ansaurus

Question

Answer 1

+1 A:

This should do it: ^http://.*

klausbyskov 2010-10-25 10:50:55

@Gordon, it will do what the OP asked.

klausbyskov 2010-10-25 11:06:48

Answer 2

+1 A:

Is that really what you want?

This will match everything up to the first whitespace: ^http://[^\s]*

Nev Stokes 2010-10-25 10:52:41

Strictly speaking, the OP doesn't explicitly mention that it's a URI - he just wants to match *anything* that starts with 'http://'

Nev Stokes 2010-10-25 11:09:04

Answer 3

+2 A:

Why not just look to see if the first 7 characters are "http://"

substr($url, 0, 7) == "http://"

No need for regexps here.

Paul 2010-10-25 10:56:35

Agreed, but the OP asks for matches for anything that starts with 'http://', not for matches of http:// anywhere in the string.

Paul 2010-10-25 11:03:45

Strpos will go off looking in the rest of the string too, so will be slower in non-matching cases :) We need the OP to tell us what's really needed.

Paul 2010-10-25 11:08:19

Answer 4

+1 A:

So basicly, you want to match a URL in a string?

http://([-\w\.]+)+(:\d+)?(/([\w/_\.]*(\?\S+)?)?)?

Ruel 2010-10-25 10:56:56

regular expression for string that starts with 'http://'