How can using an array instead of a switch statement improve performance in PHP code?

Using an array instead of a switch statement can improve performance in PHP code because arrays allow for direct access to elements based on keys, while switch statements involve sequential evaluation of cases. This means that as the number of cases increases, the switch statement's performance may degrade, whereas an array lookup remains constant time. By storing the case values as keys in an array and their corresponding actions as values, we can achieve better performance in scenarios where multiple conditions need to be evaluated. 

// Using an array instead of a switch statement for improved performance
$actions = [
    'case1' => function() {
        // Action for case 1
    },
    'case2' => function() {
        // Action for case 2
    },
    // Add more cases as needed
];

$selectedCase = 'case1'; // Example case to execute

if (array_key_exists($selectedCase, $actions)) {
    $actions[$selectedCase]();
} else {
    // Handle default case or error
}

Keywords

array switch statement performance PHP code optimization

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