allow shebang in PSR1 Files/SideEffectsSniff

Author: claylo

CodeSniffer/Standards/PSR1/Sniffs/Files/SideEffectsSniff.php

@@ -119,6 +119,11 @@ private function _searchForConflict(PHP_CodeSniffer_File $phpcsFile, $start, $en
                 continue;
             }
 
+            // Ignore shebang.
+            if (substr($tokens[$i]['content'], 0, 2) === '#!') {
+                continue;
+            }
+
             // Ignore entire namespace, declare, const and use statements.
             if ($tokens[$i]['code'] === T_NAMESPACE
                 || $tokens[$i]['code'] === T_USE

CodeSniffer/Standards/PSR1/Tests/Files/SideEffectsUnitTest.7.inc

@@ -0,0 +1,8 @@
+#!/usr/bin/env php
+<?php
+
+//some code
+function foo()
+{
+    return 'bar';
+}