Regular expression problem

[fredriksk]

Just can´t get this right...

I have parsed a webpage into a variable $body. I have manipulated $body, using the preg_replace function.

But now I have some problems with this regular expression. (in pseudocode)
---- 8< -------------
if pattern = "http:// [something]
replace with
http://www.[something]
---- 8< -------------

I have a couple of other ideas on howe to solve this problem using other functions but since I use the preg_replace funktion on some other patterns I would much prefer if I could use this to solve the above pattern to...

Can anyone help me?

[andrewtayloruk]

Would

$html = str_replace('http://', 'http://www.', $html);
$html = str_replace('//www.www.', '//www.', $html);

Do the trick?

Andrew

[xblue]

if your example was to say something like "replace, but only if [something] is not starting with www. already", this can be done with preg_replace since lookaheads are supported.

pattern might be something like
#[url]http:///url#

[edit: forgot to escape the dot :o]

[fredriksk]

yepp... both reply worked... thanks guys!