If i type
www.google.com or http://www.google.com
using auto_link() function will add link correctly..
However, if i type
google.com
the function doesnt work since the www. part is missing...
how can i make sure it will include these links as well??
This is the function from codeigniter:
/**
* Auto-linker
*
* Automatically links URL and Email addresses.
* Note: There's a bit of extra code here to deal with
* URLs or emails that end in a period. We'll strip these
* off and add them after the link.
*
* @access public
* @param string the string
* @param string the type: email, url, or both
* @param bool whether to create pop-up links
* @return string
*/
if ( ! function_exists('auto_link'))
{
function auto_link($str, $type = 'both', $popup = FALSE)
{
if ($type != 'email')
{
if (preg_match_all("#(^|\s|\()((http(s?)://)|(www\.))(\w+[^\s\)\<]+)#i", $str, $matches))
{
$pop = ($popup == TRUE) ? " target=\"_blank\" " : "";
for ($i = 0; $i < count($matches['0']); $i++)
{
$period = '';
if (preg_match("|\.$|", $matches['6'][$i]))
{
$period = '.';
$matches['6'][$i] = substr($matches['6'][$i], 0, -1);
}
$str = str_replace($matches['0'][$i],
$matches['1'][$i].'<a href="http'.
$matches['4'][$i].'://'.
$matches['5'][$i].
$matches['6'][$i].'"'.$pop.'>http'.
$matches['4'][$i].'://'.
$matches['5'][$i].
$matches['6'][$i].'</a>'.
$period, $str);
}
}
}
if ($type != 'url')
{
if (preg_match_all("/([a-zA-Z0-9_\.\-\+]+)@([a-zA-Z0-9\-]+)\.([a-zA-Z0-9\-\.]*)/i", $str, $matches))
{
for ($i = 0; $i < count($matches['0']); $i++)
{
$period = '';
if (preg_match("|\.$|", $matches['3'][$i]))
{
$period = '.';
$matches['3'][$i] = substr($matches['3'][$i], 0, -1);
}
$str = str_replace($matches['0'][$i], safe_mailto($matches['1'][$i].'@'.$matches['2'][$i].'.'.$matches['3'][$i]).$period, $str);
}
}
}
return $str;
}
}
SOLUTION : function auto_link($str, $type = 'both', $popup = FALSE) { if ($type != 'email') { if (!preg_match_all("/^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\.([a-zA-Z])+([a-zA-Z])+/", $str, $matches)){
if (preg_match_all("/(?:https?\:?(?:\/\/)?|www\.)?([a-zA-Z0-9\-\.]+\.(?:.[a-z]*))/mi", $str, $matches))
{
$pop = ($popup == TRUE) ? " target=\"_blank\" " : "";
for ($i = 0; $i < count($matches['0']); $i++)
{
$str = str_replace($matches[0][$i],
'<a href="http://'.$matches[1][0].'" class="auto_link_color">'.$matches[1][0].'</a>', $str);
}
}
}else{
for ($i = 0; $i < count($matches['0']); $i++)
{
$str = str_replace($matches[0][$i], $matches[0][0], $str);
}
}
}
return $str;
}
This solved my problems so whatever link the user enters will find it and add a link... Even if the user enters an email it wont add links on the domain part but instead will show it as text.
function auto_link($str, $type = 'both', $popup = FALSE)
{
if ($type != 'email')
{
if (!preg_match_all("/^([a-zA-Z0-9_.-])+@([a-zA-Z0-9_.-])+\\.([a-zA-Z])+([a-zA-Z])+/", $str, $matches)){
if (preg_match_all("/(?:https?\:?(?:\/\/)?|www\.)?([a-zA-Z0-9\-\.]+\.(?:.[a-z]*))/mi", $str, $matches))
{
$pop = ($popup == TRUE) ? " target=\"_blank\" " : "";
for ($i = 0; $i < count($matches['0']); $i++)
{
$str = str_replace($matches[0][$i],
'<a href="http://'.$matches[1][0].'" class="auto_link_color">'.$matches[1][0].'</a>', $str);
}
}
}else{
for ($i = 0; $i < count($matches['0']); $i++)
{
$str = str_replace($matches[0][$i], $matches[0][0], $str);
}
}
}
return $str;
}
This solved my problems so whatever link the user enters will find it and add a link... Even if the user enters an email it wont add links on the domain part but instead will show it as text.
The autolink should correctly catch http://google.com. Are you saying that doesn't work?
The autolink regex is using the presence of http(s) or www to indicate that a link is present. Without either of those options you'd have to change the regex to detect merely on the top level domain of .com which will get very problematic given the wide array of possible top level domains (.net, .org, .biz, etc.). If you think it through you probably don't want to change this regex because the maintenance on all the possible domains and new ones being added will be far more cumbersome than it's worth.
I'm sorry but you're using auto_link() the wrong way.
The parameter is supposed to be a VALID url or email. Putting just "www.google.com" is not allowed and should'nt work at all :-)
So you should do :
auto_link('http://www.google.com')
auto_link('http://google.com')
Never ommitting the "http://" at the begining.
If you're not using "http://" or "www." as your "link this" trigger, you'd have to code it to catch .com, .org, .net (and an ever-expanding set of possibilities). As others have suggested, making this reg ex "greedier" will match things that shouldn't be links. It's up to you to weigh the balance based on your priorities.
Here's a (very simplistic) little experiment I tried:
<?php
header("Content-type: text/plain");
$text = 'http://google.com
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed in urna auctor tellus consequat cursus.
Cras malesuada magna eget felis accumsan vel dictum urna sodales. Vestibulum erat ante, rutrum et
aliquet vel, convallis eu google.com. Phasellus interdum velit at urna google.com porta. Donec at interdum
nibh. Fusce ultricies varius elit id egestas. Suspendisse dolor risus, vulputate vel rutrum in,
http://google.com et nisi. Etiam non massa non neque lacinia adipiscing sed nec metus. Sed fermentum ultricies
dui at porta. Duis at lacinia tortor. Nam mi est, mollis sed viverra et, mollis ac lorem. In mattis
lacinia tempor.
Sed in luctus nunc. Mauris nec tincidunt dui. Vivamus interdum, velit sed lobortis lobortis, nulla dui
vestibulum dui, eu tincidunt arcu felis et massa. google.COM vitae porta felis. Sed sit amet magna augue.
Aenean dignissim tempus porta. Donec ultrices lectus ac sapien gravida sodales. Quisque malesuada
sagittis rhoncus. Vestibulum mattis auctor ligula, eu tempus odio hendrerit in. Ut vel elit ipsum. Sed
ante lorem, www.google.com et dictum nec, ultricies a lorem.
';
$domains = 'com|org|net';
if ( !preg_match_all('#([\S]*)(\.('.$domains.']))#i', $text, $matches))
{
die('no matches');
}
print_r($matches);
Output:
Array
(
[0] => Array
(
[0] => http://google.com
[1] => google.com
[2] => google.com
[3] => http://google.com
[4] => google.COM
[5] => www.google.com
)
[1] => Array
(
[0] => http://google
[1] => google
[2] => google
[3] => http://google
[4] => google
[5] => www.google
)
[2] => Array
(
[0] => .com
[1] => .com
[2] => .com
[3] => .com
[4] => .COM
[5] => .com
)
[3] => Array
(
[0] => com
[1] => com
[2] => com
[3] => com
[4] => COM
[5] => com
)
)