cd xhprof/extension/
phpize
./configure 
makemake install

extension=xhprof.so

php -m | grep xhprof

Array
(    [main()] => Array        (            [ct] => 1            [wt] => 9        ))
---------------Assuming you have set up the http based UI for 
XHProf at some address, you can view run at 
http://<xhprof-ui-address>/index.php?run=592567308784c&source=xhprof_foo
---------------

xhprof_html/index.php?run=592567308784c&source=xhprof_foo

failed to execute cmd：" dot -Tpng". stderr：sh： dot：command not found。

//解决方案yum install graphviz

// start profiling
xhprof_enable();

// stop profiler
$xhprof_data = xhprof_disable();

// display raw xhprof data for the profiler run
print_r($xhprof_data);


include_once "xhprof_lib.php";
include_once "xhprof_runs.php";

// save raw data for this profiler run using default
// implementation of iXHProfRuns.
$xhprof_runs = new XHProfRuns_Default();

// save the run under a namespace "xhprof_foo"
$run_id = $xhprof_runs->save_run($xhprof_data, "xhprof_foo");

echo "---------------\n".
     "Assuming you have set up the http based UI for \n".
     "XHProf at some address, you can view run at \n".
     "http://<xhprof-ui-address>/index.php?run=$run_id&source=xhprof_foo\n".
     "---------------\n";

http://***/xhprof_html/index.php?run=*****&source=xhprof_foo