title: Check if multiple conditions are not true php
body: <p>I want to check if multiple conditions are true/false with php.
  So I have </p>
  
  <pre><code>$a = 'hello';
  </code></pre>
  
  <p>In the below I expect to return false as a does = hello</p>
  
  <pre><code>var_dump(($a !== 'hello'));
  bool(false)
  </code></pre>
  
  <p>this works as expected,</p>
  
  <p>however If I try and ad an or in as shown below it returns true.</p>
  
  <pre><code>var_dump(($a !== 'hello')||($a !== 'bye'));
  bool(true)
  </code></pre>
  
  <p>Why is this and how can I structure this so that I get false?</p>