How can PHP developers effectively troubleshoot and debug issues related to PHP scripts interacting with external libraries, such as the CurrencyConverter.php file mentioned in the thread?

To troubleshoot and debug issues related to PHP scripts interacting with external libraries like CurrencyConverter.php, PHP developers can start by checking for any error messages or warnings. They can also use debugging tools like Xdebug or var_dump to inspect variables and function outputs. Additionally, reviewing the documentation of the external library and ensuring that the correct parameters are being passed can help resolve the issue. 

// Example code snippet to troubleshoot and debug CurrencyConverter.php script

// Include the CurrencyConverter.php file
require_once 'CurrencyConverter.php';

// Instantiate the CurrencyConverter class
$converter = new CurrencyConverter();

// Check for any errors or warnings
if (!$converter) {
    echo "Error: Unable to instantiate CurrencyConverter class";
    exit;
}

// Use var_dump to inspect variables and function outputs
var_dump($converter->convertCurrency('USD', 'EUR', 100));

// Ensure correct parameters are being passed

Keywords

PHP debugging troubleshooting external libraries CurrencyConverter.php

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