php - 遇到 PHP preg_replace 问题

Question

好吧，假设我有以下文本...

<h2><a name="test1"></a>Test 1</h2>test 1 text
<h2><a name="test2"></a>Test 2</h2>
test 2 text
<h3><a name="test3"></a>Test 3</h3>
test
3
text
<h4><a name="test4"></a>Test 4</h4>
<h4><a name="test5"></a>Test 5</h4>test 5 text

我想使用正则表达式将该文本替换为以下内容:

<div class="toggle">
    <h2><a name="test1"></a>Test 1</h2>
    <div class="contents">test 1 text</div>
</div>
<div class="toggle">
    <h2><a name="test1"></a>Test 2</h2>
    <div class="contents">test 2 text</div>
</div>
<div class="toggle">
    <h3><a name="test1"></a>Test 3</h3>
    <div class="contents">test
3
text</div>
</div>
<div class="toggle">
    <h4><a name="test1"></a>Test 4</h4>
    <div class="contents"></div>
</div>
<div class="toggle">
    <h4><a name="test1"></a>Test 5</h4>
    <div class="contents">test 5 text</div>
</div>

我尝试使用:

$text = preg_replace('#<h(\d+)>(.*?)</h\1>(.*)#si', '<div class="ToggleContents"><h$1>$2</h$1><div class="contents">$3</div></div>', $text);

但问题是它太贪婪了，我还没有想出如何让它变得不贪婪并起作用。有人有什么想法吗？

Answer 1

$text = '<h2><a name="test1"></a>Test 1</h2> test 1 text
<h2><a name="test2"></a>Test 2</h2> test 2 text
<h3><a name="test3"></a>Test 3</h3> test 3 text
<h4><a name="test4"></a>Test 4</h4> test 4 text
<h4><a name="test5"></a>Test 5</h4> test 5 text';

$text = preg_replace('#<h([1|2|3|4|5|6])>(.*?)</h([1|2|3|4|5|6])>\ (.*?)(\n|$)#si', '
<div class="toggle">
  <h\\1>\\2</h\\1>
  <div class="contents">\\4</div>
</div>
', $text);

或者 <span>解决方案:

$text = '<h2><a name="test1"></a>Test 1</h2><span>test 1 text</span>
<h2><a name="test2"></a>Test 2</h2><span>test 2 text</span>
<h3><a name="test3"></a>Test 3</h3><span>test 3 text</span>
<h4><a name="test4"></a>Test 4</h4><span>test 4 text</span>
<h4><a name="test5"></a>Test 5</h4><span>test 5 text</span>';

$text = preg_replace('#<h([1|2|3|4|5|6])>(.*?)</h([1|2|3|4|5|6])><span>(.*?)</span>#si', '
<div class="toggle">
  <h\\1>\\2</h\\1>
  <div class="contents">\\4</div>
</div>
', $text);