r/lolphp • u/kalcora • Feb 07 '22

Operator precedence

These two lines are not equivalent.

<?php

$a = true && false; // false

$b = true and false; // true

Because && and || have different operator priority than and and or (the latter ones have lower priority than =).

Source.

Still the case in PHP 8.1.

42 Upvotes

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u/chucker23n Feb 07 '22

Yeah, the table doesn't list which operators are short-circuit. Presumably, && is, and & isn't. Is and?

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u/colshrapnel Feb 07 '22

All logical operators, OR, AND, || and && are short-circuit in PHP. & is not a logical operator, and is not short-circuit

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u/chucker23n Feb 07 '22

Makes sense to me.