Returnin not match string in a webpage using PHP
<p>i need a code/function to show a not match value of a webpage</p>

<p>example i use curl to get $x1 to $x4 content:</p>

<pre><code>      $x1 =' www.sample/index1.php'

      $x2 = 'www.sample/index2.php'

      $x3 = 'www.sample/index3.php'

      $x4 = 'www.sample/index4.php'
</code></pre>

<p>so what i need is only the not match string content in those from $x1 to $x4</p>

<p>any assistance? thanks</p>
