无论如何在PHP中将纯文本URL转换为HTML超链接?我需要转换以下类型的网址:
http://example.com
http://example.org
http://example.gov/
http://example.com?q=sometext&opt=thisandthat
http://example.com#path
http://example.com?q=querypath#path
http://example.com/somepath/index.html
https://example.com/
https://example.org/
https://example.gov/
https://example.com?q=sometext&opt=thisandthat
https://example.com#path
https://example.com?q=querypath#path
https://example.com/somepath/index.html
http://www.example.com/
http://www.example.org/
http://www.example.gov/
http://www.example.com?q=sometext&opt=thisandthat
http://www.example.com#path
http://www.example.com?q=querypath#path
http://www.example.com/somepath/index.html
https://www.example.com/
https://www.example.org/
https://www.example.gov/
https://www.example.com?q=sometext&opt=thisandthat
https://www.example.com#path
https://www.example.com?q=querypath#path
https://www.example.com/somepath/index.html
www.example.com/
www.example.org/
www.example.gov/
www.example.com?q=sometext&opt=thisandthat
www.example.com/#path
www.example.com?q=querypath#path
www.example.com/somepath/index.html
example.com/
example.org/
example.gov/
example.com?q=sometext&opt=thisandthat
example.com/#path
example.com?q=querypath#path
example.com/somepath/index.html
答案 0 :(得分:3)
如何通过正则表达式运行它们,如下面用于重新激活Twitter链接 -
答案 1 :(得分:2)
如果您只需转换单个网址,则非常简单:
function makeLink($url)
{
return '<a href="' . htmlspecialchars($url) . '">' . htmlspecialchars($url) . '</a>';
}
对于出现在较大文本块中的网址,例如用户评论,请看这个问题:
答案 2 :(得分:2)
试试这个功能。如果文本以http或www开头,这将生成链接。 example.com无法使用。
function linkable($text = ''){
$text = preg_replace("/\s+/", ' ', str_replace(array("\r\n", "\r", "\n"), ' ', $text));
$data = '';
foreach( explode(' ', $text) as $str){
if (preg_match('#^http?#i', trim($str)) || preg_match('#^www.?#i', trim($str))) {
$data .= '<a href="'.$str.'">'.$str.'</a> ';
} else {`enter code here`
$data .= $str .' ';
}
}
return trim($data);
}
答案 3 :(得分:0)
呃,把它们包裹在锚标签中?
function linkify($url) {
return '<a href="' . $url . '">' . $url . '</a>';
}
答案 4 :(得分:0)
这是我用来在我做的小论坛上做同样的事情。通常我会像echo makeLinks($forumpost['comment']);
function makeLinks($str) {
return preg_replace('/(https?):\/\/([A-Za-z0-9\._\-\/\?=&;%,]+)/i', '<a href="$1://$2" target="_blank">$1://$2</a>', $str);
}
答案 5 :(得分:0)
这是我的操作方式(包括测试用例):
/**
* @see Inspired by https://css-tricks.com/snippets/php/find-urls-in-text-make-links/ and Example 1 of http://php.net/manual/en/function.preg-replace-callback.php
*
* @param string $text
* @return string
*/
public static function getTextWithLinksEnabled($text) {
$regex = "/(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/";
return preg_replace_callback($regex, function ($matches) {
$fullMatch = $matches[0];
return "<a href='" . $fullMatch . "'>" . $fullMatch . "</a>";
}, $text);
}
测试:
public function testGetTextWithLinksEnabled() {
$this->assertEquals('a@b.com', StrT::getTextWithLinksEnabled('a@b.com'));//no links
$this->assertEquals('just plain text', StrT::getTextWithLinksEnabled('just plain text'));//no links
$this->assertEquals("here is a link <a href='https://stackoverflow.com/'>https://stackoverflow.com/</a> right here", StrT::getTextWithLinksEnabled('here is a link https://stackoverflow.com/ right here'));//one link
$this->assertEquals("here is a link <a href='https://stackoverflow.com/'>https://stackoverflow.com/</a> right here and another: <a href='https://css-tricks.com/snippets/php/find-urls-in-text-make-links/'>https://css-tricks.com/snippets/php/find-urls-in-text-make-links/</a>", StrT::getTextWithLinksEnabled('here is a link https://stackoverflow.com/ right here and another: https://css-tricks.com/snippets/php/find-urls-in-text-make-links/'));//2 links
}
答案 6 :(得分:0)
万一最终用户不包含“ http://”或“ https://”(在我的情况下,将链接复制到表单中)。 根据我上方的瑞安代码:
function makeLink($text) {
$regex = "/(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/";
return preg_replace_callback($regex, function ($matches) {
$fullMatch = $matches[0];
// $fullMatch = startsWith($fullMatch, 'http') ? $fullMatch : 'http://'.$fullMatch;
return "<a href='" . $fullMatch . "'>" . $fullMatch . "</a>";
}, substr( $text, 0, strlen( 'http' ) ) === 'http' ? $text : 'http://'.$text);
}