php:确定从何处调用函数
php:确定从何处调用函数
提问于 2010-06-03 03:09:35
有没有办法找出PHP中的函数是从哪里被调用的？示例：
function epic()
{
fail();
}
function fail()
{
//at this point, how do i know, that epic() has called this function?
}回答 7
Stack Overflow用户
发布于 2010-06-03 03:13:01
function fail()
{
$backtrace = debug_backtrace();
// Here, $backtrace[0] points to fail(), so we'll look in $backtrace[1] instead
if (isset($backtrace[1]['function']) && $backtrace[1]['function'] == 'epic')
{
// Called by epic()...
}
}Stack Overflow用户
发布于 2016-09-16 15:54:40
据我所知，最快最简单的解决方案
public function func() { //function whose call file you want to find
$trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 1);
}
$trace: Array
(
[0] => Array
(
[file] => C:\wamp\www\index.php
[line] => 56
[function] => func
[class] => (func Class namespace)
[type] => ->
)
)我在联想笔记本电脑上测试了速度:英特尔奔腾CPU N3530 2.16 the，内存8 8GB
global $times;
$start = microtime(true);
$trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 1);
$times[] = microtime(true) - $start;结果：
count($times): 97
min: 2.6941299438477E-5
max: 10.68115234375E-5
avg: 3.3095939872191E-5
median: 3.0517578125E-5
sum: 321.03061676025E-5
the same results with notation without E-5
count($times): 97
min: 0.000026941299438477
max: 0.0001068115234375
avg: 0.000033095939872191
median: 0.000030517578125
sum: 0.0032103061676025Stack Overflow用户
发布于 2012-06-21 16:13:43
因此，如果你仍然不知道怎么做，那么这里有一个解决方案：
$backtrace = debug_backtrace();
echo 'Mu name is '.$backtrace[1]['function'].', and I have called him! Muahahah!';页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/2960805
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