How can I log request and response XMLs in PHP

Suppose that the Request Xml, after being constructed, is stored in the variable - $requestXml, and Response XML, after retreival from eBay, is stored in $responseXml.

PHP provides a library function, error_log to log any strings to local log files, or default PHP error logs.

error_log(var_export($requestXml,true), 3, "/path/to/logFile.log");

// $requestXml - XML to be logged. var_export(with param- true), returns a parsable String representation of the variable, If the variable is not already a string.

// The param 3 - denotes message is appended to the file destination. A newline is not automatically added to the end of the message string.

Similarly, for logging response

error_log(var_export($responseXml,true), 3, "/path/to/request-response.log");

You can also email the logs and log the messages with different flags. Please see Official reference for more information.

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