Thank you!
When I first went to here: https://www.php.net/manual/en/timezones.america.php I assumed I would need an abbreviation.
Actually there is not an abbreviation. I was thinking since I was replacing UTC, there would be another abbreviation but it is actually like this:
America/Los_Angeles or whatever timezone- all spelled out.
<?php
date_default_timezone_set('America/Los_Angeles');
$script_tz = date_default_timezone_get();
if (strcmp($script_tz, ini_get('date.timezone'))){
echo 'Script timezone differs from ini-set timezone.';
} else {
echo 'Script timezone and ini-set timezone match.';
}
?>