CODEWITHSUNDEEP
phpregex
Mike
Mike

Reputation: 980

How can i pick out the word after a string?

I'm trying to pick out the word/phrase (wrapped in hashtags) after a certain string. For instance:

This is an example paragraph and I am trying to get the word/phrase after the artist name which is in hash tags, such as @calvinharris #feel so close#.

Now, I have been able to successfully grab all @words from the string using:

preg_match_all('!@(.+)(?:\s|$)!U', $string, $matches)

But is there a way I can easily grab the hashtag enclosed phrases (if they're there) after an @name?

Upvotes: 1

Views: 158

Answers (5)

Chris Wesseling
Chris Wesseling

Reputation: 6388

This should do the trick.

preg_match_all('/@(\w+)\s?(?:#([^#]+)#)?/', $string, $matches);

$matches[1] will contain the "artist name" $matches[2] will contain the optional phrase

Upvotes: 1

grifos
grifos

Reputation: 3381

Try the following regexp:

^@(.+)#(.+)#$

And if you want to remove spaces

^@(.+)\S*#(.+)\S*#$

And if you want to trim a lot

^@\S*(.+)\S*#\S*(.+)\S*#$

And you are not sure there is hashtag (or wathever it is called)

^@\S*(.+)\S*(#\S*(.+)\S*#)?$

Upvotes: 2

nettle
nettle

Reputation: 737

You can easily make this by using groups and preg_match.

$name = "calvinharris";
preg_match('/@'.$name.' #([\w\s]+)#/', "This is an example paragraph and I am trying to get the word/phrase after the artist name which is in hash tags, such as @calvinharris #feel so close#. ", $match);
echo '$match = ' . $match[1]; //feel so close

The idea is to use grouping (the things between brackets) and get this group.

Upvotes: 1

maackle
maackle

Reputation: 2134

This seems to do the trick (no / / delimiters included):

@(\S+)\s+#(.+?)#

"1 or more non-whitespace, followed by 1 or more whitespace, followed by some characters enclosed by #"

Note the use of the non-greedy operator (?) for the text inside the hash.

EDIT:

after preg_match_all, $match[1] will correspond to the artist name, $match[2] to the text in hash tags

Upvotes: 1

erm410
erm410

Reputation: 1024

Remember to make your character sets as specific as possible:

preg_match_all('!@([^\s]+) #([^#]+)#!U', $string, $matches)

[^\s]+ will match up to the first white space, [^#]+ will match up to the closing hash tag.

Upvotes: 1

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