我编写这个函数是为了将所有特定的URL(mywebsite.com)转换为链接,并将其他URL剥离为@@@spam@@@。
function get_global_convert_all_urls($content) {
$content = strtolower($content);
$replace = "/(?:http|https)?(?:':'/'/)?(?:www.)?(([A-Za-z0-9-]+'.)*[A-Za-z0-9-]+'.[A-Za-z]+)(?:'/.*)?/im";
preg_match_all($replace, $content, $search);
$total = count($search[0]);
for($i=0; $i < $total; $i++) {
$url = $search[0][$i];
if(preg_match('/mywebsite.com/i', $url)) {
$content = str_replace($url, '<a href="'.$url.'">'.$url.'</a>', $content);
} else {
$content = str_replace($url, '@@@spam@@@', $content);
}
}
return $content;
}
我唯一不能解决的问题是,如果一行中有两个URL,正则表达式就不会以空格结尾。
$content = "http://www.mywebsite.com/index.html http://www.others.com/index.html";
结果:
<a href="http://www.mywebsite.com/index.html http://www.others.com/index.html">http://www.mywebsite.com/index.html http://www.others.com/index.html</a>
如何获得以下结果:
<a href="http://www.mywebsite.com/index.html">http://www.mywebsite.com/index.html</a> @@@spam@@@
我试着在正则表达式的末尾添加这个(''s|$),但没有成功:
/(?:http|https)?(?:':'/'/)?(?:www.)?(([A-Za-z0-9-]+'.)*[A-Za-z0-9-]+'.[A-Za-z]+)(?:'/.*)?('s|$)/im
根据问题的变化进行编辑。
问题是正则表达式末尾的.*,所以我的建议是用更精确的表达式替换它。我很快就做好了,你会想做一些测试来验证你的情况
$matches = null;
$returnValue = preg_match_all('!(?:http|https)?(?:'':''/''/)?(?:www.)?(([A-Za-z0-9-]+''.)*[A-Za-z0-9-]+''.[A-Za-z]+)(:[a-zA-Z0-9]*)?/?([a-zA-Z0-9''-''._''?'',''''/''''''+&%''$#''=~])*[^''.'','')''(]!', 'mywebsite.com/index.html others.com/index.html', $matches);
结果:
array (
0 =>
array (
0 => 'mywebsite.com/index.html ',
1 => 'others.com/index.html',
),
1 =>
array (
0 => 'mywebsite.com',
1 => 'others.com',
),
2 =>
array (
0 => '',
1 => '',
),
3 =>
array (
0 => '',
1 => '',
),
4 =>
array (
0 => 'l',
1 => 'm',
),
)
将正则表达式(?:'/.*)?
的最后一个元素更改为'S*
。
正则表达式匹配字符串末尾的所有字符,包括空格,'S*
匹配所有非空格字符。
您还可以将整个正则表达式简化为:
$replace = "~(?:https?://)?(?:www'.)?(([A-Z0-9-]+'.)*[A-Z0-9-]+'.[A-Z]+)'S*~im";
更改regexp模式以捕获最后一个url部分(/index.html
、/index.php
)
/(?:http|https)?(?:':'/'/)?(?:www.)?(([A-Za-z0-9-]+?'.)?[A-Za-z0-9-]+?'.?[A-Za-z]*?('/'w+?'.'w+?)?)'b/im
更改您的功能内容,如下所示:
$content = "http://www.mywebsite.com/index.html http://www.others.com/index.html";
function get_global_convert_all_urls($content) {
$content = strtolower($content);
$replace = "/(?:http|https)?(?:':'/'/)?(?:www.)?(([A-Za-z0-9-]+?'.)?[A-Za-z0-9-]+?'.?[A-Za-z]*?('/'w+?'.'w+?)?)'b/im";
preg_match_all($replace, $content, $search);
foreach ($search[0] as $url) {
if(preg_match('/mywebsite.com/i', $url)) {
$content = str_replace($url, '<a href="'.$url.'">'.$url.'</a>', $content);
} else {
$content = str_replace($url, '@@@spam@@@', $content);
}
}
return $content;
}
var_dump(get_global_convert_all_urls($content));
输出:
string '<a href="http://www.mywebsite.com/index.html">http://www.mywebsite.com/index.html</a> @@@spam@@@'