Re: [RFC] Implicit isset() in Shorthand Ternary Operator

Pete Boere wrote (on 18/09/2014):

I'm seeing '??' as analogous to the way JS developers use '||', and I use that all the time when writing JS.

Actually, JS's || is more analogous to the existing ?: operator, because it checks for truthiness, not definedness (!empty() rather than isset(), in PHP terms). PHP: echo false ?: "" ?: 0 ?: "default"; JS: console.log( false || "" || 0 || "default" ); The behaviour around undefined variables is a bit different, but that's a property of JS as a language, not any suppression by the || operator (console.log(x) with undefined x is an error; console.log(x.y) with x as an empty object is not). -- Rowan Collins [IMSoP]