How can developers troubleshoot PHP scripts that are not displaying expected output despite modifications?

If a PHP script is not displaying the expected output despite modifications, developers can troubleshoot by checking for syntax errors, ensuring all variables are properly defined and initialized, and verifying that the correct functions and logic are being used. Additionally, debugging tools like error logs and var_dump can help identify the root cause of the issue. 

<?php
// Check for syntax errors
error_reporting(E_ALL);
ini_set('display_errors', 1);

// Ensure variables are properly defined and initialized
$variable = "value";

// Verify correct functions and logic
if ($variable == "value") {
    echo "Expected output";
} else {
    echo "Unexpected output";
}
?>

Keywords

debugging error reporting var_dump PHP functions troubleshooting

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