LXII. libxml Functions

简介

These functions/constants are available since PHP 5.1.0 and if you have compiled one of the extensions based on libxml, like DOM, SimpleXML and XSLT.

需求

This extension requires libxml >= 2.6.0.

预定义类

LibXMLError

属性

  • code - the error's code

  • column - the column where the error occurred. Please note that this property isn't entirely implemented in libxml and therefore 0 is often returned.

  • file - the filename, or empty if the XML was loaded from a string

  • level - the severity of the error (one of the following constants: LIBXML_ERR_WARNING, LIBXML_ERR_ERROR or LIBXML_ERR_FATAL)

  • line - the line where the error occurred

  • message - the error message

预定义常量

以下常量由本扩展模块定义,因此只有在本扩展模块被编译到 PHP 中,或者在运行时被动态加载后才有效。

LIBXML_COMPACT (integer)

Activate small nodes allocation optimization. This may speed up your application without needing to change the code.

注: Only available in Libxml >= 2.6.21

LIBXML_DTDATTR (integer)

Default DTD attributes

LIBXML_DTDLOAD (integer)

Load the external subset

LIBXML_DTDVALID (integer)

Validate with the DTD

LIBXML_NOBLANKS (integer)

Remove blank nodes

LIBXML_NOCDATA (integer)

Merge CDATA as text nodes

LIBXML_NOEMPTYTAG (integer)

Expand empty tags (e.g. <br/> to <br></br>)

注: This option is currently just available in the DOMDocument->save() and DOMDocument->saveXML() functions.

LIBXML_NOENT (integer)

Substitute entities

LIBXML_NOERROR (integer)

Suppress error reports

LIBXML_NONET (integer)

Disable network access when loading documents

LIBXML_NOWARNING (integer)

Suppress warning reports

LIBXML_NOXMLDECL (integer)

Drop the XML declaration when saving a document

注: Only available in Libxml >= 2.6.21

LIBXML_NSCLEAN (integer)

Remove redundant namespaces declarations

LIBXML_XINCLUDE (integer)

Implement XInclude substitution

LIBXML_ERR_ERROR (integer)

A recoverable error

LIBXML_ERR_FATAL (integer)

A fatal error

LIBXML_ERR_NONE (integer)

No errors

LIBXML_ERR_WARNING (integer)

A simple warning

LIBXML_VERSION (integer)

libxml version like 20605 or 20617

LIBXML_DOTTED_VERSION (string)

libxml version like 2.6.5 or 2.6.17

目录
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