Find the location of a function in PHP

Square dimension O2OV4 For example ：

$funcName="getMConfig"; // The name of the function to find

Reflection::export(new ReflectionFunction($funcName));

give the result as follows ：

Function [ <user> function getMConfig ] {
  @@ H:\IIS_PHP\FanWeV4\system\common.php 4285 - 4409
}