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.
This extension requires libxml >= 2.6.0.
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
The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.
Activate small nodes allocation optimization. This may speed up your application without needing to change the code.
Note: Only available in Libxml >= 2.6.21
Default DTD attributes
Load the external subset
Validate with the DTD
Remove blank nodes
Merge CDATA as text nodes
Expand empty tags (e.g. <br/> to <br></br>)
Note: This option is currently just available in the DOMDocument->save() and DOMDocument->saveXML() functions.
Substitute entities
Suppress error reports
Disable network access when loading documents
Suppress warning reports
Drop the XML declaration when saving a document
Note: Only available in Libxml >= 2.6.21
Remove redundant namespaces declarations
Implement XInclude substitution
A recoverable error
A fatal error
No errors
A simple warning
libxml version like 20605 or 20617
libxml version like 2.6.5 or 2.6.17