Core Predefined Constants
These constants are defined by the PHP core. This includes PHP,
the Zend engine, and SAPI modules.
PHP_VERSION (string)
PHP_MAJOR_VERSION (integer)
Available since PHP 5.2.7.
PHP_MINOR_VERSION (integer)
Available since PHP 5.2.7.
PHP_RELEASE_VERSION (integer)
Available since PHP 5.2.7.
PHP_VERSION_ID (integer)
Available since PHP 5.2.7.
PHP_EXTRA_VERSION (string)
Available since PHP 5.2.7.
PHP_ZTS
(integer)
Available since PHP 5.2.7.
PHP_DEBUG
(integer)
Available since PHP 5.2.7.
PHP_MAXPATHLEN (integer)
Available since PHP 5.3.0.
PHP_OS
(string)
PHP_SAPI
(string)
Available since PHP 4.2.0. See also php_sapi_name().
PHP_EOL
(string)
Available since PHP 4.3.10 and PHP 5.0.2
PHP_INT_MAX (integer)
Available since PHP 4.4.0 and PHP 5.0.5
PHP_INT_SIZE (integer)
Available since PHP 4.4.0 and PHP 5.0.5
DEFAULT_INCLUDE_PATH (string)
PEAR_INSTALL_DIR (string)
PEAR_EXTENSION_DIR (string)
PHP_EXTENSION_DIR (string)
PHP_PREFIX (string)
Available since PHP 4.3.0
PHP_BINDIR (string)
PHP_LIBDIR (string)
PHP_DATADIR (string)
PHP_SYSCONFDIR (string)
PHP_LOCALSTATEDIR (string)
PHP_CONFIG_FILE_PATH (string)
PHP_CONFIG_FILE_SCAN_DIR (string)
PHP_SHLIB_SUFFIX (string)
Available since PHP 4.3.0
PHP_OUTPUT_HANDLER_START (integer)
PHP_OUTPUT_HANDLER_CONT (integer)
PHP_OUTPUT_HANDLER_END (integer)
PHP_WINDOWS_VERSION_MAJOR (integer)
Available since PHP 5.3.0
PHP_WINDOWS_VERSION_MINOR (integer)
Available since PHP 5.3.0
PHP_WINDOWS_VERSION_BUILD (integer)
Available since PHP 5.3.0
PHP_WINDOWS_VERSION_PLATFORM (integer)
Available since PHP 5.3.0
PHP_WINDOWS_VERSION_SP_MAJOR (integer)
Available since PHP 5.3.0
PHP_WINDOWS_VERSION_SP_MINOR (integer)
Available since PHP 5.3.0
PHP_WINDOWS_VERSION_SUITEMASK (integer)
Available since PHP 5.3.0
PHP_WINDOWS_VERSION_PRODUCTTYPE (integer)
Available since PHP 5.3.0
PHP_WINDOWS_NT_DOMAIN_CONTROLLER (integer)
Available since PHP 5.3.0
PHP_WINDOWS_NT_SERVER (integer)
Available since PHP 5.3.0
PHP_WINDOWS_NT_WORKSTATION (integer)
Available since PHP 5.3.0
E_ERROR
(integer)
E_WARNING
(integer)
E_PARSE
(integer)
E_NOTICE
(integer)
E_CORE_ERROR (integer)
E_CORE_WARNING (integer)
E_COMPILE_ERROR (integer)
E_COMPILE_WARNING (integer)
E_USER_ERROR (integer)
E_USER_WARNING (integer)
E_USER_NOTICE (integer)
E_DEPRECATED (integer)
Available since PHP 5.3.0
E_USER_DEPRECATED (integer)
Available since PHP 5.3.0
E_ALL (integer)
E_STRICT
(integer)
Available since PHP 5.0.0
__COMPILER_HALT_OFFSET__ (integer)
Available since PHP 5.1.0
TRUE (boolean)
See Booleans.
FALSE (boolean)
See Booleans.
NULL (boolean)
See Null.
See also: Magic constants.
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