Posted by Rik on 05/15/06 20:10

NC wrote:
> laredotornado@zipmail.com wrote:
>>
>> I have a scalar variable, "$url" that may or not contain "http://"
>> in front of it. If it is not there, I'd like to add it.
>> Unfortunately, this code isn't working for me with PHP 4.
>>
>> if (strpos(strtolower($url), "http://") !=
>> 0) { $url = "http://$url";
>> } // if
>>
>> How can I correct?
>
> if (strpos(strtolower($url), "http://") !== false) {
> $url = "http://$url";
> }
>

It's just a pity for relative links, other protocols (https://, ftp://, even
mailto:, all extremely valid). Then again, that wasn't the op's question...

I'd:
if(preg_match('"^(https?://|ftp://|mailto:|\.{0,2}/|smb://|file://|s?news:|l
dap(i|s)?:|gopher:|nntp:|telnet:|mms:|ssh:)"si', $url)<1) $url =
'http://'.$url;

I'm still forgetting a lot of other possibilities though...

Grtz,
--
Rik Wasmus

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