我正在用 PHP 构建一个 Twitter 小东西,我正在尝试解析 URL、@replies 和 #hashtags 并将它们变成可点击的链接。
我找到了一个用于解析 URL 的类,我想知道这是否也可以用于解析 @replies 和 #hashtags:
// http://josephscott.org/archives/2008/11/makeitlink-detecting-urls-in-text-and-making-them-links/
class MakeItLink {
protected function _link_www( $matches ) {
$url = $matches[2];
$url = MakeItLink::cleanURL( $url );
if( empty( $url ) ) {
return $matches[0];
}
return "{$matches[1]}<a href='{$url}'>{$url}</a>";
}
public function cleanURL( $url ) {
if( $url == '' ) {
return $url;
}
$url = preg_replace( "|[^a-z0-9-~+_.?#=!&;,/:%@$*'()x80-xff]|i", '', $url );
$url = str_replace( array( "%0d", "%0a" ), '', $url );
$url = str_replace( ";//", "://", $url );
/* If the URL doesn't appear to contain a scheme, we
* presume it needs http:// appended (unless a relative
* link starting with / or a php file).
*/
if(
strpos( $url, ":" ) === false
&& substr( $url, 0, 1 ) != "/"
&& !preg_match( "|^[a-z0-9-]+?.php|i", $url )
) {
$url = "http://{$url}";
}
// Replace ampersans and single quotes
$url = preg_replace( "|&([^#])(?![a-z]{2,8};)|", "&$1", $url );
$url = str_replace( "'", "'", $url );
return $url;
}
public function transform( $text ) {
$text = " {$text}";
$text = preg_replace_callback(
'#(?<=[\s>])(\()?([\w]+?://(?:[\w\\x80-\\xff\#$%&~/\-=?@\[\](+]|[.,;:](?![\s<])|(?(1)\)(?![\s<])|\)))*)#is',
array( 'MakeItLink', '_link_www' ),
$text
);
$text = preg_replace( '#(<a( [^>]+?>|>))<a [^>]+?>([^>]+?)</a></a>#i', "$1$3</a>", $text );
$text = trim( $text );
return $text;
}
}
最佳答案
我认为您要做的基本上就是我在下面列出的内容。您将在 transform
方法中添加这两个语句,就在 return 语句之前。
$text = preg_replace('#@(\w+)#', '<a href="http://twitter.com/$1">$0</a>', $text);
$text = preg_replace('/#(\w+)/', '<a href="http://twitter.com/search?q=%23$1&src=hash">$0</a>', $text);
这就是你要找的吗?