title: verify existence of a file that starts with a name chosen in a folder. (PHP)
body: <p>I have a folder called <code>myfiles</code> ( <code>c/myfiles</code>), and I want to verify if within this folder is contained a file that begins with the name <code>filesearch_</code>.</p>
  
  <p><strong>In C: directory I have:</strong></p>
  
  <pre><code>files.txt
  filesearch_232142.xls  //TRUE in this case
  filesearch_12.pdf   //TRUE in this case
  fdsf.php
  </code></pre>
  
  <p>Searching <code>filesearch_</code> the result should be <code>true</code>. If not, it should be <code>false</code>. I have researched <code>glob</code>, but do not understand how to put a <code>glob</code> pattern function.</p>