PHP正则表达式preg_match_all用于字符串

Question

I have the following string:

keyword|title|http://example.com/

I would like to use the PHP function

preg_match_all ( $anchor, $key, $matches, PREG_SET_ORDER) )

currently

$anchor='/([\w\W]*?)\|([\w\W]*)/';

and I get $matches array:

Array
(
    [0] => Array
        (
            [0] => keyword|title|http://example.com/
            [1] => keyword
            [2] => title|http://example.com/
        )

)

I would like to get

matches[1]=keyword
matches[2]=title
matches[3]=http://example.com

How would I have to modify $anchor to achieve this?

Answer 1

The easiest way would be to use explode() instead of regular expressions:

$parts = explode('|', $str);

Assuming none of the parts can contain | . But if they could, regex wouldn't help you much either.

Answer 2

If you want to keep using the regex to avoid a manual loop, then I'd recommend this over the used [\\w\\W]* syntax and for readability:

$anchor = '/([^|]*) \| ([^|]*) \| ([^\s|]+)/x';

It's a bit more robust with explicit negated character classes. (I assume neither title nor url can contain | here.)