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ReflectionExtension::getConstants

(PHP 5, PHP 7, PHP 8)

ReflectionExtension::getConstants — Gets constants

Description

public ReflectionExtension::getConstants(): array

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