从 PHP 中的文本块中获取具有特定前缀的数字 [英] Getting a number when it has certain prefix from a block of text in PHP

问题描述

我有一个很大的段落，在其中的一个随机点出现了一个像这样的字符串，我想提取它:

I have a big paragraph and at a random point in it a string like this occurs which I'd like to extract:

PID: 45678437

'PID' 前和数字后有一个空格，数字的长度可以是 6-10 个字符.

There is a space before 'PID' and after the number, the number can be 6-10 characters in length.

我实际上只需要数字，但想检查它前面是否有 PID:因为段落中可能还有其他大数字.

I actually only need the number but would like to check it is preceded with PID: as there may be other large numbers in the paragraph.

:)

推荐答案

/ PID: (\d{6,10})/

这将匹配一个空格后跟 PID: 后跟一个空格后跟 6-10 位数字并捕获数字.

This will match a space followed by PID: followed by a space followed by 6-10 digits and capture the digits.

我鼓励您学习正则表达式.它们是一个强大的工具.

I would encourage you to learn Regular Expressions. They are a powerful tool.

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