PHP question mark

Question

$hideCode = $likesObj->isAlreadyLikedByUser(facebookUID()) ? \'style=\"display:none;\"\' : \'\';

Can anyone explain to me what that question mar

Answer 1

This is the simple if-then-else type logic:

(condition) ? (if-true-value) : (if-false-value)

so in your case, the condition is checked (i.e. has the page already been liked by the user); if yes (true condition), then style="display:none;" is printed so that whatever the element you're using is not displayed. Otherwise, an empty string is printed, which is the equivalent of not printing anything at all, naturally.