如何使用正則表達式查找並超鏈接文本中的所有URL？

Question

這裏是我的功能，到目前爲止，它工作得很好，但它啓動超鏈接文本用逗號跟着一行返回：

function linkify($text) { 
    $url = '@(http(s)?)?(://)?(([a-zA-Z])([-\w]+\.)+([^\s\.]+[^\s]*)+[^‌,.\s])@'; 
    $string = preg_replace($url, '<a href="http$2://$4" target="_blank" title="$0">$0</a>', $text); 
    return $string; 
} 

例如：

echo linkify("I went to the local food store and bought some food. 

I was able to find everything."); 

將返回該：

I went to the local food store and bought some <a href="http://seed.&lt;br" target="_blank" title="seed.<br">food.<br< a=""> /&gt; 

<br> 
I was able to find everything.</br<></a> 

有人可以幫我找出我在做什麼錯在這裏嗎？

Answer 1

這會稍微提高原始圖案的準確性。我的模式將以比您的模式快兩倍的速度運行。我刪除了不需要的/未使用的捕獲組，提高了可選的模式精度//，在模式末尾添加了一個不區分大小寫的標誌，刪除了不必要的轉義，爲簡潔起見，基本上簡化了您的模式。

Pattern Demo With Replacement

代碼：（Demo）

function linkify($text){ 
    $capture='@(?:http(s)?://)?([a-z][-\w]+(?:\.\w+)+(?:\S+)?)@i'; 
    $replace='<a href="http$1://$2" target="_blank" title="$0">$0</a>'; 
    $string = preg_replace($capture,$replace,$text); 
    return $string; 
} 

echo linkify("Here is a sentence with a url containing a query string: https://www.google.com/search?q=mickmackusa&oq=mickmackusa&aqs=chrome..69i57j69i60.271j0j7&sourceid=chrome&ie=UTF-8 all good."),"\n\n---\n\n"; 
echo linkify("http://google.com"),"\n\n---\n\n"; 
echo linkify("http://google.com.au"),"\n\n---\n\n"; 
echo linkify("https://google.com.au"),"\n\n---\n\n"; 
echo linkify("www.google.com"),"\n\n---\n\n"; 
echo linkify("google.com"),"\n\n---\n\n"; 
echo linkify("I went to the local food store and bought some food.\n\nI was able to find everything"),"\n\n---\n\n"; 
echo linkify("I went to the local food store and bought some food. 

I was able to find everything"); 

輸出：

Here is a sentence with a url containing a query string: <a href="https://www.google.com/search?q=mickmackusa&oq=mickmackusa&aqs=chrome..69i57j69i60.271j0j7&sourceid=chrome&ie=UTF-8" target="_blank" title="https://www.google.com/search?q=mickmackusa&oq=mickmackusa&aqs=chrome..69i57j69i60.271j0j7&sourceid=chrome&ie=UTF-8">https://www.google.com/search?q=mickmackusa&oq=mickmackusa&aqs=chrome..69i57j69i60.271j0j7&sourceid=chrome&ie=UTF-8</a> all good. 

--- 

<a href="http://google.com" target="_blank" title="http://google.com">http://google.com</a> 

--- 

<a href="http://google.com.au" target="_blank" title="http://google.com.au">http://google.com.au</a> 

--- 

<a href="https://google.com.au" target="_blank" title="https://google.com.au">https://google.com.au</a> 

--- 

<a href="http://www.google.com" target="_blank" title="www.google.com">www.google.com</a> 

--- 

<a href="http://google.com" target="_blank" title="google.com">google.com</a> 

--- 

I went to the local food store and bought some food. 

I was able to find everything 

--- 

I went to the local food store and bought some food. 

I was able to find everything 

這可能不是所有可能的URL的靈丹妙藥，但它是一個合理的基礎。如果您發現某些字符串未按預期更換，則該模式可能需要進行一些調整。

---

模式更新/擴展到包括網址子域：

~(?:ht{2}p(s)?:/{2})?([a-z][-\w.]+(?:\.\w+)+(?:\S+)?)~i 
// new dot here---------------^ 

我僅僅增加了一個點到字符類。