Ook-ook? Oooook. Ook ook oook ook oooooook ook ooook ook.
Eek!
'); $document = $out->document; // the parsed document $encoding = $out->encoding; // the canonical name of the detected or supplied encoding $quirks = $out->quirksMode; // the quirks-mode setting of the document, needed for parsing fragments into the document later ``` The API is still in flux, but should be finalized soon. ## Limitations The primary aim of this library is accuracy. If the document object differs from what the specification mandates, this is probably a bug. However, we are also constrained by PHP, which imposes various limtations. These are as follows: - Due to PHP's DOM being designed for XML, element and attribute names which are illegal in XML are mangled as recommended by the specification - PHP's DOM does not allow comments to be inserted outside the root element. The parser will perform the insertions, but the comment nodes are then silently dropped - PHP's DOM has no special understanding of the HTML `` element. Consequently template contents is treated no differently from the children of other elements - PHP's DOM treats `xmlns` attributes specially. Attributes which would change the namespace URI of an element or prefix to inconsistent values are thus dropped - Due to a PHP bug which severely degrades performance with large documents and in consideration of existing PHP software, HTML elements are placed in the null namespace rather than in the HTML namespace - PHP's DOM does not allow DOCTYPEs with no name (i.e. `` rather than ``); in such cases the parser will create a DOCTYPE using a single `U+0020 SPACE` character as its name ## Comparison with `masterminds/html5` 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. | | DOMDocument | Masterminds | MensBeam | |-----------------------------------------------------|---------------------------------------|----------------------------------------------------------|----------------------------------------| | Minimum PHP version | 5.0 | 5.3 | 7.1 | | Extensions required | dom | dom, ctype, mbstring or iconv | dom | | Target HTML version | HTML 4.01 | HTML 5.0 | WHATWG Living Standard | | Supported encodings | System-dependent | System-dependent | [Per specification](https://html.spec.whatwg.org/multipage/parsing.html#character-encodings) | | Encoding detection | BOM, http-equiv | None | [Per specification](https://html.spec.whatwg.org/multipage/parsing.html#determining-the-character-encoding) (Steps 1-5 & 9) | | Fallback encoding | ISO 8859-1 | UTF-8, configurable | Windows-1252, configurable | | Handling of invalid characters | Bytes are passed through | Characters are dropped | [Per specification](https://encoding.spec.whatwg.org/#concept-encoding-process) | | Handling of invalid XML element names | Variable | 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 | Variable | 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 | 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 | 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 | Elements are not inserted | Per specification | | Handling of processing instructions | Retained | Retained | Per specification, configurable | | Handling of bogus XLink namespace\* | Foreign content not supported | XLink attributes are lost if preceded by bogus namespace | Bogus namespace is ignored | | Namespace for HTML elements | Null | Per specification, configurable | Null | | Time needed to parse single-page HTML specification | 0.5 seconds | 2.7 seconds† | 6.0 seconds‡ | | Peak memory needed for same | 11.6 MB | 38 MB | 13.9 MB | \* For example: ``. 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.