fix(php): anchoring of functions

internal/languages/php/.snapshots/TestPattern-anonymous_function_names_and_bodies_are_unanchored

@@ -0,0 +1,11 @@
+(*builder.Result)({
+  Query: (string) (len=100) "([(anonymous_function_creation_expression  [ (formal_parameters )] [ (compound_statement )])] @root)",
+  VariableNames: ([]string) {
+  },
+  ParamToVariable: (map[string]string) {
+  },
+  EqualParams: ([][]string) <nil>,
+  ParamToContent: (map[string]map[string]string) {
+  },
+  RootVariable: (*language.PatternVariable)(<nil>)
+})

internal/languages/php/.snapshots/TestPattern-function_names_and_bodies_are_unanchored

@@ -0,0 +1,12 @@
+(*builder.Result)({
+  Query: (string) (len=91) "([(function_definition  name: (_) [ (formal_parameters )] [ (compound_statement )])] @root)",
+  VariableNames: ([]string) (len=1) {
+    (string) (len=1) "_"
+  },
+  ParamToVariable: (map[string]string) {
+  },
+  EqualParams: ([][]string) <nil>,
+  ParamToContent: (map[string]map[string]string) {
+  },
+  RootVariable: (*language.PatternVariable)(<nil>)
+})

internal/languages/php/.snapshots/TestPattern-parameter_names_are_unanchored

@@ -1,5 +1,5 @@
 (*builder.Result)({
-  Query: (string) (len=234) "([(class_declaration  . name: (_) . [(declaration_list  [(method_declaration [ (visibility_modifier )]  name: (_) . [(formal_parameters  . [(simple_parameter . type: (_) name: (_) @match)] . )] [ (compound_statement )])] )] .)] @root)",
+  Query: (string) (len=232) "([(class_declaration  . name: (_) . [(declaration_list  [(method_declaration [ (visibility_modifier )]  name: (_) [(formal_parameters  . [(simple_parameter . type: (_) name: (_) @match)] . )] [ (compound_statement )])] )] .)] @root)",
   VariableNames: ([]string) (len=1) {
     (string) (len=1) "_"
   },

internal/languages/php/pattern/pattern.go

@@ -171,15 +171,19 @@ func (*Pattern) IsAnchored(node *tree.Node) (bool, bool) {
 		return false, true
 	}
 
-	if parent.Type() == "method_declaration" {
+	if slices.Contains([]string{
+		"method_declaration",
+		"function_definition",
+		"anonymous_function_creation_expression",
+	}, parent.Type()) {
 		// visibility
 		if node == parent.ChildByFieldName("name") {
 			return false, true
 		}
 
 		// type
-		if node == parent.ChildByFieldName("parameters") {
-			return true, false
+		if node == parent.ChildByFieldName("body") {
+			return false, true
 		}
 
 		return false, false

internal/languages/php/php_test.go

@@ -89,6 +89,12 @@ func TestPattern(t *testing.T) {
 		{"catch clauses and types are unanchored", `
 				try {} catch ($<_> $<!>$$<_>) {}
 		`},
+		{"function names and bodies are unanchored", `
+				function $<_>() {}
+		`},
+		{"anonymous function names and bodies are unanchored", `
+				function () {};
+		`},
 	} {
 		t.Run(test.name, func(tt *testing.T) {
 			result, err := patternquerybuilder.Build(php.Get(), test.pattern, "")