PHP regular expression find the modify the current matches [duplicate]

Question

I have a string that I need to replace any url to be in <a> html tag

$str='Lorem Ipsum is simply dummy text of http://www.lipsum.com/ the printing';

$outputString=
'Lorem Ipsum is simply dummy text of <a href="http://www.lipsum.com">http://www.lipsum.com/</a> the printing';

The $ouputString is invalid, you need to escape the double quotes — AlexP
– AlexP, Commented Nov 22, 2013 at 20:23
it's just a sample not exactly a real code, i just need tips for the answer — Husamuddin
– Husamuddin, Commented Nov 22, 2013 at 20:25
@AlexP not if the string is surrounded by single quotes... as it is in the OP — OGHaza
– OGHaza, Commented Nov 22, 2013 at 20:25
This question has been asked so many times before on SO. Try searching around first. stackoverflow.com/questions/1188129/… and stackoverflow.com/questions/1959062/… and stackoverflow.com/questions/1960461/… are just a few examples. — jszobody
– jszobody, Commented Nov 22, 2013 at 20:27
-1 and vote for close This is a duplicate and you haven't even bothered to show you have made any effort to do this yourself. — Mike Brant
– Mike Brant, Commented Nov 22, 2013 at 20:40

OGHaza · Accepted Answer · 2013-11-22 20:53:03Z

1

$str='Lorem Ipsum is simply dummy text of http://www.lipsum.com/ the printing';
$pattern='/\b((https?:\/\/|www.)[\w.\/-?=&#]+)(?=\s)/i';
$replace='<a href="$1">$1</a>';
echo preg_replace($pattern, $replace, $str);

Output:

Lorem Ipsum is simply dummy text of <a href="http://www.lipsum.com/">http://www.lipsum.com/</a> the printing'

Working on RegExr

edited Nov 22, 2013 at 20:53

answered Nov 22, 2013 at 20:36

OGHaza

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3 Comments

OGHaza Over a year ago

$1 means the first capture group in the match, which in this case is the URL.

Husamuddin Over a year ago

the pattern doesn't match this link youtube.com/watch?v=J4TAWrT4upY and other links

OGHaza Over a year ago

Any character you need to match just add into the [...] in the middle. I'll add ?, =, # and & now.

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