libxml_disable_entity_loader

(PHP 5 >= 5.2.11, PHP 7, PHP 8)

libxml_disable_entity_loader — Disable the ability to load external entities

警告

本函数已自 PHP 8.0.0 起被废弃。强烈建议不要依赖本函数。

说明

libxml_disable_entity_loader(bool $disable = true): bool

Disable/enable the ability to load external entities. Note that disabling the loading of external entities may cause general issues with loading XML documents.

As of libxml 2.9.0 entity substitution is disabled by default, so there is no need to disable the loading of external entities, unless there is the need to resolve internal entity references with LIBXML_NOENT, LIBXML_DTDVALID, or LIBXML_DTDLOAD. Generally, it is preferable to use libxml_set_external_entity_loader() to suppress loading of external entities. The LIBXML_NO_XXE constant can be used to prevent this as well (only available in Libxml >= 2.13.0, as of PHP 8.4.0).

参数

disable: Disable (true) or enable (false) libxml extensions (such as DOM, XMLWriter and XMLReader) to load external entities.

返回值

Returns the previous value.

参见

libxml_use_internal_errors() - Disable libxml errors and allow user to fetch error information as needed
libxml_set_external_entity_loader() - Changes the default external entity loader
The LIBXML_NOENT constant
The LIBXML_DTDVALID constant
The LIBXML_NO_XXE constant