PHP Conditional Assignment Operators The PHP conditional assignment operators are used to set a value depending on conditions: Operator Name Example Result ?: Ternary $x = expr1 ? expr2 : expr3 Returns the value of $x. The value of $x is expr2 if expr1 = TRUE. The value of $x is expr3 if expr1 = FALSE ?? Null coalescing $x = expr1 ?? expr2 Returns the value of $x. The value of $x is expr1 if expr1 exists, and is not NULL. If expr1 does not exist, or is NULL, the value of $x is expr2 . Introduced in PHP 7 <!DOCTYPE html> <html> <body> <?php // if empty($user) = TRUE, set $status = "anonymous" echo $status = (empty($user)) ? "anonymous" : "logged in"; echo("<br>"); $user = "John Doe"; // if empty($user) = FALSE, set $status = "logged in" echo ...