XPATH - 获取单个值而不是数组php [英] XPATH - get single value returned instead of array php

问题描述

我在PHP中使用Xpath - 我知道我的查询将返回0或1个结果。

如果返回1个结果，我不希望它数组 - 这是现在返回的。我只需要该值，而不必访问结果的 [0] 元素并转换为字符串。

这是可能吗？

解决方案

使用'评估'而不是'查询' / em>，你可以做一些投射。

• DOMXPath :: evaluate（）

另外，如果你只是很烦恼，做一些事情很多次，只需编写一个功能，这就是功能背后的整个想法，对吧？

I am using Xpath in PHP - I know that my query will return either 0 or 1 results.

If 1 result is returned I do not want it as an array - which is what is returned right now. I simply want the value without having to access the [0] element of the result and cast to a string.

Is this possible?

解决方案

Using 'evaluate' instead of 'query', you can do things like casting.

• DOMXPath::evaluate()

Also, if you're just annoyed with doing stuff a lot of times, just write a function that does it ... that is the whole idea behind functions, right?

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