xhprof_enable
(PECL xhprof >= 0.9.0)
xhprof_enable — Start xhprof profiler
Описание
void xhprof_enable
([ int
$flags = 0
[, array $options
]] )Start xhprof profiling.
Список параметров
-
flags -
Optional flags to add additional information to the profiling. See the XHprof constants for further information about these flags, e.g.,
XHPROF_FLAGS_MEMORYto enable memory profiling. -
options -
An array of optional options, namely, the 'ignored_functions' option to pass in functions to be ignored during profiling.
Возвращаемые значения
NULL
Список изменений
| Версия | Описание |
|---|---|
| 0.9.2 |
The optional options parameter was added.
|
Примеры
Пример #1 xhprof_enable() examples
<?php
// 1. elapsed time + memory + CPU profiling; and ignore built-in (internal) functions
xhprof_enable(XHPROF_FLAGS_NO_BUILTINS | XHPROF_FLAGS_CPU | XHPROF_FLAGS_MEMORY);
// 2. elapsed time profiling; ignore call_user_func* during profiling
xhprof_enable(
0,
array('ignored_functions' => array('call_user_func',
'call_user_func_array')));
// 3. elapsed time + memory profiling; ignore call_user_func* during profiling
xhprof_enable(
XHPROF_FLAGS_MEMORY,
array('ignored_functions' => array('call_user_func',
'call_user_func_array')));
?>
Смотрите также
- xhprof_disable() - Stops xhprof profiler
- xhprof_sample_enable() - Start XHProf profiling in sampling mode
- memory_get_usage() - Возвращает количество памяти выделенной PHP
- getrusage() - Получает информацию об использовании текущего ресурса
Коментарии
<?php
// You can optionally profile CPU time and/or memory usage:
xhprof_enable(XHPROF_FLAGS_CPU + XHPROF_FLAGS_MEMORY);