PHP中的逻辑赋值运算符

Question

There doesn't seem to be a logical assignment operator in PHP. I would like to be able to write $a = $a || $b as $a ||= $b.

Note that this is not the same as $a |= $b, which does not short-circuit when $a evaluates to true.

Is there such functionality in PHP?

Answer 1

PHP doesn't appear to have this functionality. There is nothing in the Assignment Operator documentation or in the Logical Operators documentation that mentions this functionality. Also, it isn't included in the top rated comment on the Assignment Operator page, which is a list that someone compiled of all of the assignment operators from information in the other pages.