PHP libxml Introduction
The libxml functions and constants are used together with SimpleXML, XSLT and DOM functions.
Installation
These functions require the libxml package. Download at xmlsoft.org
PHP libxml Functions
PHP: indicates the earliest version of PHP that supports the function.
| Function | Description |
|---|---|
| libxml_clear_errors() | Clear libxml error buffer |
| libxml_get_errors() | Retrieve array of errors |
| libxml_get_last_error() | Retrieve last error from libxml |
| libxml_set_streams_context() | Set the streams context for the next libxml document load or write |
| libxml_use_internal_errors() | Disable libxml errors and allow user to fetch error information as needed |
PHP 5 Predefined libxml Constants
| Function | Description |
|---|---|
| LIBXML_COMPACT | Set small nodes allocation optimization. This may improve the application performance |
| LIBXML_DTDATTR | Set default DTD attributes |
| LIBXML_DTDLOAD | Load external subset |
| LIBXML_DTDVALID | Validate with the DTD |
| LIBXML_NOBLANKS | Remove blank nodes |
| LIBXML_NOCDATA | Set CDATA as text nodes |
| LIBXML_NOEMPTYTAG | Change empty tags (e.g. <br/> to <br></br>), only available in the DOMDocument->save() and DOMDocument->saveXML() functions |
| LIBXML_NOENT | Substitute entities |
| LIBXML_NOERROR | Do not show error reports |
| LIBXML_NONET | Stop network access while loading documents |
| LIBXML_NOWARNING | Do not show warning reports |
| LIBXML_NOXMLDECL | Drop the XML declaration when saving a document |
| LIBXML_NSCLEAN | Remove excess namespace declarations |
| LIBXML_XINCLUDE | Use XInclude substitution |
| LIBXML_ERR_ERROR | Get recoverable errors |
| LIBXML_ERR_FATAL | Get fatal errors |
| LIBXML_ERR_NONE | Get no errors |
| LIBXML_ERR_WARNING | Get simple warnings |
| LIBXML_VERSION | Get libxml version (e.g. 20605 or 20617) |
| LIBXML_DOTTED_VERSION | Get dotted libxml version (e.g. 2.6.5 or 2.6.17) |