PHP, How to get the name of the running function?

Question

I'm using an error log function and I want to include the function where the error occurred during the error log. Is there a way to write the function instead of writing the function every time?

<?php 

$a = null;

exampleFunction($a);

function exampleFunction($variable){

  if(is_null($variable)){

    errorLog("variable is null. Function : exampleFunction()");

  }

}

function errorLog($text){

 error_log($text, 3, ".testLog");

}

?>

__FUNCTION__ is not solution. If I use __FUNCTION__ I get "errorLog". I want to know the name of the function that is running errorLog.

For example ;

function errorLog($text){

  error_log($text.' Function : '.$functionName, 3, ".testLog");

}

As in the linked answer: in your errorLog function you could reference: `debug_backtrace()[1]['function']`. — Progrock, Jan 14 '19 at 03:01
I missed it. This solution worked. Thank you so much. @Progrock — Yusuf Y., Jan 14 '19 at 04:38

score 1 · Answer 1 · answered Jan 14 '19 at 01:21

Yes, you can use the __FUNCTION__ constant. It's _ _ (2 underscores) "function" _ _ (2 underscores)

function whatever($stuff){
echo "The function name is " . __FUNCTION__;
}

If you want to take it a step further, if it's in a class...

echo "The class name is " . __CLASS__ . " and the function is " . __FUNCTION__;

score 0 · Answer 2 · answered Jan 14 '19 at 01:21

0

For that, you can use the magic constant __FUNCTION__

answered Jan 14 '19 at 01:21

asiby

3,229
29
32

lol. Writing the double underscore in here is tricky. They turn the text in bold if they are not escaped. – asiby Jan 14 '19 at 01:23
You can also use the code tag to make the \_\_UNDERSCORES\_\_ not cause a bold text. – Nerdi.org Jan 14 '19 at 01:27

PHP, How to get the name of the running function?

2 Answers2