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Note handling of bogus XLink namespace

split-manual
J. King 3 years ago
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      README.md

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@ -21,24 +21,27 @@ $dom->loadHTML('<!DOCTYPE html><html lang="en" charset="utf-8"><head><title>Ook!
This library and [masterminds/html5](https://packagist.org/packages/masterminds/html5) serve similar purposes. Generally, we are more accurate, but they are much faster. The following table summarizes the main functional differences.
| | Masterminds | MensBeam |
|-----------------------------------------------------|---------------------------------------|----------------------------------------|
| Minimum PHP version | 5.3 | 7.1 |
| Extensions required | dom, ctype, mbstring or iconv | dom |
| Supported encodings | System-dependent | [Per specification](https://html.spec.whatwg.org/multipage/parsing.html#character-encodings) |
| Encoding detection | None | Byte order mark, HTTP header, [pre-scan](https://html.spec.whatwg.org/multipage/parsing.html#prescan-a-byte-stream-to-determine-its-encoding) |
| Fallback encoding | UTF-8, configurable | Windows-1252, configurable |
| Handling of invalid characters | Characters are dropped | [Per specification](https://encoding.spec.whatwg.org/#concept-encoding-process) |
| Handling of invalid XML element names | Name is changed to "invalid" | [Per specification](https://html.spec.whatwg.org/multipage/parsing.html#coercing-an-html-dom-into-an-infoset) |
| Handling of invalid XML attribute names | Attribute is dropped | [Per specification](https://html.spec.whatwg.org/multipage/parsing.html#coercing-an-html-dom-into-an-infoset) |
| Handling of misnested tags | Parent end tags always close children | [Per specification](https://html.spec.whatwg.org/multipage/parsing.html#an-introduction-to-error-handling-and-strange-cases-in-the-parser) |
| Handling of data between table cells | Left as-is | [Per specification](https://html.spec.whatwg.org/multipage/parsing.html#an-introduction-to-error-handling-and-strange-cases-in-the-parser) |
| Handling of omitted start tags | Elements are not inserted | Per specification |
| Handling of processing instructions | Processing instructions are retained | Per specification |
| Namespace for HTML elements | Per specification, configurable | Null |
| Time needed to parse single-page HTML specification | 2.8 seconds† | 7.0 seconds†† |
| Peak memory needed for same | 38 MB | 13.9 MB |
| | Masterminds | MensBeam |
|-----------------------------------------------------|----------------------------------------------------------|----------------------------------------|
| Minimum PHP version | 5.3 | 7.1 |
| Extensions required | dom, ctype, mbstring or iconv | dom |
| Supported encodings | System-dependent | [Per specification](https://html.spec.whatwg.org/multipage/parsing.html#character-encodings) |
| Encoding detection | None | Byte order mark, HTTP header, [pre-scan](https://html.spec.whatwg.org/multipage/parsing.html#prescan-a-byte-stream-to-determine-its-encoding) |
| Fallback encoding | UTF-8, configurable | Windows-1252, configurable |
| Handling of invalid characters | Characters are dropped | [Per specification](https://encoding.spec.whatwg.org/#concept-encoding-process) |
| Handling of invalid XML element names | Name is changed to "invalid" | [Per specification](https://html.spec.whatwg.org/multipage/parsing.html#coercing-an-html-dom-into-an-infoset) |
| Handling of invalid XML attribute names | Attribute is dropped | [Per specification](https://html.spec.whatwg.org/multipage/parsing.html#coercing-an-html-dom-into-an-infoset) |
| Handling of misnested tags | Parent end tags always close children | [Per specification](https://html.spec.whatwg.org/multipage/parsing.html#an-introduction-to-error-handling-and-strange-cases-in-the-parser) |
| Handling of data between table cells | Left as-is | [Per specification](https://html.spec.whatwg.org/multipage/parsing.html#an-introduction-to-error-handling-and-strange-cases-in-the-parser) |
| Handling of omitted start tags | Elements are not inserted | Per specification |
| Handling of processing instructions | Processing instructions are retained | Per specification |
| Handling of bogus XLink namespace\* | XLink attributes are lost if preceded by bogus namespace | Bogus namespace is ignored |
| Namespace for HTML elements | Per specification, configurable | Null |
| Time needed to parse single-page HTML specification | 2.8 seconds† | 7.0 seconds‡ |
| Peak memory needed for same | 38 MB | 13.9 MB |
\* For example: `<svg xmlns:xlink='http://www.w3.org/1999/xhtml' xlink:href='http://example.com/'/>`. It is unclear what correct behaviour is, but we believe our behaviour to be more consistent with the intent of the specification.
† With HTML namespace disabled. With HTML namespace enabled it does not finish in a reasonable time due to a PHP bug.
†† With parse errors suppressed. Reporting parse errors adds approximately 10% overhead
‡ With parse errors suppressed. Reporting parse errors adds approximately 10% overhead.

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