8/23/2023 0 Comments Php isset w3schools![]() ![]() The following returns false because the $count variable has not been declared: 'blue'] Note that you’ll learn about the arrow function syntax in the later tutorial. Var_dump($isset($count)) // false Code language: PHP ( php ) The following example will result in an error: isset($var) Therefore, you cannot assign it to a variable, return it from a function, or call it dynamically via a variable function. The isset() is a language construct, not a function. ![]() isset(mixed $var): bool Code language: PHP ( php ) PHP isset() returns true if a variable is set and not null. Introduction to the PHP isset() construct
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