I've got string like
$content = "Some content some content
[images ids="10,11,20,30,40"]
Some content";
I want to remove [images ids="10,11,20,30,40"] part from it and get ids part as php array(10,11,20,30,40)
Is it possible with regex?
-
Have you tried anything? Code please.DrCord– DrCord2013-12-03 19:01:54 +00:00Commented Dec 3, 2013 at 19:01
-
I've made string replace and then array explode by comma, but I dont think it is good solution.pie6k– pie6k2013-12-03 19:02:31 +00:00Commented Dec 3, 2013 at 19:02
-
3@Kluska000 if you know the format of your string, then what you're doing sounds like a good idea to meTom Fenech– Tom Fenech2013-12-03 19:03:16 +00:00Commented Dec 3, 2013 at 19:03
-
Yeah, that's what anyone is going to do...DrCord– DrCord2013-12-03 19:04:19 +00:00Commented Dec 3, 2013 at 19:04
-
You probably can't do both those things with a single preg function.user557597– user5575972013-12-03 19:08:30 +00:00Commented Dec 3, 2013 at 19:08
Add a comment
|
2 Answers
You can use this:
$txt = <<<LOD
Some content some content
[images ids="10,11,20,30,40"]
Some content
LOD;
$result = array();
$txt = preg_replace_callback('~(?:\[images ids="|\G(?!^))([0-9]+)(?:,|"])~',
function ($m) use (&$result) { $result[] = $m[1]; }, $txt);
echo $txt . '<br>' . print_r($result, true);
The \G anchor can be very useful in this situation since it's a kind of anchor that means "at the start of the string or contiguous to a precedent match".
However, nothing in the pattern checks if there is a last number followed by "]. If you need to do that, you must add a lookahead to the pattern:
~(?:\[images ids="|\G(?!^))([0-9]+)(?=(?:,[0-9]+)*"])(?:,|"])~
answered Dec 3, 2013 at 19:12
Casimir et Hippolyte
90k5 gold badges102 silver badges131 bronze badges
2 Comments
Casimir et Hippolyte
@anubhava: Thanks anubhava! The
\G feature is like a philosopher's stone, you search it for a long time, but it's very powerful.
anubhava
Yes I learnt about
\G in one of your previous answers sometime back. Thanks!Assuming that's the structure of content and it doesn't get any more complex, then:
preg_match_all('/(\d+)/', $content, $matches);
print_r($matches[0]);
More would need to be added to narrow it down if it is more complex.
