Re: [PHP-DEV] Re: [RFC][DISCUSSION] Match expression v2

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June 23, 2020 12:09 rowan.collins@gmail.com (Rowan Tommins)
On Tue, 23 Jun 2020 at 09:54, Björn Larsson larsson@telia.com>
wrote:

> > Ok, thanks for the clarification. The reason for me to bring > this up is that I was pondering on if this is the only place in > PHP where a semicolon is required after a curly bracket > when not used in an expression. >
Two things: - as proposed here, match is *always* an expression; it just happens that PHP lets you throw away the result of an expression, so "match($x){};" is a valid statement for the same reason "42;" is a valid statement - as Ilija mentioned, ending a statement with an anonymous function also leads to the combination "};" function returnsFunc() { return function() { echo "Hello, world!\n"; }; } function returnsMatchResult($x) { return match($x) { 1=> "Hello", 2=>"world" }; } I'd also note that while there aren't currently many cases where it would be ambiguous whether a statement or expression was intended, new ones might be added in future. For instance, post-fix conditionals (like in Perl and Ruby) would give us match($x) { ... } if $condition; This kind of syntax short-cut tends to end up with complex rules of "it's optional except when it's not", which I'm personally not a fan of. Regards, -- Rowan Tommins [IMSoP]