stop executing and back to beginning
<pre><code>&lt;?php
function a(){ $variable= 'random string'; }


a();


if(file_exists($variable)){
 stop executing and start over again from function a;
}

function b(){ do something }


b();
</code></pre>

<p>question: how can I stop script and tell it to redo the whole process, go back to function a and run.</p>
