我如何检查 php 参数来自哪里？

Question

I'm code reviewing php code and checked the parameters given with

$params = $_GET;
var_dump($params);

//result
array(5) {
  ["date"]=>
  string(10) "2020-02-03"
  ["flag"]=>
  string(0) ""
  ["target"]=>
  string(1) "0"
  ["anorher_flag"]=>
  string(1) "1"
  ["url"]=>
  string(20) "foo/bar/sth/"
}

I want to check where that 'url' parameter is come from. Where was it passed from. But the code/structure is too long and confusing to find where the 'url' is.. (and since url is very common name, over 300result search with 'url'..)

Is there any useful command or function to check where specific parameter passed from?

Answer 1

You can see from $_SERVER variable.

$_SERVER['SCRIPT_URI']

You will get the complete URL from where Data is Posted