How can PHP developers effectively debug their code to identify and resolve issues like session problems?

To effectively debug session problems in PHP, developers can start by checking if session_start() is called before any output is sent to the browser. They can also verify if the session variables are being set and accessed correctly. Additionally, developers can use tools like var_dump() or print_r() to inspect session data and track the flow of the session. 

<?php
session_start();

// Set session variables
$_SESSION['username'] = 'john_doe';
$_SESSION['email'] = 'john.doe@example.com';

// Access session variables
$username = $_SESSION['username'];
$email = $_SESSION['email'];

// Debug session data
var_dump($_SESSION);

Keywords

Xdebug var_dump error_reporting session_start $_SESSION

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