How can PHP developers effectively troubleshoot and debug issues related to external server interactions?

When troubleshooting and debugging issues related to external server interactions in PHP, developers can use tools like error logs, network monitoring tools, and debugging extensions like Xdebug. They can also check for errors in the code related to the server interaction, ensure proper error handling, and validate input and output data. 

// Example code snippet for debugging external server interactions
// Set up error reporting and logging
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

// Sample code for making a request to an external server
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://example.com/api');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);

// Check for errors in the request
if($response === false){
    echo 'Error: ' . curl_error($ch);
}

// Close the cURL session
curl_close($ch);

Keywords

cURL HTTP headers error logs Xdebug network requests

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