函数名称（$ param，$ line = __LINE__，$ file = __FILE__）{}; [英] function name($param, $line = __LINE__, $file = __FILE__) {};

问题描述

是否有可能让一个函数自动包含行号和函数被调用的文件，

Is it possible to have a function automatically contain the line number and the file that the function was CALLED in,

好像我调用 __LINE __ 或 __ FILE __ 在函数中它将使用函数定义所在的行和文件。

as if i call __LINE__ or __FILE__ in the function it will use the line and file the function definition is in.

但我不希望每次都要将 __ LINE __ 和 __ FILE __ 传递给函数。

but i dont want to have to pass __LINE__ and __FILE__ into the function every time.

所以如果我将它们设置为默认参数，它们是来自函数定义还是来自它的调用？

so if i set them as the default params, do they come from the function definition, or where it is being called from?

推荐答案

唯一的方法是使用 debug_backtrace（） ，但正如名称所示：它用于调试。您的代码应不根据调用的地点/时间在生产中附加任何意义或功能。

The only way would be using debug_backtrace(), but as the name says: it is for debugging. Your code should not attach any meaning or functionality in production based on where/when it's called.

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