Fix php hightlight (#3317)

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

runtime/queries/php/highlights.scm

@@ -8,6 +8,14 @@
 (named_type (name) @type) @type
 (named_type (qualified_name) @type) @type
 
+(namespace_definition
+  name: (namespace_name (name) @namespace))
+
+; Superglobals
+(subscript_expression
+  (variable_name(name) @constant.builtin
+    (#match? @constant.builtin "^_?[A-Z][A-Z\\d_]+$")))
+
 ; Functions
 
 (array_creation_expression "array" @function.builtin)
@@ -17,7 +25,7 @@
   name: (name) @function.method)
 
 (function_call_expression
-  function: (qualified_name (name)) @function)
+  function: (_) @function)
 
 (scoped_call_expression
   name: (name) @function)
@@ -28,6 +36,7 @@
 (function_definition
   name: (name) @function)
 
+
 ; Member
 
 (property_element
@@ -67,52 +76,54 @@
 
 ; Keywords
 
-"abstract" @keyword
+[
-"as" @keyword
+  "abstract" 
-"break" @keyword
+  "as" 
-"case" @keyword
+  "break" 
-"catch" @keyword
+  "case" 
-"class" @keyword
+  "catch" 
-"const" @keyword
+  "class" 
-"continue" @keyword
+  "const" 
-"declare" @keyword
+  "continue" 
-"default" @keyword
+  "declare" 
-"do" @keyword
+  "default" 
-"echo" @keyword
+  "do" 
-"else" @keyword
+  "echo" 
-"elseif" @keyword
+  "else" 
-"enddeclare" @keyword
+  "elseif" 
-"endforeach" @keyword
+  "enddeclare" 
-"endif" @keyword
+  "endforeach" 
-"endswitch" @keyword
+  "endif" 
-"endwhile" @keyword
+  "endswitch" 
-"enum" @keyword
+  "endwhile" 
-"extends" @keyword
+  "enum" 
-"final" @keyword
+  "extends" 
-"finally" @keyword
+  "final" 
-"foreach" @keyword
+  "finally" 
-"fn" @keyword
+  "foreach" 
-"function" @keyword
+  "fn" 
-"global" @keyword
+  "function" 
-"if" @keyword
+  "global" 
-"implements" @keyword
+  "if" 
-"include_once" @keyword
+  "implements" 
-"include" @keyword
+  "include_once" 
-"insteadof" @keyword
+  "include" 
-"interface" @keyword
+  "insteadof" 
-"match" @keyword
+  "interface" 
-"namespace" @keyword
+  "match" 
-"new" @keyword
+  "namespace" 
-"private" @keyword
+  "new" 
-"protected" @keyword
+  "private" 
-"public" @keyword
+  "protected" 
-"require_once" @keyword
+  "public" 
-"require" @keyword
+  "require_once" 
-"return" @keyword
+  "require" 
-"static" @keyword
+  "return" 
-"switch" @keyword
+  "static" 
-"throw" @keyword
+  "switch" 
-"trait" @keyword
+  "throw" 
-"try" @keyword
+  "trait" 
-"use" @keyword
+  "try" 
-"while" @keyword
+  "use" 
+  "while" 
+] @keyword