在 PHP 7.4 中报错：Cannot redeclare getFirstSkuIndex() 的解决，设置为静态匿名函数，且赋值给变量

[2023-01-09 10:28:00] local.ERROR: Cannot redeclare getFirstSkuIndex() (previously declared in E:\wwwroot\object\storage\framework\views\f7c14c1d27c4ea3f4d0e1c60a5009bfe9a47c438.php:7) {
    "exception": "[object] (Symfony\\Component\\Debug\\Exception\\FatalErrorException(code: 64): Cannot redeclare getFirstSkuIndex() (previously declared in E:\\wwwroot\\object\\storage\\framework\\views\\f7c14c1d27c4ea3f4d0e1c60a5009bfe9a47c438.php:7) at E:\\wwwroot\\object\\storage\\framework\\views\\f7c14c1d27c4ea3f4d0e1c60a5009bfe9a47c438.php:7)
[stacktrace]
#0 {main}
"
} 

function getFirstSkuIndex ($product) {
  // ...
}

return getFirstSkuIndex($product);

$getFirstSkuIndex = static function ($product) {
  // ...
};

return $getFirstSkuIndex($product);