make special case for __halt_compiler()

Author: Sijun Zhu

src/Standards/Generic/Sniffs/PHP/ForbiddenFunctionsSniff.php

@@ -74,15 +74,24 @@ public function register()
 
         // If we are not pattern matching, we need to work out what
         // tokens to listen for.
-        $tokens = [];
+        $string = '<?php ';
+        $hasHaltCompiler = false;
         foreach ($this->forbiddenFunctionNames as $name) {
-            $token = token_get_all(sprintf('<?php %s();', $name));
-            array_shift($token);
-            $tokens = array_merge($tokens, $token);
+            if ($name === '__halt_compiler') {
+                $hasHaltCompiler = true;
+            } else {
+                $string .= $name.'();';
+            }
+        }
+
+        if ($hasHaltCompiler) {
+            $string .= '__halt_compiler();';
         }
 
         $register = [];
 
+        $tokens = token_get_all($string);
+        array_shift($tokens);
         foreach ($tokens as $token) {
             if (is_array($token) === true) {
                 $register[] = $token[0];