php 如何把 set_error_handler 裡面的錯誤參數拿到外面用？

Question

function myErrorHandler($errno, $errstr, $errfile, $errline) { switch ($errno) { case E_USER_WARNING: $errno = "USER_WARNING"; break; case E_USER_NOTICE: $errno = "USER_NOTICE"; break; case E_NOTICE: $errno = "NOTICE"; break; case E_WARNING: $errno = "WARNING"; break; case E_RECOVERABLE_ERROR: $errno = "RECOVERABLE_ERROR"; break; case E_ALL: $errno = "ALL"; break; default: $errno = "Unknown Error Type"; break; } return true; } set_error_handler("myErrorHandler"); 我要怎麼把 errno errstr errfile errline取出來function外面用啊？

Answer 1

可以结合try...catch...去使用

 $trace = (new \Exception())->getTrace()[0];
echo '<br>文件号：'.$trace['file'].':'.$trace['line'];