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$qn=["1",["2021-08-31"],["2022-08-31"],"2",["2021-08-31"],["2022-08-31"],"3",["2021-08-31"],["2022-08-31"],["2021-08-31"],["2022-08-31"],["2021-08-31"],["2022-08-31"],["2021-08-31"],["2022-08-31"],"17","18","15","22","23","30","10"]
上面这个数据库里的字符串,
我想让他生成二维数组
请问应该怎么操作呀。
$qx1= explode(",",$qn);
只能生成一次
谢谢