multiple value (or) in php variable is possible?-CodePudding

is possible multiple value in php variable with condition (or). such as like this

$shippingCost = $selectedShipping['cost'] || null;

I've tried but it gives return error

result

CodePudding user response：

We use ternary operators to assign values to parameter when there are conditions to check. otherwise you can simply use if else conditions as well

using ternary operator 

$shippingCost = isset($selectedShipping['cost']) ? $selectedShipping['cost'] : null

using if,else

$shippingCost = 0;
if(isset($selectedShipping['cost'])){
  $shippingCost = $selectedShipping['cost'];
}

CodePudding user response：

if I recall correctly, ternary operator (?:) tries to find if the value is truthy or falsy, so if it is not set, it will return an error or a warning.

What you are looking for, is passing a value depending on if its set or not.

Back in old times we've had isset($array['key']) or array_key_exists for the senior guys, however right now what you can do is use a null coalescing operator - ??.

$array['key'] ?? null - this will return whatever is under that key in the array, or null if its undefined.