Volker's getOS() function needs to have the order of cases changed in the switch statement since "darwin" contains "win", which means that both "windows" and "darwin" will return self::OS_WIN. I've moved the 'dar' case above the 'win' case:
<?php
class System {
const OS_UNKNOWN = 1;
const OS_WIN = 2;
const OS_LINUX = 3;
const OS_OSX = 4;
/**
* @return int
*/
static public function getOS() {
switch (true) {
case stristr(PHP_OS, 'DAR'): return self::OS_OSX;
case stristr(PHP_OS, 'WIN'): return self::OS_WIN;
case stristr(PHP_OS, 'LINUX'): return self::OS_LINUX;
default : return self::OS_UNKNOWN;
}
}
}
?>
Constantes predefinidas
Core Predefined Constants
These constants are defined by the PHP core. This includes PHP, the Zend engine, and SAPI modules.
-
PHP_VERSION(string) - The current PHP version as a string in "major.minor.release[extra]" notation.
-
PHP_MAJOR_VERSION(int) - The current PHP "major" version as an integer (e.g., int(5) from version "5.2.7-extra").
-
PHP_MINOR_VERSION(int) - The current PHP "minor" version as an integer (e.g., int(2) from version "5.2.7-extra").
-
PHP_RELEASE_VERSION(int) - The current PHP "release" version as an integer (e.g., int(7) from version "5.2.7-extra").
-
PHP_VERSION_ID(int) - The current PHP version as an integer, useful for version comparisons (e.g., int(50207) from version "5.2.7-extra").
-
PHP_EXTRA_VERSION(string) - The current PHP "extra" version as a string (e.g., '-extra' from version "5.2.7-extra"). Often used by distribution vendors to indicate a package version.
-
ZEND_THREAD_SAFE(bool) - Indicates whether the current build of PHP is thread safe.
-
ZEND_DEBUG_BUILD(bool) - Indicates whether the current build of PHP is a debug build.
-
PHP_ZTS(int) - Indicates whether the current build of PHP is thread safe.
-
PHP_DEBUG(int) - Indicates whether the current build of PHP is a debug build.
-
PHP_MAXPATHLEN(int) - The maximum length of filenames (including path) supported by this build of PHP.
-
PHP_OS(string) - The operating system PHP was built for.
-
PHP_OS_FAMILY(string) -
The operating system family PHP was built for. One of
'Windows','BSD','Darwin','Solaris','Linux'or'Unknown'. Available as of PHP 7.2.0. -
PHP_SAPI(string) - The Server API for this build of PHP. See also php_sapi_name().
-
PHP_EOL(string) - The correct 'End Of Line' symbol for this platform.
-
PHP_INT_MAX(int) - The largest integer supported in this build of PHP. Usually int(2147483647) in 32 bit systems and int(9223372036854775807) in 64 bit systems.
-
PHP_INT_MIN(int) - The smallest integer supported in this build of PHP. Usually int(-2147483648) in 32 bit systems and int(-9223372036854775808) in 64 bit systems. Usually, PHP_INT_MIN === ~PHP_INT_MAX.
-
PHP_INT_SIZE(int) - The size of an integer in bytes in this build of PHP.
-
PHP_FLOAT_DIG(int) - Number of decimal digits that can be rounded into a float and back without precision loss. Available as of PHP 7.2.0.
-
PHP_FLOAT_EPSILON(float) -
Smallest representable positive number x, so that
x + 1.0 != 1.0. Available as of PHP 7.2.0. -
PHP_FLOAT_MIN(float) -
Smallest representable positive floating point number.
If you need the smallest representable negative floating point number, use
- PHP_FLOAT_MAX. Available as of PHP 7.2.0. -
PHP_FLOAT_MAX(float) - Largest representable floating point number. Available as of PHP 7.2.0.
-
DEFAULT_INCLUDE_PATH(string) -
PEAR_INSTALL_DIR(string) -
PEAR_EXTENSION_DIR(string) -
PHP_EXTENSION_DIR(string) -
The default directory where to look for dynamically loadable extensions
(unless overridden by extension_dir).
Defaults to
PHP_PREFIX(orPHP_PREFIX . "\\ext"on Windows). -
PHP_PREFIX(string) - The value --prefix was set to at configure. On Windows, it is the value --with-prefix was set to at configure.
-
PHP_BINDIR(string) - The value --bindir was set to at configure. On Windows, it is the value --with-prefix was set to at configure.
-
PHP_BINARY(string) - Specifies the PHP binary path during script execution.
-
PHP_MANDIR(string) - Specifies where the manpages were installed into.
-
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) - The build-platform's shared library suffix, such as "so" (most Unixes) or "dll" (Windows).
-
PHP_FD_SETSIZE(int) - The maximum number of file descriptors for select system calls. Available as of PHP 7.1.0.
-
E_ERROR(int) - Error reporting constant
-
E_WARNING(int) - Error reporting constant
-
E_PARSE(int) - Error reporting constant
-
E_NOTICE(int) - Error reporting constant
-
E_CORE_ERROR(int) - Error reporting constant
-
E_CORE_WARNING(int) - Error reporting constant
-
E_COMPILE_ERROR(int) - Error reporting constant
-
E_COMPILE_WARNING(int) - Error reporting constant
-
E_USER_ERROR(int) - Error reporting constant
-
E_USER_WARNING(int) - Error reporting constant
-
E_USER_NOTICE(int) - Error reporting constant
-
E_RECOVERABLE_ERROR(int) - Error reporting constant.
-
E_DEPRECATED(int) - Error reporting constant.
-
E_USER_DEPRECATED(int) - Error reporting constant.
-
E_ALL(int) - Error reporting constant
-
E_STRICT(int) - Error reporting constant
-
__COMPILER_HALT_OFFSET__(int) -
true(bool) - See Booleans.
-
false(bool) - See Booleans.
-
null(null) - See Null.
-
PHP_WINDOWS_EVENT_CTRL_C(int) -
A Windows
CTRL+Cevent. Available as of PHP 7.4.0 (Windows only). -
PHP_WINDOWS_EVENT_CTRL_BREAK(int) -
A Windows
CTRL+BREAKevent. Available as of PHP 7.4.0 (Windows only).
See also: Magic constants.
Constantes predefinidas estándar
Todas las constantes de extensiones del núcleo están definidas en PHP de manera predeterminada.
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User Contributed Notes 1 note
rdcapasso ¶
11 years ago
