Get*_*awn 3 php dom domdocument
我有以下test.php文件,当我运行它时,结束</h1>标记被删除。
<?php
$doc = new DOMDocument();
$doc->loadHTML('<html>
<head>
<script>
console.log("<h1>hello</h1>");
</script>
</head>
<body>
</body>
</html>');
echo $doc->saveHTML();
Run Code Online (Sandbox Code Playgroud)
这是我执行该文件时的结果:
PHP Warning: DOMDocument::loadHTML(): Unexpected end tag : h1 in Entity, line: 4 in /home/ryan/NetBeansProjects/blog/test.php on line 14
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html>
<head>
<script>
console.log("<h1>hello");
</script>
</head>
<body>
</body>
</html>
Run Code Online (Sandbox Code Playgroud)
那么,为什么要删除标签呢?它是一个字符串,所以不应该忽略它吗?
小智 5
想到的唯一解决方案是 preg 匹配脚本标签,然后用临时持有者替换它们,例如<script id="myuniqueid"></script>在 dom 管理结束时再次替换为实际脚本,如下所示:
// The dom doc
$doc = new DOMDocument();
// The html
$html = '<html>
<head>
<script>
console.log("<h1>hello</h1>");
</script>
</head>
<body>
</body>
</html>';
// Patter for scripts
$pattern = "/<script([^']*?)<\/script>/";
// Get all scripts
preg_match_all($pattern, $html, $matches);
// Only unique scripts
$matches = array_unique( $matches[0] );
// Construct the arrays for replacement
foreach ( $matches as $match ) {
// The simple script
$id = uniqid('script_');
$uniqueScript = "<script id=\"$id\"></script>";
$simple[] = $uniqueScript;
// The complete script
$complete[] = $match;
}
// Replace the scripts with the simple scripts
$html = str_replace($complete, $simple, $html);
// load the html into the dom
$doc->loadHTML( $html);
// Do the dom management here
// TODO: Whatever you do with the dom
// When finished
// Get the html back
$html = $doc->saveHTML();
// Replace the scripts back
$html = str_replace($simple, $complete, $html);
//Print the result
echo $html;
Run Code Online (Sandbox Code Playgroud)
该解决方案打印干净,没有 dom 错误。
传递LIBXML_SCHEMA_CREATE给 loadHTML 选项。这将解决这个问题。
<?php
$doc = new DOMDocument();
libxml_use_internal_errors(true);
$doc->loadHTML(
'<html>
<head>
<script>
console.log("<h1>hello</h1>");
</script>
</head>
<body>
</body>
</html>',
LIBXML_HTML_NODEFDTD | LIBXML_SCHEMA_CREATE
);
echo $doc->saveHTML();
Run Code Online (Sandbox Code Playgroud)
| 归档时间: |
|
| 查看次数: |
1513 次 |
| 最近记录: |