if / else用于定义变量的简写

Question

I have troubles understanding how the php shorthands for if/else described here works.

<?=(expression) ? $foo : $bar?>

The expression I'm trying to shorten is the following :

if (isset($result[1][0])) {
    $var = $result[1][0];
} else {
    $var = "";
}

Can somebody explain me how I can apply the shorthand if/else statement in my situation ?

Thank you !

Answer 1

You can use ternary operator like this:

$var = (isset($result[1][0])) ? $result[1][0] : "";

See more about Ternary Operator

In case of PHP 7, you can do it like this:

$var = $result[1][0] ?? ''

Hope this helps!