How can the ternary operator be used to handle situations where a session variable may or may not be set in PHP?

When dealing with session variables that may or may not be set in PHP, we can use the ternary operator to check if the variable is set and assign a default value if it is not. This allows us to handle both scenarios in a concise and readable way. 

// Check if the session variable is set, if not, assign a default value
$variable = isset($_SESSION['variable']) ? $_SESSION['variable'] : 'default_value';

// Now $variable will contain the value of $_SESSION['variable'] if it is set, or 'default_value' if not

Keywords

ternary operator session variable isset PHP error handling

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