What is the meaning of the "?" in this statement in php

Question

function countproduct(){
        $count = 0;
        $cart = isset($_SESSION['cart']) ? $_SESSION['cart']:array();
        foreach($cart as $row):
            if($row['qty']!=0){
                $count = $count + 1;
            }
        endforeach;

        return $count;

i want to know whats the meaning of ? after the isset($_SESSION['cart'])

[Ternary operator](https://davidwalsh.name/php-ternary-examples) — Andrei, Dec 05 '17 at 10:35
All it took to find the duplicate was typing “php statement question mark” into Google. Please do some proper research next time. — CBroe, Dec 05 '17 at 10:38

score 1 · Accepted Answer · answered Dec 05 '17 at 10:38

It's a ternary operator, these line:

$cart = isset($_SESSION['cart']) ? $_SESSION['cart']:array();

Can be transformed to:

if (isset($_SESSION['cart'])) {
    $cart = $_SESSION['cart'];
} else {
    $cart = array();
}

For more information you can check php operations documentation

What is the meaning of the "?" in this statement in php

1 Answers1