php preg_replace - 如何删除标签内的内容？
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preg_replace - How to remove contents inside a tag?
提问by Kavin
Say I have this.
说我有这个。
$string = "<div class=\"name\">anyting</div>1234<div class=\"name\">anyting</div>abcd";
$regex = "#([<]div)(.*)([<]/div[>])#";
echo preg_replace($regex,'',$string);
The output is abcd
输出是 abcd
But I want 1234abcd
但我想要 1234abcd
How do I do it?
我该怎么做？
回答by sg3s
Like this:
像这样：
preg_replace('/(<div[^>]*>)(.*?)(<\/div>)/i', '', $string);
If you want to remove the divs too:
如果您也想删除 div：
preg_replace('/<div[^>]*>.*?<\/div>/i', '', $string);
To replace only the content in the divs with class name and not other classes:
只用类名而不是其他类替换 div 中的内容：
preg_replace('/(<div.*?class="name"[^>]*>)(.*?)(<\/div>)/i', '', $string);
回答by CONvid19
$string = "<div class=\"name\">anything</div>1234<div class=\"name\">anything</div>abcd";
echo preg_replace('%<div.*?</div>%i', '', $string); // echo's 1234abcd
Live example:
现场示例：
回答by genesis
add ?, it will find FIRST occurence
添加?，它将找到第一次出现
preg_replace('~<div .*?>(.*?)</div>~','', $string);
回答by Felix Kling
This might be a simple example, but if you have a more complex one, use an HTML/XML parser. For example with DOMDocument:
这可能是一个简单的示例，但如果您有一个更复杂的示例，请使用 HTML/XML 解析器。例如DOMDocument：
$doc = DOMDocument::loadHTML($string);
$xpath = new DOMXPath($doc);
$query = "//body/text()";
$nodes = $xpath->query($query);
$text = "";
foreach($nodes as $node) {
$text .= $node->wholeText;
}
Which query you have to use or whether you have to process the DOM tree in some other way, depends on the particular content you have.
您必须使用哪个查询或是否必须以其他方式处理 DOM 树，取决于您拥有的特定内容。
