','512M');
ini_get('memory_limit');    //&gt; Returns: 256M
</code></pre>

<p>I have full control on my server. (it's a dedicated)</p>

<p>Please note that everything under 512M works.</p>

<pre><code>ini_set('memory_limit','16M');
ini_get('memory_limit');    //&gt; Returns: 16M
</code></pre>

<h2>Solution</h2>

<p>I found out why. in php.ini I had <code>memory_limit = 256M</code>. Maybe this is considered as an upper limit</p>
