php preg_replace 怎么不改网址

Question

ts in html内容应替换为s.

例如： sanktsya => sanksya

这就是它工作正常的方式。

但是 a 或 img urls 正在改变。

如何不更改网址？

我的代码

$str='<p>sanktsya boshlandi.</p>
<p><img src="https://img.com/Sqstso.jpeg" /></p>';

$result = preg_replace("/([qwrtpsdfghklzxcvbnmQWRTPSDFGHKLZXCVBNM]+)[tT]s/", "${1}s", $str);

Answer 1

正如@nick 所说，这是 DOM 的任务。 DOM 结构由不同的节点（元素、注释、文本节点...）组成。使用 Xpath，您可以按类型寻址节点。

您的字符串看起来像一个 XHTML 片段字符串，所以这里有一个例子：

$xhtml = <<<'XHTML'
<p>sanktsya boshlandi.</p>
<p><img src="https://img.com/Sqstso.jpeg" /></p>
XHTML;

// bootstrap DOM
$document = new DOMDocument();
$xpath = new DOMXpath($document);

// create a fragment node and append XML content
$fragment = $document->createDocumentFragment();
$fragment->appendXML($xhtml);

// iterate any descendant text node
foreach($xpath->evaluate('.//text()', $fragment) as $textNode) {
    // modify node text content
    $textNode->textContent = preg_replace(
        '(([qwrtpsdfghklzxcvbnmQWRTPSDFGHKLZXCVBNM]+)[tT]s)', 
        's',
        $textNode->textContent
    );
}

// save XHTML fragment string
echo $document->saveXML($fragment);

Answer 2

使用

$result = preg_replace("/<[^>]*>(*SKIP)(*FAIL)|[qwrtpsdfghklzxcvbnm]+\Kts/i", "s", $str);

参见regex proof。

解释

NODE                     EXPLANATION
--------------------------------------------------------------------------------
  <                        '<'
--------------------------------------------------------------------------------
  [^>]*                    any character except: '>' (0 or more times
                           (matching the most amount possible))
--------------------------------------------------------------------------------
  >                        '>'
--------------------------------------------------------------------------------
 (*SKIP)(*FAIL)            Skip current match, resume search from current position
--------------------------------------------------------------------------------
 |                        OR
--------------------------------------------------------------------------------
  [qwrtpsdfghklzxcvbnm     any character of: 'q', 'w', 'r', 't', 'p',
  ]+                       's', 'd', 'f', 'g', 'h', 'k', 'l', 'z',
                           'x', 'c', 'v', 'b', 'n', 'm' (1 or more
                           times (matching the most amount possible))
--------------------------------------------------------------------------------
  \K                       Match reset operator, discards text from match
--------------------------------------------------------------------------------
  ts                       'ts'

php preg_replace 怎么不改网址

php preg_replace how not changing urls

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