如何使switch语句不区分大小写？

Question

In the following example, sometimes $var can be "Value", "value" or even "VALUE".

switch ( $var ) {
    case "value":
        // Value and VALUE don't seem to match here.
        break;
}

The comparison seems to be case sensitive (only the all-lowercase "value" matches). Is there a way to perform a case-insensitive comparison?

Ref: http://php.net/manual/en/control-structures.switch.php

Answer 1

$var = strtolower($var)

And then in the switch cases write all lowercase