In the context of PHP, how can the print_r($_POST) function be used to troubleshoot form submission and data transmission issues?

When troubleshooting form submission and data transmission issues in PHP, the print_r($_POST) function can be used to display the contents of the $_POST superglobal array, which contains data submitted through a form using the POST method. This can help identify any missing or incorrect form field names, values, or data formatting issues that may be causing problems with data transmission. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    print_r($_POST);
    // Additional troubleshooting steps can be added here
}
?>

Keywords

PHP print_r $_POST form submission data transmission

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