If you've ever tried to optimize PHP code, sometimes finding the bottlenecks can be pretty difficult without the use of a really good debugger available for PHP. The purpose of this script is to provide a method of showing where a script spends most of its time.
By : jinxidoru
<?
/**
* The best way to use this script is to place
* it in a separate file, say: watcher.php.
* At the top of the file you want to profile,
* include watcher.php and follow the include
* with the statement:
* declare(ticks=1);
*
* At the end of the script, call watch_function_output()
* to see the results. The value returned in
* the output for each function call is the
* number of system ticks spent in each given
* function/method. These ticks relate to
* the number of lower-level operations the
* PHP engine must perform. For more information,
* check the php.net documentation under
* declare() or contact me:
* Michael Bailey "jinxidoru@byu.net"
*
* You are welcome to use this code to any end,
* be it for good or evil. Though, if it be for
* evil, I'd be interested in knowing what you're
* doing for the sake of curiousity.
*/
// tick function for watching functions
// if $ret_funcs is true, a tick is not registered,
// but instead, the function list is returned.
function watch_functions_tick($ret_funcs=false) {
static $funcs = array();
// do tick
if (!$ret_funcs) {
// get the current function from debug_backtrace
$trace = debug_backtrace();
$trace = $trace[1];
$func = $trace['function'];
if ($trace['class']) $func = $trace['class'].$trace['type'].$func;
// as long as the given function is a valid one, add it to the array
if ($func !== 'watch_functions_tick' && $func != 'unknown' && $func) {
$funcs[$func]++;
$funcs['__TICK_COUNT__']++;
}
// return the function array
} else {
return $funcs;
}
}
// output the function list with the number of ticks each
// function received as well as the percentage of the total
// ticks it represents
function watch_functions_output() {
// retrieve the function list
$funcs = watch_functions_tick(true);
$tick_count = $funcs['__TICK_COUNT__'];
arsort($funcs);
// add the percentage onto each function entry
foreach ($funcs AS $k => $v) {
$funcs[$k] = sprintf('%d (%.2f%%)', $funcs[$k], $funcs[$k]*100/$tick_count);
}
// display the function list
print "<pre>";
print_r($funcs);
print "</pre>";
}
// start the ticking
register_tick_function('watch_functions_tick');
?>
| DISCLAIMER: The content provided in this article is not warranted or guaranteed by Developer Shed, Inc. The content provided is intended for entertainment and/or educational purposes in order to introduce to the reader key ideas, concepts, and/or product reviews. As such it is incumbent upon the reader to employ real-world tactics for security and implementation of best practices. We are not liable for any negative consequences that may result from implementing any information covered in our articles or tutorials. If this is a hardware review, it is not recommended to open and/or modify your hardware. |
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