Question

在开始之前，我知道这是CSV，我知道有一个函数存在内置PHP。我有以下模式：

preg_match_all("/([^\"]|\"[^\"]*\")*?(r\n|\n\r|\r|\n)/i", $CSV, $Matches);

谁将解析类似的东西：

Country,Region/State,City,"Zip/Postal Code\n From","Zip/Postal Code To","Weight From","Weight To","Shipping Price","Delivery Type"\n\r
CAN,*,,,,0.0000,4999.0000,29.7500,Priority\n\r
CAN,*,,,,10000.0000,19999.0000,35.5000,Express\n\r
CAN,*,,,,0.0000,4999.0000,19.7500,Express\n\r
CAN,*,,,,20000.0000,99999999.9999,59.0000,Priority\n\r
CAN,*,,,,5000.0000,9999.0000,34.7500,Priority\n\r
CAN,*,,,,20000.0000,99999999.9999,41.5000,Express\n\r
CAN,*,,,,5000.0000,9999.0000,24.4500,Express\n\r
CAN,*,,,,10000.0000,19999.0000,48.0000,Priority\n\r
CAN,*,,,,10000.0000,19999.0000,29.7500,Standard\n\r
CAN,*,,,,20000.0000,99999999.9999,36.5000,Standard\n\r
CAN,*,,,,500.0000,9999.0000,20.3500,Standard\n\r
CAN,*,,,,90.0000,499.0000,9.7500,Standard\n\r
CAN,*,,,,50.0000,89.0000,1.8000,Standard\n\r
CAN,*,,,,30.0000,49.0000,1.5000,Standard\n\r
CAN,*,,,,0.0000,29.0000,1.0000,Standard\n\r
USA,*,,,,20000.0000,99999999.9999,160.0000,Express\n\r
USA,*,,,,10000.0000,14999.0000,76.0000,Express\n\r
USA,*,,,,1000.0000,4999.0000,42.0000,Express\n\r
USA,*,,,,15000.0000,19999.0000,155.0000,Priority\n\r
USA,*,,,,5000.0000,9999.0000,94.0000,Priority\n\r
USA,*,,,,0.0000,999.0000,75.5000,Priority\n\r
USA,*,,,,15000.0000,19999.0000,98.0000,Express\n\r
USA,*,,,,5000.0000,9999.0000,61.5000,Express\n\r
USA,*,,,,0.0000,999.0000,40.0000,Express\n\r
USA,*,,,,20000.0000,99999999.9999,230.0000,Priority\n\r
USA,*,,,,10000.0000,14999.0000,120.0000,Priority\n\r
USA,*,,,,1000.0000,4999.0000,61.5000,Priority\n\r
USA,*,,,,500.0000,999.0000,25.5000,Standard\n\r
USA,*,,,,90.0000,499.0000,13.3500,Standard\n\r
USA,*,,,,50.0000,89.0000,3.0000,Standard\n\r
USA,*,,,,30.0000,49.0000,1.8000,Standard\n\r
USA,*,,,,0.0000,29.0000,1.5000,Standard\n\r

我得到的结果类似于：

[2] => Array
    (
    )

[3] => Array
    (
        [0] => CAN
        [1] => *
        [2] => 
        [3] => 
        [4] => 
        [5] => 10000.0000
        [6] => 19999.0000
        [7] => 35.5000
    )

[4] => Array
    (
    )

[5] => Array
    (
        [0] => CAN
        [1] => *
        [2] => 
        [3] => 
        [4] => 
        [5] => 0.0000
        [6] => 4999.0000
        [7] => 19.7500
    )

[6] => Array
    (
    )

如果我尝试在换行符组中添加?:，它仍会执行此操作。任何人都可以帮助我，我被困在那里。感谢。

Answer 1

不知道php匹配的任何细节，我会接受你的说法正则表达式正如你所表明的那样（使用my preferred regex我没有以相同的方式捕获。）

我假设您正在尝试删除这些空白匹配。我还会相信这些“换行符”实际上已编码到输入中，而不是保留为文字\和\r和\n的。

问题似乎是“新线”正在匹配两次？就像你只匹配一遍的\n，然后下一遍的\r？

最简单的解决方案是将换行限制为您知道该文件的类型：/([^\"]|\"[^\"]*\")*?(\n\r)/ 这有帮助吗？

或者，我会在每行输入上使用正则表达式分割（用逗号分隔）。

正则表达式返回预期结果加上另一行的换行符

1 个答案: