preg_replace效率

Question

我使用 preg_replace 来实现流行语类型功能，使用流行语列表，在文章中搜索它们，然后使用 preg_replace 将链接包装在它们周围。

我的流行语是：

Online Marketing
Social Media Markeing
Social Media
Social
Brand Marketing
Brand
Search Engine Optimisation
SEO
Email Marketing
Email
Twitter
Facebook
LinkedIn

我正在像这样做我的 preg_replace...

$text = preg_replace("/Online Marketing/", "<a href='".$base."online-marketing/'>Online Marketing</a>", $text);

但问题是我必须为每个可能的变化做一个 preg_replace 就像这样...

$text = preg_replace("/Online Marketing/", "<a href='".$base."online-marketing/'>Online Marketing</a>", $text);
$text = preg_replace("/Online marketing/", "<a href='".$base."online-marketing/'>Online marketing</a>", $text);
$text = preg_replace("/online marketing/", "<a href='".$base."online-marketing/'>online marketing</a>", $text);

这是极其冗长的，现在我知道我可以使用数组与这样的 str_repalce ：

$from = array("Online Marketing", "Online marketing", "online marketing");
$name = str_replace($from, "", $text);

但我看不到一种方法来查找数组的哪一部分匹配，然后将其替换为正确的链接，因为您可以看到上面的 str_replace 完全删除了我的流行语，这只是一个示例。

所以我想知道是否有人能够帮助我找到一种在 str_replace 或 preg_replace 中使用流行语数组的方法，同时确保它用正确的链接替换流行语。

希望有人可以帮忙

Answer 1

$test = preg_replace("/online marketing/i", "<a href='".$base."'online-marketing/'>$0</a>, $text);

或者，如果维持大写并不重要：

$test = str_ireplace("online marketing", "<a href='".$base."'online-marketing/'>online marketing</a>, $text);

Answer 2

函数 preg_replace 可以接收第二个替换数组。
如果您打算始终使用相同的语法，则可以执行循环来生成链接（而不是每次想要拥有元素时自己编写）

$base = 'base/';
$from = array("Online Marketing", "Online test", "offline test");
$to = array();
foreach($from AS $key=>$f) {
   $from[$key] = "/".$f."/";    
   $to[$key]="<a href='".$base.$f."/'>online marketing</a>";
}
$string = 'this is a test using Online Marketing and offline test';
$text = preg_replace($from, $to, $string);

Answer 3

您可以将 str_ireplace() 与数组一起使用（这是不区分大小写的匹配字符串替换），因此如果找到某个匹配项，它将用另一个数组中的相应替换项替换它。

例如：

$needles = array("Online Marketing", "Online Games", "Online Shopping");

$replacements = str_replace('<a href="online_marketing.html>Online Marketing</a>"',
                             '<a href="online_games.html">Online Games</a>',
                             '<a href="online_shopping.html">Online Shopping</a>');

    $replaced = str_ireplace($needles, $replacements);

    // Show the replaced text
    echo $replaced;
);

Answer 4

我混合了你所有的答案，这是我的最终结果...

$Fbuzzwords = array(" online marketing", " social media marketing", " social-media-marketing", " social media", 
                " social", " brand marketing", " brand", " search engine optimisation", " seo", " email marketing", 
                " email", " e-mail marketing", " e-mail", " tiwtter", " facebook", " linkedin");

$Ubuzzwords = array("online-marketing", "social-media-marketing", "social-media-marketing", "social-media-marketing", 
                "social-media-marketing", "brand-marketing", "brand-marketing", "search-engine-optimisation", 
                "search-engine-optimisation", "online-marketing", "online-marketing", "online-marketing", 
                "online-marketing", "social-media-marketing", "social-media-marketing", "social-media-marketing");

$i = 0;

foreach ($Fbuzzwords as $buzzword)
{
    $url = $Ubuzzwords[$i];

    $Rbuzzwords = array(" <a href='".$base.$url."/'>online marketing</a>", " <a href='"
.$base.$url."/'>social media marketing</a>", 
                " <a href='".$base.$url."/'>social-media-marketing</a>", " <a href='".$base.$url."/'>social media</a>", 
                " <a href='".$base.$url."/'>social</a>", " <a href='".$base.$url."/'>brand marketing</a>", 
                " <a href='".$base.$url."/'>brand</a>", " <a href='".$base.$url."/'>search engine optimisation</a>", 
                " <a href='".$base.$url."/'>seo</a>", " <a href='".$base.$url."/'>email marketing</a>", 
                " <a href='".$base.$url."/'>email</a>", " <a href='".$base.$url."/'>e-mail marketing</a>", 
                " <a href='".$base.$url."/'>e-mail</a>", " <a href='".$base.$url."/'>tiwtter</a>", 
                " <a href='".$base.$url."/'>facebook</a>", " <a href='".$base.$url."/'>linkedin</a>");

    $replacement = $Rbuzzwords[$i];

    $text = preg_replace("/$buzzword/i", "$replacement", $text);

    $i++;
}

所以我有 3 个数组，1 个用于查找页面上的单词，2 个用于 url，我循环遍历每个部分的所有文本阵列确保我捕获每一个案例