How can PHP sessions be leveraged to track and manage errors in a multi-step data processing workflow?

When processing data in multiple steps, it can be challenging to track and manage errors that occur along the way. One way to address this is by using PHP sessions to store error messages at each step of the workflow. By storing error messages in session variables, you can easily display them to the user or log them for further analysis. 

<?php

// Start the session
session_start();

// Step 1: Process data
if ($error_condition_step1) {
    $_SESSION['error_step1'] = 'Error message for step 1';
}

// Step 2: Process data
if ($error_condition_step2) {
    $_SESSION['error_step2'] = 'Error message for step 2';
}

// Step 3: Process data
if ($error_condition_step3) {
    $_SESSION['error_step3'] = 'Error message for step 3';
}

// Display or log errors
if (isset($_SESSION['error_step1'])) {
    echo $_SESSION['error_step1'];
}
if (isset($_SESSION['error_step2'])) {
    echo $_SESSION['error_step2'];
}
if (isset($_SESSION['error_step3'])) {
    echo $_SESSION['error_step3'];
}

// Clear session errors
unset($_SESSION['error_step1']);
unset($_SESSION['error_step2']);
unset($_SESSION['error_step3']);

?>

Keywords

PHP sessions error tracking multi-step workflow data processing error management

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