isset short way  [ 44 views ]

How we can check if variable is defined or if not than get a default value? The general answer is isset and ternary operator

$myVar = isset($_SESSION["variableName"]) ? $_SESSION["variableName"] : 'defaultValue';

let’s simplify this!

$myVar = isset($_SESSION["variableName"]) ?: 'defaultValue';

or after PHP 7.0.1 you can use this shorter way

$myVar = $_SESSION["variableName"] ?? 'defaultValue';
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