function - PHP - if (condition) execution -


let's have this:

if(1 == 0 && do_stuff()) {     ... }

obviously 1 not 0, there's no point check other condition. php ever run do_stuff() ?

no - php uses lazy evaluation (sometimes called short-circuit evaluation), if first condition in logical , false, won't attempt evaluate of other conditions.

likewise, if doing or , first condition true wouldn't evaluate second.


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