PHP列表函数的可选参数

2022-01-20 00:00:00 arrays tuples php

我的代码中有这样一行:

I have a line like this in my code:

list($user_id, $name, $limit, $remaining, $reset) = explode('|', $user);

最后 3 个参数可能存在也可能不存在.如果数组小于预期，是否有类似于 list 的函数会自动忽略那些最后的参数?

The last 3 parameters may or may not be there. Is there a function similar to list that will automatically ignore those last parameters if the array is smaller than expected?

推荐答案

只需在字符串末尾添加一些备用管道即可:

Just add some spare pipes to the end of the string:

list($user_id, $name, $limit, $remaining, $reset) = explode('|', $user.'||||');

问题解决了.

注意:如果您正在加载任意以竖线分隔的数据，您可能需要使用 str_getcsv() 函数而不是 explode().

Note: If you're loading arbitrary pipe-delimited data, you might want to use str_getcsv() function rather than explode().

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