added php cli samples

samples/PHP/php-script.script!

@@ -0,0 +1,4 @@
+#!/usr/bin/php
+<?php
+
+echo "PHP\n";

samples/PHP/php.script!

@@ -0,0 +1,4 @@
+#!/usr/bin/env php
+<?php
+
+echo "PHP\n";

test/test_tokenizer.rb

@@ -94,6 +94,7 @@ class TestTokenizer < Test::Unit::TestCase
     assert_equal "SHEBANG#!ruby", tokenize(:"Ruby/ruby.script!")[0]
     assert_equal "SHEBANG#!ruby", tokenize(:"Ruby/ruby2.script!")[0]
     assert_equal "SHEBANG#!node", tokenize(:"JavaScript/js.script!")[0]
+    assert_equal "SHEBANG#!php", tokenize(:"Php/php.script!")[0]
   end
 
   def test_javascript_tokens