方括号中的HTML表单数组。只是传统的或与意义？ [英] Square brackets in HTML form arrays. Just conventional or with a meaning?
问题描述
我经常看到，特别是在PHP世界，下一个写，如果你想创建一个表单数组。
I frequently see, in particular in the PHP world, the following writing if you want to create a FORM array.
<input name="MyArray[]" />
<input name="MyArray[]" />
用方括号[]。尽管如此，提交操作只是传递相同的密钥输入两次。看来，[]仅仅是传统的很好的映射到PHP世界阵列，但你只获得同样的结果以下
with the square brackets []. Nevertheless, the submit operation just passes the same key entry twice. It appears that the [] is just conventional that maps nicely to the PHP world array, but you would obtain the same result with just the following
<input name="MyArray" />
<input name="MyArray" />
事实上，在Django我得到两个项的列表，无论使用何种风格。
Indeed, in django I get a list of two entries, regardless of the style used.
这是真的吗？是[]只是常规的，或者实际上有一个真正意义上把它从HTML和HTTP键/值信息？
Is this true ? Are the [] just conventional, or there's actually a real meaning into it from the HTML and HTTP key/value info ?
推荐答案
他们解决PHP的限制，不产生一个数组，如果自动与多个同名的值被提交，例如从一组复选框或多选。 （IIRC它只返回最后一个值。）
They address a limitation of PHP, which doesn't generate an array automatically if multiple values with the same name are submitted, for example from a set of checkboxes or a multiple select. (IIRC it only returns the last value.)
我个人一直认为它是一个pretty以次充好的解决方法。即使是经典ASP可以与应付，无需客户端增加的标记。服务器端平台没有经营这种方式在客户端上施加标记的要求。
Personally I've always thought it to be a pretty shoddy workaround. Even Classic ASP could cope with that without requiring client-side additions to markup. The server-side platform has no business imposing markup requirements on the client in this way.
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