diff --git a/feature_any_float.go b/feature_any_float.go
index ad037b8..47350f8 100644
--- a/feature_any_float.go
+++ b/feature_any_float.go
@@ -42,7 +42,10 @@ func (any *floatAny) ToInt64() int64 {
 }
 
 func (any *floatAny) ToUint() uint {
-	return uint(any.val)
+	if any.val > 0 {
+		return uint(any.val)
+	}
+	return uint(-any.val)
 }
 
 func (any *floatAny) ToUint32() uint32 {
diff --git a/feature_any_object.go b/feature_any_object.go
index dd2bf41..6e51295 100644
--- a/feature_any_object.go
+++ b/feature_any_object.go
@@ -29,67 +29,35 @@ func (any *objectLazyAny) ToBool() bool {
 }
 
 func (any *objectLazyAny) ToInt() int {
-	if any.ToBool() {
-		return 1
-	} else {
-		return 0
-	}
+	return 0
 }
 
 func (any *objectLazyAny) ToInt32() int32 {
-	if any.ToBool() {
-		return 1
-	} else {
-		return 0
-	}
+	return 0
 }
 
 func (any *objectLazyAny) ToInt64() int64 {
-	if any.ToBool() {
-		return 1
-	} else {
-		return 0
-	}
+	return 0
 }
 
 func (any *objectLazyAny) ToUint() uint {
-	if any.ToBool() {
-		return 1
-	} else {
-		return 0
-	}
+	return 0
 }
 
 func (any *objectLazyAny) ToUint32() uint32 {
-	if any.ToBool() {
-		return 1
-	} else {
-		return 0
-	}
+	return 0
 }
 
 func (any *objectLazyAny) ToUint64() uint64 {
-	if any.ToBool() {
-		return 1
-	} else {
-		return 0
-	}
+	return 0
 }
 
 func (any *objectLazyAny) ToFloat32() float32 {
-	if any.ToBool() {
-		return 1
-	} else {
-		return 0
-	}
+	return 0
 }
 
 func (any *objectLazyAny) ToFloat64() float64 {
-	if any.ToBool() {
-		return 1
-	} else {
-		return 0
-	}
+	return 0
 }
 
 func (any *objectLazyAny) ToString() string {
diff --git a/feature_any_string.go b/feature_any_string.go
index e76c275..f91846a 100644
--- a/feature_any_string.go
+++ b/feature_any_string.go
@@ -49,32 +49,69 @@ func (any *stringAny) ToBool() bool {
 }
 
 func (any *stringAny) ToInt() int {
-	parsed, _ := strconv.ParseInt(any.val, 10, 64)
-	return int(parsed)
+	return int(any.ToInt64())
+
 }
 
 func (any *stringAny) ToInt32() int32 {
-	parsed, _ := strconv.ParseInt(any.val, 10, 32)
-	return int32(parsed)
+	return int32(any.ToInt64())
 }
 
 func (any *stringAny) ToInt64() int64 {
-	parsed, _ := strconv.ParseInt(any.val, 10, 64)
-	return parsed
+	if any.val == "" {
+		return 0
+	}
+
+	flag := 1
+	startPos := 0
+	endPos := 0
+	if any.val[0] == '+' || any.val[0] == '-' {
+		startPos = 1
+	}
+
+	if any.val[0] == '-' {
+		flag = -1
+	}
+
+	for i := startPos; i < len(any.val); i++ {
+		if any.val[i] >= '0' && any.val[i] <= '9' {
+			endPos = i + 1
+		} else {
+			break
+		}
+	}
+	parsed, _ := strconv.ParseInt(any.val[startPos:endPos], 10, 64)
+	return int64(flag) * parsed
 }
 
 func (any *stringAny) ToUint() uint {
-	parsed, _ := strconv.ParseUint(any.val, 10, 64)
-	return uint(parsed)
+	return uint(any.ToUint64())
 }
 
 func (any *stringAny) ToUint32() uint32 {
-	parsed, _ := strconv.ParseUint(any.val, 10, 32)
-	return uint32(parsed)
+	return uint32(any.ToUint64())
 }
 
 func (any *stringAny) ToUint64() uint64 {
-	parsed, _ := strconv.ParseUint(any.val, 10, 64)
+	if any.val == "" {
+		return 0
+	}
+
+	startPos := 0
+	endPos := 0
+	// uint skip flag, is this correct?
+	if any.val[0] == '+' || any.val[0] == '-' {
+		startPos = 1
+	}
+
+	for i := startPos; i < len(any.val); i++ {
+		if any.val[i] >= '0' && any.val[i] <= '9' {
+			endPos = i + 1
+		} else {
+			break
+		}
+	}
+	parsed, _ := strconv.ParseUint(any.val[startPos:endPos], 10, 64)
 	return parsed
 }
 
diff --git a/jsoniter_any_int_test.go b/jsoniter_any_int_test.go
index b19f4f9..647b01b 100644
--- a/jsoniter_any_int_test.go
+++ b/jsoniter_any_int_test.go
@@ -1,11 +1,108 @@
 package jsoniter
 
 import (
-	"github.com/json-iterator/go/require"
+	"fmt"
 	"io"
 	"testing"
+
+	"github.com/json-iterator/go/require"
 )
 
+var intConvertMap = map[string]int{
+	"321.1":      321,
+	"-321.1":     -321,
+	`"1.1"`:      1,
+	`"-1.1"`:     -1,
+	"0.0":        0,
+	"0":          0,
+	`"0"`:        0,
+	`"0.0"`:      0,
+	"-1.1":       -1,
+	"true":       1,
+	"false":      0,
+	`"true"`:     0,
+	`"false"`:    0,
+	`"true123"`:  0,
+	`"123true"`:  123,
+	`"1.2332e6"`: 1,
+	`""`:         0,
+	"+":          0,
+	"-":          0,
+	"[]":         0,
+	"[1,2]":      1,
+	// object in php cannot convert to int
+	"{}": 0,
+}
+
+func Test_read_any_to_int(t *testing.T) {
+	should := require.New(t)
+
+	// int
+	for k, v := range intConvertMap {
+		any := Get([]byte(k))
+		should.Equal(v, any.ToInt(), fmt.Sprintf("origin val %v", k))
+	}
+
+	// int32
+	for k, v := range intConvertMap {
+		any := Get([]byte(k))
+		should.Equal(int32(v), any.ToInt32(), fmt.Sprintf("original val is %v", k))
+	}
+
+	// int64
+	for k, v := range intConvertMap {
+		any := Get([]byte(k))
+		should.Equal(int64(v), any.ToInt64(), fmt.Sprintf("original val is %v", k))
+	}
+
+}
+
+var uintConvertMap = map[string]int{
+	"321.1":      321,
+	`"1.1"`:      1,
+	`"-1.1"`:     1,
+	"0.0":        0,
+	"0":          0,
+	`"0"`:        0,
+	`"0.0"`:      0,
+	"true":       1,
+	"false":      0,
+	`"true"`:     0,
+	`"false"`:    0,
+	`"true123"`:  0,
+	`"123true"`:  123,
+	`"1.2332e6"`: 1,
+	`""`:         0,
+	"+":          0,
+	"-":          0,
+	"[]":         0,
+	"[1,2]":      1,
+	"{}":         0,
+	// TODO need to solve
+	//"-1.1":       1,
+	//"-321.1": 321,
+}
+
+func Test_read_any_to_uint(t *testing.T) {
+	should := require.New(t)
+
+	for k, v := range uintConvertMap {
+		any := Get([]byte(k))
+		should.Equal(uint64(v), any.ToUint64(), fmt.Sprintf("origin val %v", k))
+	}
+
+	for k, v := range uintConvertMap {
+		any := Get([]byte(k))
+		should.Equal(uint32(v), any.ToUint32(), fmt.Sprintf("origin val %v", k))
+	}
+
+	for k, v := range uintConvertMap {
+		any := Get([]byte(k))
+		should.Equal(uint32(v), any.ToUint32(), fmt.Sprintf("origin val %v", k))
+	}
+
+}
+
 func Test_read_int64_as_any(t *testing.T) {
 	should := require.New(t)
 	any := Get([]byte("1234"))
diff --git a/jsoniter_any_object_test.go b/jsoniter_any_object_test.go
index 4c85f4d..fbd3bb4 100644
--- a/jsoniter_any_object_test.go
+++ b/jsoniter_any_object_test.go
@@ -1,8 +1,9 @@
 package jsoniter
 
 import (
-	"github.com/json-iterator/go/require"
 	"testing"
+
+	"github.com/json-iterator/go/require"
 )
 
 func Test_read_object_as_any(t *testing.T) {
@@ -18,7 +19,7 @@ func Test_read_object_as_any(t *testing.T) {
 	should.Equal(2, len(any.Keys()))
 	should.Equal(2, any.Size())
 	should.True(any.ToBool())
-	should.Equal(1, any.ToInt())
+	should.Equal(0, any.ToInt())
 	should.Equal(Object, any.ValueType())
 	should.Nil(any.LastError())
 	should.Equal("b", any.GetObject()["a"].ToString())