php DOMDocument 递归 格式化缩进HTML文档，
- WBOYOriginal
- 2016-06-13 08:45:431696browse
php DOMDocument 递归 格式化缩进HTML文档，
<span>function</span> format(\DOMNode <span>$node</span>, <span>$treeIndex</span> = 0<span>)
{
</span><span>//</span><span>不格式化的标签</span>
<span>if</span> (<span>in_array</span>(<span>$node</span>->nodeName, <span>array</span>("title", "p", "span"<span>)))
</span><span>return</span><span>;
</span><span>if</span> (<span>$node</span>-><span>hasChildNodes()) {
</span><span>$treeIndex</span>++<span>;
</span><span>$tabStart</span> = "\r\n" . <span>str_repeat</span>("TTT", <span>$treeIndex</span><span>);
</span><span>$tabEnd</span> = "\r\n" . <span>str_repeat</span>("EEE", <span>$treeIndex</span> - 1<span>);
</span><span>$i</span> = 0<span>;
</span><span>while</span> (<span>$childNode</span> = <span>$node</span>->childNodes->item(<span>$i</span>++<span>)) {
</span><span>if</span> (<span>$childNode</span>->nodeType ==<span> XML_TEXT_NODE) {
</span><span>if</span> (<span>preg_match</span>('#^\s*$#', <span>$childNode</span>-><span>nodeValue)) {
</span><span>$node</span>->removeChild(<span>$childNode</span><span>);
</span><span>$i</span>--<span>;
</span><span>continue</span><span>;
}
</span><span>$childNode</span>->nodeValue = <span>trim</span>(<span>$childNode</span>-><span>nodeValue);
}
</span><span>$node</span>->insertBefore(<span>$node</span>->ownerDocument->createTextNode(<span>$tabStart</span>), <span>$childNode</span><span>);
</span><span>$i</span>++<span>;
</span><span>$this</span>->format(<span>$childNode</span>, <span>$treeIndex</span><span>);
};
</span><span>$node</span>->appendChild(<span>$node</span>->ownerDocument->createTextNode(<span>$tabEnd</span><span>));
}
}
</span><span>$html</span> = '<!DOCTYPE html><html><head><meta charset="utf-8"><title></title></head><body></body></html>'<span>;
</span><span>$doc</span> = <span>new</span><span> \DOMDocument();
</span><span>//</span><span>$doc->formatOutput = true; //不知道是不是我的理解问题，这个选项格式化出来的并不完美</span>
<span>$doc</span>->loadHTML(<span>$html</span>); format(<span>$doc</span>-><span>documentElement);
</span><span>echo</span> <span>$doc</span>->saveHTML();
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：PHP类的静态(static)方法和静态(static)变量，phpstaticNext article：php const与define区别，phpconstdefine