当字符串每次都不同时，如何获取字符串的一部分

Question

So I have a string that is retrieved from my database. The returned value could be laid out like

VD-6||CL-4

or just

VD-6

I need the value after the hyphen. so for instance if it returned

VD-12||CL-5  

I need to extract "12" from that string.

Any help is appreciated.

Answer 1

You could do this using Regular Expressions, or just the old fashion splitting method.

Let me give you an example on the second one:

$string = 'VD-12||CL-5';

$split = explode('-', $string);
$yourNumber = intval($split[1]); // $yourNumber = 12

But.... I would prefer fixing this with regular expressions. But it's really hard to give a concrete example of a regular expression without exactly knowing the requirements for the regex and the input. Same goes for my code example above, by the way. But I just went with the information you provided.