模仿 Stack Overflow 的自動連結功能
要增強 Web 內容,請考慮模擬 Stack Overflow 的自動連結功能。此函數可以將純 URL 轉換為視覺上吸引人的超連結。
在PHP 中實作
這是一個受Stack Overflow 行為啟發的PHP 函數:
<code class="php">function auto_link_text($text) { // URL matching regex pattern from Daring Fireball $pattern = '(?i)\b((?:[a-z][\w-]+:(?:/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:\'".,<>?«»“”‘’]))'; $callback = create_function('$matches', ' $url = array_shift($matches); $url_parts = parse_url($url); $text = parse_url($url, PHP_URL_HOST) . parse_url($url, PHP_URL_PATH); $text = preg_replace("/^www./", "", $text); $last = -(strlen(strrchr($text, "/"))) + 1; if ($last < 0) { $text = substr($text, 0, $last) . "&hellip;"; } return sprintf(\'<a rel="nofollow" href="%s">%s</a>\', $url, $text); '); return preg_replace_callback($pattern, $callback, $text); }</code>
範例
範例<code class="text">This is my text. I wonder if you know about asking questions on StackOverflow: Check This out http://www.stackoverflow.com/questions/1925455/how-to-mimic-stackoverflow-auto-link-behavior Also, base_convert php function? http://pt.php.net/manual/en/function.base-convert.php#52450 http://pt.php.net/manual/en/function.base-convert.php?wtf=hehe#52450</code>範例
。 >
<code class="html">This is my text. I wonder if you know about asking questions on StackOverflow: Check This out <a rel="nofollow" href="http://www.stackoverflow.com/questions/1925455/how-to-mimic-stackoverflow-auto-link-behavior">stackoverflow.com/questions/1925455/…</a> Also, base_convert php function? <a rel="nofollow" href="http://pt.php.net/manual/en/function.base-convert.php#52450">pt.php.net/manual/en/…</a> <a rel="nofollow" href="http://pt.php.net/manual/en/function.base-convert.php?wtf=hehe#52450">pt.php.net/manual/en/…</a></code>考慮以下輸入文本:
使用auto_link_text 函數,此文本將被轉換:
向連結標記新增其他屬性
從自動連結中排除某些網址 透過調整實現,您可以建立滿足您特定需求的自訂自動連結解決方案。以上是如何在 PHP 中模仿 Stack Overflow 的自動連結功能?的詳細內容。更多資訊請關注PHP中文網其他相關文章!