PHP str_replace <tag>東西 - 東西</tag>納入<a href="stuff">Stuff<a href="things">Things?

Question

In $variable I have html code which reads like:`

<tag>Lots of Text Here - More Phrases Here</tag>. 

I'd like to be able to str_replace the string in between the 2 tags

<tag> string </tag> 

I want the new code to read:

<tag><a href="Lots">Lots</a> <a href="of">of</a> 
<a href="text">Text</a> <a href="here">Here</a> - 
<a href="@morephraseshere">@MorePhrasesHere</a></tag> 

I know this might be a lot to str_replace all at once, but if you can at least get either the "Lots of Text Here" to become links, or if you can get the @MorePhrasesHere to become a link it would be amazing.

Or the closest you can get to a full solution would be fantastic as well.

The string of text in $variable changes for each entry. A preg_match or str_explode solution for $variable would be amazing as well if you can't do it in str_replace.

Thank you!

Edit: The objective is to turn every word in the first string into a #hashtag, and every word in the second string into a @username. The server knows how to return valid responses for both types of links.

Answer 1

Here's how I'd do this with preg_match, http://php.net/manual/en/function.preg-match.php。 .表示任何字符，*是一個量詞，意味着0個或更多的前一個字符出現。由於它是.我們允許一切。 ?刪除貪婪所以它正在尋找-的第一次出現，然後我們再次拉動所有其他的東西，直到</tag>。

<?php 
preg_match('~<tag>(.*?)-(.*?)</tag>~', '<tag>Lots of Text Here - More Phrases Here</tag>', $found); 
echo '<a href="#' . urlencode(trim($found[1])) . '">' . trim($found[1]) . '</a>' . "\n"; 
echo '<a href="@' . urlencode(trim($found[2])) . '">' . trim($found[2]) . '">' . '</a>' . "\n"; 
?> 

輸出：

<a href="#Lots+of+Text+Here">Lots of Text Here</a> 
<a href="@More+Phrases+Here">More Phrases Here"></a> 

你應該開始學習的元字符和量詞。這將有助於您在將來編寫自己的正則表達式。你應該瀏覽這個網站;它有點長，但也有很多信息，http://www.regular-expressions.info/php.html

Answer 2

拿這個代碼。沒有什麼可以解釋的

$title = '<tag>Lots of Text Here - More Phrases Here</tag>'; 

preg_match('/<tag>\s*(.+)\s+-\s+(.+)\s*<\/tag>/', $title, $matches); 
$res = '<tag>'; 
$words = explode(' ', $matches[1]); 
foreach ($words as $word) 
    $res .= '<a href="#'.$word.'">'.$word.'</a> '; 
    $after = str_replace(' ','', $matches[2]); 
$res .= '<a href="@'.$after.'">@'.$after.'</a></tag>'; 
echo $res;