[英]PHP regex to clean a specific string from URLs only
任何正则表达的忍者在那里想出一个PHP解决方案来清除任何http / url中的标签,但是将标签留在文本的其余部分?
例如:
the word <cite>printing</cite> is in http://www.thisis<cite>printing</cite>.com
应成为:
the word <cite>printing</cite> is in http://www.thisisprinting.com
这就是我要做的:
<?php
//a callback function wrapper for strip_tags
function strip($matches){
return strip_tags($matches[0]);
}
//the string
$str = "the word <cite>printing<cite> is in http://www.thisis<cite>printing</cite>.com";
//match a url and call the strip callback on it
$str = preg_replace_callback("/:\/\/[^\s]*/", 'strip', $str);
//prove that it works
var_dump(htmlentities($str));
适合此替换的正则表达式可能是:
#(https?://)(.*?)<cite>(.*?)</cite>([^\s]*)#s
s
标志在所有换行符中匹配。
在标签之间使用lazy
选择,以准确无法逃避更多类似的标签
片段:
<?php
$str = "the word <cite>printing<cite> is in http://www.thisis<cite>printing</cite>.com";
$replaced = preg_replace('#(https?://)(.*?)<cite>(.*?)</cite>([^\s]*)#s', "$1$2$3$4", $str);
echo $replaced;
// Output: the word <cite>printing<cite> is in http://www.thisisprinting.com
假设您可以从文本中识别URL,您可以:
$str = 'http://www.thisis<cite>printing</cite>.com';
$str = preg_replace('~</?cite>~i', "", $str);
echo $str;
OUTPUT:
http://www.thisisprinting.com
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