PHP CLI won't log errors

Question

PHP currently will not log errors produced from the command line.

I have :

log_errors = On
error_log = /var/log/php_errors.log

in

Answer 1

in PHP file

error_log("You messed up!", 3, "/var/tmp/my-errors.log");

in terminal

tail -f /var/tmp/my-errors.log

output You messed up!