使用 PHP 删除 HTML 属性

Question

使用 PHP 我想删除除

之外的所有 HTML 属性

“src” 属性来自 “img” 标签

和

“href” 属性来自 “a” 标记

我的输入文件是由.doc和.docx

转换而来的.html文件

我的输出文件再次应该是 HTML 文件 删除属性

请帮帮我

编辑 ::

在尝试如下亚历山大脚本后，如果我在代码编辑器中打开 strip.html，我看不到任何更改

<?php
$path = '/var/www/strip.html';
$html = file_get_contents($path);
$dom = new DOMDocument();
$dom->strictErrorChecking = false;
$dom->formatOutput = true;
$dom->loadHTML($html);

$xpath = new DOMXPath($dom);
if (false === ($elements = $xpath->query("//img"))) die('Error');

foreach ($elements as $element) {
    for ($i = $element->attributes->length; --$i >= 0;) {
        $name = $element->attributes->item($i)->name;
        if ('src' !== $name) {
            $element->removeAttribute($name);
        }
    }
}

if (false === ($elements = $xpath->query("//a"))) die('Error');

foreach ($elements as $element) {
    for ($i = $element->attributes->length; --$i >= 0;) {
        $name = $element->attributes->item($i)->name;
        if ('href' !== $name) {
            $element->removeAttribute($name);
        }
    }
}

$dom->saveHTMLFile($path);

?>

Answer 1

使用DOMDocument类解析HTML（"a"和"img"标签处理）：

$path = '/path/to/file.html';
$html = file_get_contents($path);
$dom = new DOMDocument();
//$dom->strictErrorChecking = false;
$dom->formatOutput = true;
$dom->loadHTML($html);

$xpath = new DOMXPath($dom);
if (false === ($elements = $xpath->query("//img"))) die('Error');

foreach ($elements as $element) {
    for ($i = $element->attributes->length; --$i >= 0;) {
        $name = $element->attributes->item($i)->name;
        if ('src' !== $name) {
            $element->removeAttribute($name);
        }
    }
}

if (false === ($elements = $xpath->query("//a"))) die('Error');

foreach ($elements as $element) {
    for ($i = $element->attributes->length; --$i >= 0;) {
        $name = $element->attributes->item($i)->name;
        if ('href' !== $name) {
            $element->removeAttribute($name);
        }
    }
}

$dom->saveHTMLFile($path);

另外，阅读why you can't parse [X]HTML with regex 并查看useful xpath links。

更新（所有标签除了"a"和"img"属性处理）：

$path = '/path/to/file.html';
$html = file_get_contents($path);
$dom = new DOMDocument();
//$dom->strictErrorChecking = false;
$dom->formatOutput = true;
$dom->loadHTML($html);

$xpath = new DOMXPath($dom);
if (false === ($elements = $xpath->query("//*"))) die('Error');

foreach ($elements as $element) {
    for ($i = $element->attributes->length; --$i >= 0;) {
        $name = $element->attributes->item($i)->name;
        if (('img' === $element->nodeName && 'src' === $name)
            || ('a' === $element->nodeName && 'href' === $name)
        ) {
            continue;
        }

        $element->removeAttribute($name);
    }
}

$dom->saveHTMLFile($path);