php - 如何在 PHP 中替换第一个 HTML 标签

Question

我有一个 PHP 文本字符串:

<strong> MOST </strong> of you may have a habit of wearing socks while sleeping. 
<strong> Wear socks while sleeping to prevent cracking feet</strong>
<strong> Socks helps to relieve sweaty feet</strong>

我们可以看到，第一个强标签是

<strong> MOST </strong>

我想删除第一个强标签，并将其中的单词变成ucwords(首字母大写)。这样的结果

Most of you may have a habit of wearing socks while sleeping. 
<strong> Wear socks while sleeping to prevent cracking feet</strong>
<strong> Socks helps to relieve sweaty feet</strong>

我试过爆炸功能，但它似乎不是我想要的。这是我的代码

<?php
$text = "<strong>MOST</strong> of you may have a habit of wearing socks while sleeping. <strong> Wear socks while sleeping to prevent cracking feet</strong>. <strong> Socks helps to relieve sweaty feet</strong>";
$context = explode('</strong>',$text);
$context = ucwords(str_replace('<strong>','',strtolower($context[0]))).$context[1];
echo $context;
?>

我的代码唯一的结果

Most of you may have a habit of wearing socks while sleeping. <strong> Wear socks while sleeping to prevent cracking feet

Answer 1

您可以使用 explode 的可选 limit 参数修复您的代码:

$context = explode("</strong>",$text,2);

但是，这样会更好:

$context = preg_replace_callback("(<strong>(.*?)</strong>)",function($a) {return ucfirst($a[1]);},$text);