How can the use of var_dump($_POST) help in troubleshooting issues with form data not being received in PHP?

When form data is not being received in PHP, using var_dump($_POST) can help troubleshoot the issue by displaying the contents of the $_POST superglobal array. This allows you to see what data is being sent from the form and identify any potential issues such as incorrect field names or missing values.

// Troubleshoot form data not being received
var_dump($_POST);