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php 对空数组元素??并进行运算，可能触发 Undefined index 错误
摘要：对空数组元素??并进行运算，可能触发 Undefined index 错误 $TotalGb = $TotalGroupBrand[$brandNameEn] ?? []; $quantity = $TotalGb['stock'] ?? 0 + $TotalGb['unshipped_qty'] 阅读全文
posted @ 2024-11-29 17:13 pine007 阅读(96) 评论(0) 推荐(0)