我有以下test.php
文件,当我运行它时,关闭</h1>
标记会被删除。
<?php
$doc = new DOMDocument();
$doc->loadHTML('<html>
<head>
<script>
console.log("<h1>hello</h1>");
</script>
</head>
<body>
</body>
</html>');
echo $doc->saveHTML();
以下是执行文件时的结果:
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>
那么,为什么删除标签呢?这是一个字符串所以不应该忽略它吗?
答案 0 :(得分:2)
我想到的唯一解决方案是preg匹配脚本标记,然后用<script id="myuniqueid"></script>
之类的临时持有者替换它们,并在dom管理结束时再次使用实际脚本替换它们,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;
此解决方案打印干净,没有dom错误。
答案 1 :(得分:2)
将 LIBXML_SCHEMA_CREATE
传递给 loadHTML 选项。这将解决问题。
<?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();
答案 2 :(得分:0)
另一种选择是将</TAG>
替换为<\/TAG>
:
<?php
$html = <<<'EOD'
<!DOCTYPE html>
<html>
<head>
<script>
console.log("<h1>hello</h1>");
var foo = '<a href="#"></a>';
var bar = "<a href=\"#\"></a>";
</script>
</head>
<body>
</body>
</html>
EOD;
preg_match_all('/<script\b[^>]*>.*?<\/script>/s', $html, $matches);
$matches = array_unique( $matches[0] );
if( !empty($matches) ) {
foreach ( $matches as $matches__value ) {
$before = $matches__value;
$after = $matches__value;
preg_match_all('/<\/[a-zA-Z][a-zA-Z0-9]*>/', $matches__value, $matches_inner);
$matches_inner = array_unique( $matches_inner[0] );
if( !empty($matches_inner) ) {
foreach($matches_inner as $matches_inner__value) {
if($matches_inner__value === '</script>') { continue; }
$after = str_replace($matches_inner__value, str_replace('/','\/',$matches_inner__value), $after);
}
$simple[] = $after;
$complete[] = $before;
}
}
$html = str_replace($complete, $simple, $html);
}
$DOMDocument = new \DOMDocument();
$DOMDocument->loadHTML($html);
$html = $DOMDocument->saveHTML();
echo $html;