Date: 2018nov9 Language: php Q. PHP: check for missing value in associative array A. If you expect that the lookup will succeed most of the time you can use @ in from of the array and check for null.

$n = @$totals[$name]; if ($n === null) $n = 0; print "Name $name is used $n times\n";

You can also use isset(), in_array(), array_search(), array_key_exists()