最快的PHP相当于javascript`var a = var1 || var2 || var3;`expression

Question

Firstly is there a name for this expression ?

Javascript

var value = false || 0 || '' || !1 || 'string' || 'wont get this far';

value equals string (string) aka the fifth option

PHP

$value = false || 0 || '' || !1 || 'string' || 'wont get this far';

$value equals true (bool)

Am I right in thinking the correct way to achieve the same result as JavaScript is by nesting ternary operators? What is the best solution ?

Answer 1

The equivalent operator in PHP is ?:, which is the ternary operator without the middle part:

$value = false ?: 0 ?: '' ?: !1 ?: 'string' ?: 'wont get this far';

$a ?: $b is shorthand for $a ? $a : $b.