搜索在VS文本搜索数组....哪一个更好的效率？ [英] Efficiency of Searching an Array Vs Searching in Text.... Which is Better?

问题描述

我有（整数）编号的，对此我保存为文本，如

I have a List of (integer)ID's, which i am storing as text, like

23;45;67;12;332;783;123;33;15;87;41;422;88;58;

现在我用PHP的工作，我想检查是否有特定的ID在该文本已经存在，我有在爆炸功能，它可以给我号的阵列，然后我可以使用 in_array 功能，或者我可以只使用 strpos 功能设置为查找文本

now i am working with PHP, i want to check if a particular ID already exists in that TEXT, i have the explode function, which can give me an array of numbers, and then i can use the in_array function, alternatively i can just use the strpos function to find in text.

那么，哪一个会的更有效 accourding给你？

so which one will be more efficient accourding to you ?

非常感谢您抽出时间来阅读。

Thanks a lot for taking time to read this.

推荐答案

如果你需要做的就是查找一个ID，那么 strpos（）将更加高效，因为所有它需要做的就是找​​到 ID的发生; ，而爆炸（）会做很多更重要的是，更不用说 in_array昂贵的调用（）。

If all you have to do is look up a single ID, then strpos() will be more efficient, because all it has to do is find an occurrence of id;, whereas explode() will do a lot more than that, not to mention the costly call to in_array().

这篇关于搜索在VS文本搜索数组....哪一个更好的效率？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！