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php自动给网址加上链接的方法

WBOY
WBOYOriginal
2016-06-06 20:03:45882browse

这篇文章主要介绍了php自动给网址加上链接的方法,可实现对本文中的网址加上链接的功能,涉及正则匹配的相关技巧,需要的朋友可以参考下

本文实例讲述了php自动给网址加上链接的方法。分享给大家供大家参考。具体实现方法如下:

这里自动匹配页面里的网址,包含http,ftp等,自动给网址加上链接

function text2links($str='') { if($str=='' or !preg_match('/(http|www\.|@)/i', $str)) { return $str; } $lines = explode("\n", $str); $new_text = ''; while (list($k,$l) = each($lines)) { // replace links: $l = preg_replace("/([ \t]|^)www\./i", "\\1", $l); $l = preg_replace("/([ \t]|^)ftp\./i", "\\1ftp://ftp.", $l); $l = preg_replace("/(http:\/\/[^ )\r\n!]+)/i", "\\1", $l); $l = preg_replace("/(https:\/\/[^ )\r\n!]+)/i", "\\1", $l); $l = preg_replace("/(ftp:\/\/[^ )\r\n!]+)/i", "\\1", $l); $l = preg_replace( "/([-a-z0-9_]+(\.[_a-z0-9-]+)*@([a-z0-9-]+(\.[a-z0-9-]+)+))/i", "\\1", $l); $new_text .= $l."\n"; } return $new_text; } //使用范例: $text = "Welcome :-)"; print text2links($text);

希望本文所述对大家的php程序设计有所帮助。

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