How can the error log be useful in troubleshooting PHP code after an upgrade?

The error log can be useful in troubleshooting PHP code after an upgrade by providing detailed information about any errors or warnings that occur during the execution of the code. This can help developers identify the specific issues that need to be addressed in order to ensure compatibility with the new version of PHP. By reviewing the error log, developers can pinpoint the exact location of the problem in the code and make the necessary adjustments to resolve it. 

// Enable error logging
ini_set('log_errors', 1);
ini_set('error_log', '/path/to/error.log');

// Your PHP code here

Keywords

error log troubleshooting PHP code upgrade debugging

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