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PHP xhprof_enable

PHP original manual for xhprof_enable [ show | php.net ]

xhprof_enable

(PECL xhprof >= 0.9.0)

xhprof_enable — 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
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')));
?>

See Also