How can PHP developers troubleshoot issues with form submission using JavaScript onload?

When troubleshooting issues with form submission using JavaScript onload, PHP developers can check if the form is being submitted properly by using the `$_POST` superglobal array to access form data. They can also use `var_dump($_POST)` to print out the form data and see if it is being passed correctly. Additionally, they can inspect the JavaScript code that is handling the form submission to ensure it is functioning as expected. 

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    var_dump($_POST); // Print out form data for debugging
    // Additional PHP code to process form data
}
?>

Keywords

PHP JavaScript form submission troubleshooting onload event

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