PHP Manual: Start xhprof profiler

Description

void xhprof_enable(int $flags = 0, array $options = ?)

Start xhprof profiling.

Parameters

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.

Return Values

null

Changelog

Version	Description
PECL xhprof 0.9.2	The optional `options` parameter was added.

Examples

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')));
?>

xhprof_enable

Description

Parameters

Return Values

Changelog

Examples

See Also