Gets constants

ReflectionExtension::getClassNames
ReflectionExtension::getDependencies
ReflectionExtension
PHP Manual

# ReflectionExtension::getConstants

(PHP 5)

ReflectionExtension::getConstants — Gets constants

### Description

public array ReflectionExtension::getConstants ( void )

Get defined constants from an extension.

### Parameters

This function has no parameters.

### Return Values

An associative array with constant names as keys.

### Examples

Example #1 ReflectionExtension::getConstants example

`<?php
$ext = new ReflectionExtension('DOM');
print_r($ext->getConstants());
?>`

The above example will output something similar to:

    Array
    (
        [XML_ELEMENT_NODE] => 1
        [XML_ATTRIBUTE_NODE] => 2
        [XML_TEXT_NODE] => 3
        [XML_CDATA_SECTION_NODE] => 4
        [XML_ENTITY_REF_NODE] => 5
        [XML_ENTITY_NODE] => 6
        [XML_PI_NODE] => 7
        [XML_COMMENT_NODE] => 8
        [XML_DOCUMENT_NODE] => 9
        [XML_DOCUMENT_TYPE_NODE] => 10
        [XML_DOCUMENT_FRAG_NODE] => 11
        [XML_NOTATION_NODE] => 12
        [XML_HTML_DOCUMENT_NODE] => 13
        [XML_DTD_NODE] => 14
        [XML_ELEMENT_DECL_NODE] => 15
        [XML_ATTRIBUTE_DECL_NODE] => 16
        [XML_ENTITY_DECL_NODE] => 17
        [XML_NAMESPACE_DECL_NODE] => 18
        [XML_LOCAL_NAMESPACE] => 18
        [XML_ATTRIBUTE_CDATA] => 1
        [XML_ATTRIBUTE_ID] => 2
        [XML_ATTRIBUTE_IDREF] => 3
        [XML_ATTRIBUTE_IDREFS] => 4
        [XML_ATTRIBUTE_ENTITY] => 6
        [XML_ATTRIBUTE_NMTOKEN] => 7
        [XML_ATTRIBUTE_NMTOKENS] => 8
        [XML_ATTRIBUTE_ENUMERATION] => 9
        [XML_ATTRIBUTE_NOTATION] => 10
        [DOM_PHP_ERR] => 0
        [DOM_INDEX_SIZE_ERR] => 1
        [DOMSTRING_SIZE_ERR] => 2
        [DOM_HIERARCHY_REQUEST_ERR] => 3
        [DOM_WRONG_DOCUMENT_ERR] => 4
        [DOM_INVALID_CHARACTER_ERR] => 5
        [DOM_NO_DATA_ALLOWED_ERR] => 6
        [DOM_NO_MODIFICATION_ALLOWED_ERR] => 7
        [DOM_NOT_FOUND_ERR] => 8
        [DOM_NOT_SUPPORTED_ERR] => 9
        [DOM_INUSE_ATTRIBUTE_ERR] => 10
        [DOM_INVALID_STATE_ERR] => 11
        [DOM_SYNTAX_ERR] => 12
        [DOM_INVALID_MODIFICATION_ERR] => 13
        [DOM_NAMESPACE_ERR] => 14
        [DOM_INVALID_ACCESS_ERR] => 15
        [DOM_VALIDATION_ERR] => 16
    )

### See Also

- ReflectionExtension::getINIEntries - Gets extension ini entries

ReflectionExtension::getClassNames
ReflectionExtension::getDependencies
ReflectionExtension
PHP Manual