7700">-&gt;</span><span style="color: #0000BB">append</span><span style="color: #007700">=</span><span style="color: #0000BB">$p</span><span style="color: #007700">!==</span><span style="color: #0000BB">$pattern</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$p</span><span style="color: #007700">=</span><span style="color: #0000BB">trim</span><span style="color: #007700">(</span><span style="color: #0000BB">$p</span><span style="color: #007700">,</span>