PHP to Go

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How to convert from PHP to Go

Converting from PHP to Go is a process that requires a solid understanding of not just both languages but also their specific paradigms and constructs. This guide will help you navigate the conversion process by providing clear, detailed explanations and examples.

Understanding the Differences

Before diving into the conversion process, it’s paramount to understand the differences between PHP and Go.

PHP is a dynamically typed language primarily used for web development. It boasts a large ecosystem and an easy to understand syntax. Go, on the other hand, is a statically typed, compiled language designed for concurrency and performance.

Setting Up Your Go Environment

First and foremost, you must set up your Go environment if it's not already installed. You can download and install Go from its official website. Once installed, set your GOPATH and ensure your workspace is correctly configured.

Basic Syntax Differences

Data Types and Variables: In PHP, you declare variables with the $ sign, and types are dynamically inferred:

$number = 10;
$string = "Hello, World!";

In Go, variables are declared with explicit types using the var keyword or shorthand using the := operator for type inference:

var number int = 10
string := "Hello, World!"


In PHP, function declarations are straightforward:

function add($a, $b) {
    return $a + $b;

Go requires explicit type declarations for function parameters and return types:

func add(a int, b int) int {
    return a + b

Note that Go does not use a return statement to end function scope; code simply proceeds out of scope.

Control Structures

If Statements: PHP:

if ($a > $b) {
    echo "A is greater than B";


if a > b {
    fmt.Println("A is greater than B")

Go omits parentheses around the condition.



for ($i = 0; $i < 10; $i++) {
    echo $i;


for i := 0; i < 10; i++ {

Go uses only one loop construct (for), which can act as a traditional for-loop, a while-loop, or an infinite loop.

Working with Arrays and Slices

Arrays and slices are handled differently in Go compared to PHP.

PHP Array:

$numbers = array(1, 2, 3, 4);

Go array and slice:

var numbers = [4]int{1, 2, 3, 4}     // Array
var slice = []int{1, 2, 3, 4}        // Slice

Arrays have a fixed size whereas slices are dynamic.

Handling Web Requests

Handling web requests in Go requires the net/http package, which is different from PHP’s built-in web server capabilities.


echo $_GET['param'];


import (

func handler(w http.ResponseWriter, r *http.Request) {
    param := r.URL.Query().Get("param")
    fmt.Fprintf(w, param)

func main() {
    http.HandleFunc("/", handler)
    http.ListenAndServe(":8080", nil)

Go requires you to explicitly manage routing and response writing.

Object Oriented Programming

PHP has a robust OOP system with classes and inheritance. Converting OOP code from PHP to Go requires understanding Go's struct-based approach and interface system.


class Dog {
    public $name;
    function __construct($name) {
        $this->name = $name;

    function bark() {
        echo "Woof!";


type Dog struct {
    Name string

func (d Dog) Bark() {

func NewDog(name string) Dog {
    return Dog{Name: name}

Go does not have classes but uses structs to achieve similar functionality.

Error Handling

Unlike PHP, Go does not use exceptions. Instead, it relies on explicit error checking.


throw new Exception("Something went wrong.");


import "errors"

func mightGoWrong() error {
    return errors.New("Something went wrong")

Errors are returned as values in Go.


Converting from PHP to Go may seem daunting, but with a clear understanding of both languages' principles and syntax, it becomes an achievable task. Whether you're porting a small script or a large application, this guide should serve as a robust starting point for your journey from PHP to Go.

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