How can the issue of a variable not being found after submitting a form in PHP be resolved?

Issue: The variable may not be found after submitting a form in PHP due to scope issues. To resolve this, ensure that the variable is properly defined and initialized before the form submission, and use the $_POST superglobal to retrieve form data after submission. 

<?php
// Check if form is submitted
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Retrieve form data using $_POST
    $variable = $_POST['form_input_name'];
    
    // Use the variable as needed
    echo $variable;
}
?>

<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
    <input type="text" name="form_input_name">
    <input type="submit" value="Submit">
</form>

Keywords

PHP form submission variable scope global keyword error handling

Related Questions