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'); ?>
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