正则表达式在=后获得值

Question

I'm trying to get the values ad.test.com and 768 from the string "adress=ad.test.com port=768" with this regex but it doesn't work :/

$res = preg_split("/^adresse=([a-z]).*port=([0-9]{3})/", $test) ; 

Answer 1

This should capture the 2 data points you want:

^adress=([a-z.]+).*port=([0-9]{3})

You also want to use this with preg_match, not preg_split.

preg_match('/^adress=([a-z.]+).*port=([0-9]{3})/s', 'adress=ad.test.com
 port=768', $match);
echo $match[1] . ' ' . $match[2];

Demo: https://3v4l.org/Ih929

Notes on why your regex failed:

1. Character class missing ., and the character class wasn't quantified.
2. adress is in your string but you are looking for addresse in your regex
3. . doesn't match new lines unless the s modifier is used.

Regex demo: https://regex101.com/r/3MSiDh/1/

A more accurate regex that won't require s modifier:

^adress=([a-z.]+?)\s*port=(\d{3})

Demo 2: https://regex101.com/r/3MSiDh/3/