PHP - 评估IF语句的最佳实践

if ($condition) {
    // do something
}

if ($a == $b) {
    // do something
}

$result = $condition ? $value1 : $value2;

switch ($variable) {
    case 'value1':
        // do something
        break;
    case 'value2':
        // do something else
        break;
    default:
        // do the default action
}

$value = $variable ?? $defaultValue;

if ($condition1 && $condition2) {
    // do something
}

if ($condition1 || $condition2) {
    // do something else
}

if ($condition1) {
    if ($condition2) {
        // do something
    }
}

if ($condition1 && $condition2) {
    // do something
}