How can I filter a non recognizable character from this?

Question

I have asked this before but cant find a response/answer to the same.

I do have tags like this..

news,é—¨æˆ·,æ–°é—»,portal,ç½‘æ˜“,163,china,é—¨æˆ·ç

I need to extract only news,portal,163,china from above. how can I do it in php??

It's worth noting that he's asking to remove some commas as well. — Álvaro González, Jan 27 '11 at 16:35
possible duplicate of [can I convert this utf8 character??](http://stackoverflow.com/questions/4815714/can-i-convert-this-utf8-character) — Álvaro González, Jan 27 '11 at 16:36
@Vicario I believe you did not understand my question..I wasnt asked for removing commas... — leon, Jan 27 '11 at 17:20

enobrev · Answer 1 · 2011-01-27T16:53:53.920

2

Replace anything that's not a letter or comma:

$sString = preg_replace('/[^a-z0-9,]+/i', '', $sString);
$sString = preg_replace('/,{2,}/', ',', $sString);

edited Jan 27 '11 at 16:53

answered Jan 27 '11 at 16:31

enobrev

1

This returns `,,news,,,portal,,,china,` ;-) – Arnaud Le Blanc Jan 27 '11 at 16:35

Arnaud Le Blanc · Accepted Answer · 2011-01-27T16:39:02.370

2

Assuming you want to keep only ascii alpha-numeric parts of this string, the following code will work:

$str = explode(',', $str);
$str = preg_grep('#^[[:alnum:]]+$#', $str);
$str = implode(',', $str);

This one too:

$str = preg_replace('#(^([^[:alnum:],]+,)+|,[^[:alnum:],]+)#', '', $str);

Which both return news,portal,163,china

edited Jan 27 '11 at 16:39

answered Jan 27 '11 at 16:31

Arnaud Le Blanc

powtac · Answer 3 · 2011-01-27T16:40:27.773

0

echo str_replace(',,', ',', preg_replace('~[^a-zA-Z0-9,]~i', '', $searchString));

edited Jan 27 '11 at 16:40

answered Jan 27 '11 at 16:34

powtac

1

The ^ is misplaced, this returns the original string ;-) – Arnaud Le Blanc Jan 27 '11 at 16:36

score 0 · Answer 4 · edited Aug 15 '12 at 19:49

0

s/([[:alnum:]\ ]+,?|) .*? ([[:alnum:]\ ]+,?|) /$1$2/xsg

or

s/[\x{80}-\x{1fffff}]+,?//g

edited Aug 15 '12 at 19:49

j0k

answered Jan 27 '11 at 17:51

4 Answers4