diff --git a/Makefile b/Makefile
index db2c383..88be435 100644
--- a/Makefile
+++ b/Makefile
@@ -1,16 +1,20 @@
 PHPFILE=example.php
 
-all: ./php5/php5.go ./php7/php7.go ./scanner/scanner.go
-	rm -f y.output
-	gofmt -l -s -w *.go
+all: compile run
+
+build: 
+	gofmt -l -s -w **/*.go
 	go build
 
-run: all
+run: build
 	./php-parser $(PHPFILE)
 
 test: all
 	go test ./... --cover
 
+compile: ./php5/php5.go ./php7/php7.go ./scanner/scanner.go
+	rm -f y.output
+
 ./scanner/scanner.go: ./scanner/scanner.l
 	golex -o $@ $<
 
diff --git a/main.go b/main.go
index 35488fc..c24f112 100644
--- a/main.go
+++ b/main.go
@@ -8,11 +8,20 @@ import (
 	"path/filepath"
 
 	"github.com/yookoala/realpath"
+	"github.com/z7zmey/php-parser/comment"
+	"github.com/z7zmey/php-parser/node"
 	"github.com/z7zmey/php-parser/php5"
+	"github.com/z7zmey/php-parser/php7"
+	"github.com/z7zmey/php-parser/position"
 	"github.com/z7zmey/php-parser/visitor"
 )
 
 func main() {
+	var nodes node.Node
+	var comments comment.Comments
+	var positions position.Positions
+
+	usePhp5 := flag.Bool("php5", false, "use PHP5 parser")
 	flag.Parse()
 
 	for _, path := range flag.Args() {
@@ -24,7 +33,11 @@ func main() {
 				fmt.Printf("==> %s\n", path)
 
 				src, _ := os.Open(string(path))
-				nodes, comments, positions := php5.Parse(src, path)
+				if *usePhp5 {
+					nodes, comments, positions = php5.Parse(src, path)
+				} else {
+					nodes, comments, positions = php7.Parse(src, path)
+				}
 
 				visitor := visitor.Dumper{
 					Indent:    "  | ",
diff --git a/php5/lexer.go b/php5/lexer.go
index fa55a16..0f848af 100644
--- a/php5/lexer.go
+++ b/php5/lexer.go
@@ -12,15 +12,15 @@ import (
 )
 
 type lexer struct {
-    scanner.Lexer
+	scanner.Lexer
 }
 
 func (l *lexer) Lex(lval *yySymType) int {
-    return l.Lexer.Lex(lval)
+	return l.Lexer.Lex(lval)
 }
 
 func (lval *yySymType) Token(t token.Token) {
-    lval.token = t
+	lval.token = t
 }
 
 func newLexer(src io.Reader, fName string) *lexer {
diff --git a/php7/lexer.go b/php7/lexer.go
index 02dfd5f..e452c93 100644
--- a/php7/lexer.go
+++ b/php7/lexer.go
@@ -12,15 +12,15 @@ import (
 )
 
 type lexer struct {
-    scanner.Lexer
+	scanner.Lexer
 }
 
 func (l *lexer) Lex(lval *yySymType) int {
-    return l.Lexer.Lex(lval)
+	return l.Lexer.Lex(lval)
 }
 
 func (lval *yySymType) Token(t token.Token) {
-    lval.token = t
+	lval.token = t
 }
 
 func newLexer(src io.Reader, fName string) *lexer {
diff --git a/php7/parser.go b/php7/parser.go
index ec04bb5..739bd18 100644
--- a/php7/parser.go
+++ b/php7/parser.go
@@ -16,14 +16,14 @@ var positions position.Positions
 var positionBuilder position.Builder
 
 func Parse(src io.Reader, fName string) (node.Node, comment.Comments, position.Positions) {
-    yyDebug        = 0
-    yyErrorVerbose = true
-    rootnode = stmt.NewStmtList([]node.Node{}) //reset
-    comments = comment.Comments{}
-    positions = position.Positions{}
-    positionBuilder = position.Builder{&positions}
-    yyParse(newLexer(src, fName))
-    return rootnode, comments, positions
+	yyDebug = 0
+	yyErrorVerbose = true
+	rootnode = stmt.NewStmtList([]node.Node{}) //reset
+	comments = comment.Comments{}
+	positions = position.Positions{}
+	positionBuilder = position.Builder{&positions}
+	yyParse(newLexer(src, fName))
+	return rootnode, comments, positions
 }
 
 func ListGetFirstNodeComments(list []node.Node) []comment.Comment {
@@ -37,16 +37,16 @@ func ListGetFirstNodeComments(list []node.Node) []comment.Comment {
 }
 
 type foreachVariable struct {
-    node  node.Node
-    byRef bool
+	node  node.Node
+	byRef bool
 }
 
 type nodesWithEndToken struct {
-    nodes []node.Node
-    endToken token.Token
+	nodes    []node.Node
+	endToken token.Token
 }
 
 type boolWithToken struct {
-    value bool
-    token *token.Token
-}
\ No newline at end of file
+	value bool
+	token *token.Token
+}