Convertir en texte brut Url en liens hypertexte HTML en PHP

Bien, Volomike la réponse est beaucoup plus proche. Et pour pousser un peu plus loin, voici ce que j'ai fait pour elle d'ignorer la fuite période à la fin des hyperliens. J'ai également considéré comme URI fragments.

public static function makeClickableLinks($s) {
  return preg_replace('@(https?://([-\w\.]+[-\w])+(:\d+)?(/([\w/_\.#-]*(\?\S+)?[^\.\s])?)?)@', '<a href="$1" target="_blank">$1</a>', $s);
}

Reportez-vous http://zenverse.net/php-function-to-auto-convert-url-into-hyperlink/.
C'est la façon dont wordpress résoudre

function _make_url_clickable_cb($matches) {
$ret = '';
$url = $matches[2];
if ( empty($url) )
return $matches[0];
//removed trailing [.,;:] from URL
if ( in_array(substr($url, -1), array('.', ',', ';', ':')) === true ) {
$ret = substr($url, -1);
$url = substr($url, 0, strlen($url)-1);
}
return $matches[1] . "<a href=\"$url\" rel=\"nofollow\">$url</a>" . $ret;
}
function _make_web_ftp_clickable_cb($matches) {
$ret = '';
$dest = $matches[2];
$dest = 'http://' . $dest;
if ( empty($dest) )
return $matches[0];
//removed trailing [,;:] from URL
if ( in_array(substr($dest, -1), array('.', ',', ';', ':')) === true ) {
$ret = substr($dest, -1);
$dest = substr($dest, 0, strlen($dest)-1);
}
return $matches[1] . "<a href=\"$dest\" rel=\"nofollow\">$dest</a>" . $ret;
}
function _make_email_clickable_cb($matches) {
$email = $matches[2] . '@' . $matches[3];
return $matches[1] . "<a href=\"mailto:$email\">$email</a>";
}
function make_clickable($ret) {
$ret = ' ' . $ret;
//in testing, using arrays here was found to be faster
$ret = preg_replace_callback('#([\s>])([\w]+?://[\w\\x80-\\xff\#$%&~/.\-;:=,?@\[\]+]*)#is', '_make_url_clickable_cb', $ret);
$ret = preg_replace_callback('#([\s>])((www|ftp)\.[\w\\x80-\\xff\#$%&~/.\-;:=,?@\[\]+]*)#is', '_make_web_ftp_clickable_cb', $ret);
$ret = preg_replace_callback('#([\s>])([.0-9a-z_+-]+)@(([0-9a-z-]+\.)+[0-9a-z]{2,})#i', '_make_email_clickable_cb', $ret);
//this one is not in an array because we need it to run last, for cleanup of accidental links within links
$ret = preg_replace("#(<a( [^>]+?>|>))<a [^>]+?>([^>]+?)</a></a>#i", "$1$3</a>", $ret);
$ret = trim($ret);
return $ret;
}

public static function makeClickableLinks($s) {
return preg_replace('@(https?://([-\w\.]+)+(:\d+)?(/([\w/_\.-]*(\?\S+)?)?)?)@', '<a href="$1">$1</a>', $s);
}

Voici mon code pour le format de tous les liens à l'intérieur du texte, y compris les courriels, les url avec et sans protocole.

public function formatLinksInText($text)
{
//Catch all links with protocol      
$reg = '/(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,}(\/\S*)?/'; 
$formatText = preg_replace($reg, '<a href="$0" style="font-weight: normal;" target="_blank" title="$0">$0</a>', $formatText);
//Catch all links without protocol
$reg2 = '/(?<=\s|\A)([0-9a-zA-Z\-\.]+\.[a-zA-Z0-9\/]{2,})(?=\s|$|\,|\.)/';
$formatText = preg_replace($reg2, '<a href="//$0" style="font-weight: normal;" target="_blank" title="$0">$0</a>', $formatText);
//Catch all emails
$emailRegex = '/(\S+\@\S+\.\S+)/';
$formatText = preg_replace($emailRegex, '<a href="mailto:$1" style="font-weight: normal;" target="_blank" title="$1">$1</a>', $formatText);
$formatText = nl2br($formatText);
return $formatText;
}

S'il vous plaît commentaire l'url qui ne fonctionne pas. Je vais essayer de mettre à jour les regex.

Je suis en utilisant une fonction qui proviennent de question2answer, il accepte de texte, et même de la plaine des liens de texte en html:

//$html holds the string
$htmlunlinkeds = array_reverse(preg_split('|<[Aa]\s+[^>]+>.*</[Aa]\s*>|', $html, -1, PREG_SPLIT_OFFSET_CAPTURE)); //start from end so we substitute correctly
foreach ($htmlunlinkeds as $htmlunlinked)
{ //and that we don't detect links inside HTML, e.g. <img src="http://...">
$thishtmluntaggeds = array_reverse(preg_split('/<[^>]*>/', $htmlunlinked[0], -1, PREG_SPLIT_OFFSET_CAPTURE)); //again, start from end
foreach ($thishtmluntaggeds as $thishtmluntagged)
{
$innerhtml = $thishtmluntagged[0];
if(is_numeric(strpos($innerhtml, '://'))) 
{ //quick test first
$newhtml = qa_html_convert_urls($innerhtml, qa_opt('links_in_new_window'));
$html = substr_replace($html, $newhtml, $htmlunlinked[1]+$thishtmluntagged[1], strlen($innerhtml));
}
}
}   
echo $html;
function qa_html_convert_urls($html, $newwindow = false)
/*
Return $html with any URLs converted into links (with nofollow and in a new window if $newwindow).
Closing parentheses/brackets are removed from the link if they don't have a matching opening one. This avoids creating
incorrect URLs from (http://www.question2answer.org) but allow URLs such as http://www.wikipedia.org/Computers_(Software)
*/
{
$uc = 'a-z\x{00a1}-\x{ffff}';
$url_regex = '#\b((?:https?|ftp)://(?:[0-9'.$uc.'][0-9'.$uc.'-]*\.)+['.$uc.']{2,}(?::\d{2,5})?(?:/(?:[^\s<>]*[^\s<>\.])?)?)#iu';
//get matches and their positions
if (preg_match_all($url_regex, $html, $matches, PREG_OFFSET_CAPTURE)) {
$brackets = array(
')' => '(',
'}' => '{',
']' => '[',
);
//loop backwards so we substitute correctly
for ($i = count($matches[1])-1; $i >= 0; $i--) {
$match = $matches[1][$i];
$text_url = $match[0];
$removed = '';
$lastch = substr($text_url, -1);
//exclude bracket from link if no matching bracket
while (array_key_exists($lastch, $brackets)) {
$open_char = $brackets[$lastch];
$num_open = substr_count($text_url, $open_char);
$num_close = substr_count($text_url, $lastch);
if ($num_close == $num_open + 1) {
$text_url = substr($text_url, 0, -1);
$removed = $lastch . $removed;
$lastch = substr($text_url, -1);
}
else
break;
}
$target = $newwindow ? ' target="_blank"' : '';
$replace = '<a href="' . $text_url . '" ' . $target . '>' . $text_url . '</a>' . $removed;
$html = substr_replace($html, $replace, $match[1], strlen($match[0]));
}
}
return $html;
}

Un peu plus de code, en raison d'accepter des liens qui détiennent des supports et d'autres personnages, mais probablement que ça aide.

$string = 'example.com
www.example.com
http://example.com
https://example.com
http://www.example.com
https://www.example.com';
preg_match_all('#(\w*://|www\.)[a-z0-9]+(-+[a-z0-9]+)*(\.[a-z0-9]+(-+[a-z0-9]+)*)+(/([^\s()<>;]+\w)?/?)?#i', $string, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER);
foreach (array_reverse($matches) as $match) {
$a = '<a href="'.(strpos($match[1][0], '/') ? '' : 'http://') . $match[0][0].'">' . $match[0][0] . '</a>';
$string = substr_replace($string, $a, $match[0][1], strlen($match[0][0]));
}
echo $string;

Résultat:

example.com
<a href="http://www.example.com">www.example.com</a>
<a href="http://example.com">http://example.com</a>
<a href="https://example.com">https://example.com</a>
<a href="http://www.example.com">http://www.example.com</a>
<a href="https://www.example.com">https://www.example.com</a>

Ce que j'aime dans cette solution, c'est qu'il convertit également www.example.com à http://www.example.com parce que <a href="www.example.com"></a> ne fonctionne pas (sans http/https protocole, les points de yourdomain.com/www.example.com).