(PECL xhprof >= 0.9.0)
xhprof_enable — Start xhprof profiler
$flags = 0
[, array $options
]] )Start xhprof profiling.
flags
Optional flags to add additional information to the profiling. See the
XHprof constants for further
information about these flags, e.g., XHPROF_FLAGS_MEMORY
to enable memory profiling.
options
An array of optional options, namely, the 'ignored_functions' option to pass in functions to be ignored during profiling.
NULL
| 版本 | 说明 |
|---|---|
| 0.9.2 |
The optional options parameter was added.
|
Example #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')));
?>