PHP将字符串拆分为整数元素和字符串 [英] PHP split string into integer element and string

问题描述

我有一个字符串说:Order_num = "0982asdlkj"

在php中，如何将其分为2个变量，分别是数字元素和数字元素，然后是数字元素?

How can I split that into the 2 variables, with the number element and then another variable with the letter element in php?

number元素的长度可以是1到4的任何长度，而letter元素将填充其余部分，使每个order_num总共10个字符.

The number element can be any length from 1 to 4 say and the letter element fills the rest to make every order_num 10 characters long in total.

我已经找到了php explode函数...但是我不知道该怎么做，因为数字的数量在1到4之间，并且字母在那之后是随机的，因此无法拆分在一个特定的字母.请尽可能提供具体帮助！

I have found the php explode function...but don't know how to make it in my case because the number of numbers is between 1 and 4 and the letters are random after that, so no way to split at a particular letter. Please help as specifically as possible!

推荐答案

您可以使用 preg_split 使用先行后顾:

print_r(preg_split('#(?<=\d)(?=[a-z])#i', "0982asdlkj"));

打印

Array
(
    [0] => 0982
    [1] => asdlkj
)

这仅在字母部分实际上仅包含字母且没有数字的情况下有效.

This only works if the letter part really only contains letters and no digits.

更新:

只是为了澄清这里发生的事情:

Just to clarify what is going on here:

正则表达式查看每个位置，如果数字在该位置((?<=\d)) 之前，并且在其后的字母((?=[a-z]))之后，则它匹配并且字符串在这个位置.整个过程都不​​区分大小写(i).

The regular expressions looks at every position and if a digit is before that position ((?<=\d)) and a letter after it ((?=[a-z])), then it matches and the string gets split at this position. The whole thing is case-insensitive (i).

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