The writer for xhprof files is implemented in lib/xhprofWriter.php. It exposes 2 functions:

function web3tracer_xhprofWrite($data,$filename=null,$path=null)

Writes xhprof format files to read with the xhprof web tools.

Parameters:

$data - is the data returned by the web3tracer_disable() function

$filename - is the name of the file to be written. If null, a name is automatically generated in the form 2013-05-24-12-59-03.xhprof.xhprof

$path - Directory in which to write the file. If null, current directory is used.

Return value:

true on success, false on failure (file is not writable)

function ​​​​​​​web3tracer_xhprofConvert($data)

Converts data from the format returned by web3tracer_disable() to the same format returned by the xhprof_disable() function. Use this function as a connector between web3tracer and your xhprof enabled scripts.

Parameters:

$data - is the data returned by the web3tracer_disable() function

Return value:

An array identical to the one generated by XHProf, but fully processed in the web3tracer manner (eg. with cycle detection).