Does "Notice" and "warnings" slow down a PHP script without reporting bugs?

Does "Notice" and "warnings" slow down a PHP script without reporting bugs?
SEMrush

I tested this once and the difference in execution time was negligible.
I'm still curious.

If error_reporting is set to zero and "Notice" errors are generated, is that important?

For example, this code generates NOTICE errors:


255, 'green'=>200, 'blue'=>100 );
echo $a(red).'
'; //Notice error echo $a('green').'
'; //notice error echo $a("blue").'
'; //no error ?>

Code (surcharge):