These constants are defined by the PHP core. This includes PHP, the Zend engine, and SAPI modules.
PHP_VERSION
(string)
PHP_MAJOR_VERSION
(int)
PHP_MINOR_VERSION
(int)
PHP_RELEASE_VERSION
(int)
PHP_VERSION_ID
(int)
PHP_EXTRA_VERSION
(string)
ZEND_THREAD_SAFE
(bool)
ZEND_DEBUG_BUILD
(bool)
PHP_ZTS
(int)
PHP_DEBUG
(int)
PHP_MAXPATHLEN
(int)
PHP_OS
(string)
PHP_OS_FAMILY
(string)
'Windows', 'BSD',
'Darwin', 'Solaris',
'Linux' or 'Unknown'.
Available as of PHP 7.2.0.
PHP_SAPI
(string)
PHP_EOL
(string)
PHP_INT_MAX
(int)
PHP_INT_MIN
(int)
PHP_INT_SIZE
(int)
PHP_FLOAT_DIG
(int)
PHP_FLOAT_EPSILON
(float)
x + 1.0 !=
1.0.
Available as of PHP 7.2.0.
PHP_FLOAT_MIN
(float)
- PHP_FLOAT_MAX.
Available as of PHP 7.2.0.
PHP_FLOAT_MAX
(float)
DEFAULT_INCLUDE_PATH
(string)
PEAR_INSTALL_DIR
(string)
PEAR_EXTENSION_DIR
(string)
PHP_EXTENSION_DIR
(string)
PHP_PREFIX (or PHP_PREFIX . "\\ext" on Windows).
PHP_PREFIX
(string)
PHP_BINDIR
(string)
PHP_BINARY
(string)
PHP_MANDIR
(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)
PHP_FD_SETSIZE
(int)
E_ERROR
(int)
E_WARNING
(int)
E_PARSE
(int)
E_NOTICE
(int)
E_CORE_ERROR
(int)
E_CORE_WARNING
(int)
E_COMPILE_ERROR
(int)
E_COMPILE_WARNING
(int)
E_USER_ERROR
(int)
E_USER_WARNING
(int)
E_USER_NOTICE
(int)
E_RECOVERABLE_ERROR
(int)
E_DEPRECATED
(int)
E_USER_DEPRECATED
(int)
E_ALL
(int)
E_STRICT
(int)
__COMPILER_HALT_OFFSET__
(int)
true
(bool)
false
(bool)
null
(null)
PHP_WINDOWS_EVENT_CTRL_C
(int)
CTRL+C event.
Available as of PHP 7.4.0 (Windows only).
PHP_WINDOWS_EVENT_CTRL_BREAK
(int)
CTRL+BREAK event.
Available as of PHP 7.4.0 (Windows only).
PHP_CLI_PROCESS_TITLE
(bool)
STDERR
(resource)
stderr.
Available only under the CLI SAPI.
STDIN
(resource)
stdin.
Available only under the CLI SAPI.
STDOUT
(resource)
stdout.
Available only under the CLI SAPI.
See also: Magic constants.
Todas las constantes de extensiones del núcleo están definidas en PHP de manera predeterminada.