include or required
<p>What should I use in the following statement? Include or required. </p>

<pre><code>if(a ==b){
 require 'requiredfile.php';
} else {
 require 'requiredfile_2.php'
}
</code></pre>

<p>If in a function, I know that one, either include or require, only includes the file when called, the other one will include the file regardless. Am I correct? </p>
