an><span style="color: #007700">=</span><span style="color: #0000BB">0</span><span style="color: #007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="color: #0000BB">$this</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">_output</span><span style="color: #007700">=</span><span style="color: #DD0000">"&lt;?php&nbsp;/*&nbsp;source&nbsp;file:&nbsp;</span><span style="color: #0000BB">$sourceFile</span><span style="color: #DD0000">&nbsp;*/&nbsp;?&gt;\n"</span><span style="color: