Answers for "length of array pkp"

size of an array c

int a[20];
int length;
length = sizeof(a) / sizeof(int);

get length of array in c

int a[17];
size_t n = sizeof(a)/sizeof(a[0]);

pkp

// Example usage for: Ternary Operator
$action = $_POST['action'] ?: 'default';

// The above is identical to this if/else statement
if (empty($_POST['action'])) {
    $action = 'default';
} else {
    $action = $_POST['action'];
}