Auto Parse URLs with PHP

[thebear]

I am opening a .txt file with the fopen function, and I want to know if there is a way of making all urls that are displayed links automatically

 

[Zedric]

Yeah it's possible but not trivial. This forums uses such a function. I really can't say how it's done off the top of my head, but if you seach google you might find some scripts that do this or at least have this function as a part of it.

 

[Smifffy]

try opening the file - making it a varible then just use echo

<?php
$page = "";
$fp = fopen( "test.txt", "r" );
while( !feof( $fp ) )
$page .= fgets( $fp);
fclose( $fp );

echo "$page";
?>



try that

 

[Zedric]

That will just display the contents of the file. There are functions that will do this for you. The problem was parsing any url:s into acctual links:

Codewise:
http://whatever.com =>
<A HREF="http://whatever.com">http://whatever.com</A>

Displaywise:
http://whatever.com => http://whatever.com

 

[SPeedY_B]

Just wrote this...

<?php

$p = fopen("test.txt", "r");
while(!feof($p))
{ $output = htmlspecialchars(fgets($p, 4096));
  $output = preg_replace("/((http(s?):\/\/)|(www\.))([\w\.]+)/i", "<a href=\"http$3://$4$5\" target=\"_blank\">$2$4$5</a>", $output);
  print $output;
}
fclose($p);

?>

It should work, Tried it locally on Windows, seems ok

 

[Zedric]

Oooh, I really need to learn about reg-expressions some time. They are very handy.

 

[Smifffy]

well when i ran it on my server it parsed them into links - strange

o
i see - silly me you want www.blabla.com into <a href="http://www.blabla.com">www.blabla.com</a>

yea regex is the way to go then

 

[thebear]

well, I'm probably doing some newbish thing to make this not work... when I run the script I get line after line of:
Warning: Unknown modifier '/' in c:\apache\htdocs\nintel.php on line 54

 

[Zedric]

Yeah, I get that to. It's this stupid forum code parser again. Try this instead:

<?php

$p = fopen("test.txt", "r");
while(!feof($p))
{
  $output = htmlspecialchars(fgets($p, 4096));
  $output = preg_replace("/((http(s?):\\\/\\\/)|(www\\\.))([\\\w\\\.]+)/i", "<a href=\"http$3://$4$5\" target=\"_blank\">$2$4$5</a>", $output);
  print $output;
}
fclose($p);

?>

 

[thebear]

yeah, that works

the only problem is on URLs that have a / after the .com, it doesnt add it...(ex. http://site.com/page.php)

 

[X-Istence]

Originally posted by thebear
yeah, that works

the only problem is on URLs that have a / after the .com, it doesnt add it...(ex. http://site.com/page.php)

that has to do with the regexp. youd need to re-write it so that it will recognize everything beyon the .<tld>