echo "<pre>";
print_r(get_defined_constants(true));
echo "</pre>";
/*
run:
Array
(
[Core] => Array
(
[E_ERROR] => 1
[E_RECOVERABLE_ERROR] => 4096
[E_WARNING] => 2
[E_PARSE] => 4
[E_NOTICE] => 8
[E_STRICT] => 2048
[E_DEPRECATED] => 8192
[E_CORE_ERROR] => 16
[E_CORE_WARNING] => 32
[E_COMPILE_ERROR] => 64
[E_COMPILE_WARNING] => 128
[E_USER_ERROR] => 256
[E_USER_WARNING] => 512
[E_USER_NOTICE] => 1024
[E_USER_DEPRECATED] => 16384
[E_ALL] => 32767
[DEBUG_BACKTRACE_PROVIDE_OBJECT] => 1
[DEBUG_BACKTRACE_IGNORE_ARGS] => 2
[TRUE] => 1
[FALSE] =>
[NULL] =>
[ZEND_THREAD_SAFE] => 1
[ZEND_DEBUG_BUILD] =>
[PHP_VERSION] => 5.4.29
[PHP_MAJOR_VERSION] => 5
[PHP_MINOR_VERSION] => 4
[PHP_RELEASE_VERSION] => 29
[PHP_EXTRA_VERSION] =>
[PHP_VERSION_ID] => 50429
[PHP_ZTS] => 1
[PHP_DEBUG] => 0
[PHP_OS] => WINNT
[PHP_SAPI] => cgi-fcgi
[DEFAULT_INCLUDE_PATH] => .;C:\php\pear
[PEAR_INSTALL_DIR] => C:\php\pear
[PEAR_EXTENSION_DIR] => C:\php
[PHP_EXTENSION_DIR] => C:\php
[PHP_PREFIX] => C:\php
[PHP_BINDIR] => C:\php
[PHP_LIBDIR] => C:\php
[PHP_DATADIR] => C:\php
[PHP_SYSCONFDIR] => C:\php
[PHP_LOCALSTATEDIR] => C:\php
[PHP_CONFIG_FILE_PATH] => C:\Windows
[PHP_CONFIG_FILE_SCAN_DIR] =>
[PHP_SHLIB_SUFFIX] => dll
[PHP_EOL] =>
[PHP_MAXPATHLEN] => 260
[PHP_INT_MAX] => 2147483647
[PHP_INT_SIZE] => 4
[PHP_WINDOWS_VERSION_MAJOR] => 6
[PHP_WINDOWS_VERSION_MINOR] => 1
[PHP_WINDOWS_VERSION_BUILD] => 7601
[PHP_WINDOWS_VERSION_PLATFORM] => 2
[PHP_WINDOWS_VERSION_SP_MAJOR] => 1
[PHP_WINDOWS_VERSION_SP_MINOR] => 0
[PHP_WINDOWS_VERSION_SUITEMASK] => 256
[PHP_WINDOWS_VERSION_PRODUCTTYPE] => 1
[PHP_WINDOWS_NT_DOMAIN_CONTROLLER] => 2
[PHP_WINDOWS_NT_SERVER] => 3
[PHP_WINDOWS_NT_WORKSTATION] => 1
[PHP_BINARY] => C:\xampp\php\php-cgi.exe
[PHP_OUTPUT_HANDLER_START] => 1
[PHP_OUTPUT_HANDLER_WRITE] => 0
[PHP_OUTPUT_HANDLER_FLUSH] => 4
[PHP_OUTPUT_HANDLER_CLEAN] => 2
[PHP_OUTPUT_HANDLER_FINAL] => 8
[PHP_OUTPUT_HANDLER_CONT] => 0
[PHP_OUTPUT_HANDLER_END] => 8
[PHP_OUTPUT_HANDLER_CLEANABLE] => 16
[PHP_OUTPUT_HANDLER_FLUSHABLE] => 32
[PHP_OUTPUT_HANDLER_REMOVABLE] => 64
[PHP_OUTPUT_HANDLER_STDFLAGS] => 112
[PHP_OUTPUT_HANDLER_STARTED] => 4096
[PHP_OUTPUT_HANDLER_DISABLED] => 8192
[UPLOAD_ERR_OK] => 0
[UPLOAD_ERR_INI_SIZE] => 1
[UPLOAD_ERR_FORM_SIZE] => 2
[UPLOAD_ERR_PARTIAL] => 3
[UPLOAD_ERR_NO_FILE] => 4
[UPLOAD_ERR_NO_TMP_DIR] => 6
[UPLOAD_ERR_CANT_WRITE] => 7
[UPLOAD_ERR_EXTENSION] => 8
)
[calendar] => Array
(
[CAL_GREGORIAN] => 0
[CAL_JULIAN] => 1
[CAL_JEWISH] => 2
[CAL_FRENCH] => 3
[CAL_NUM_CALS] => 4
[CAL_DOW_DAYNO] => 0
[CAL_DOW_SHORT] => 1
[CAL_DOW_LONG] => 2
[CAL_MONTH_GREGORIAN_SHORT] => 0
[CAL_MONTH_GREGORIAN_LONG] => 1
[CAL_MONTH_JULIAN_SHORT] => 2
[CAL_MONTH_JULIAN_LONG] => 3
[CAL_MONTH_JEWISH] => 4
[CAL_MONTH_FRENCH] => 5
[CAL_EASTER_DEFAULT] => 0
[CAL_EASTER_ROMAN] => 1
[CAL_EASTER_ALWAYS_GREGORIAN] => 2
[CAL_EASTER_ALWAYS_JULIAN] => 3
[CAL_JEWISH_ADD_ALAFIM_GERESH] => 2
[CAL_JEWISH_ADD_ALAFIM] => 4
[CAL_JEWISH_ADD_GERESHAYIM] => 8
)
[date] => Array
(
[DATE_ATOM] => Y-m-d\TH:i:sP
[DATE_COOKIE] => l, d-M-Y H:i:s T
[DATE_ISO8601] => Y-m-d\TH:i:sO
[DATE_RFC822] => D, d M y H:i:s O
[DATE_RFC850] => l, d-M-y H:i:s T
[DATE_RFC1036] => D, d M y H:i:s O
[DATE_RFC1123] => D, d M Y H:i:s O
[DATE_RFC2822] => D, d M Y H:i:s O
[DATE_RFC3339] => Y-m-d\TH:i:sP
[DATE_RSS] => D, d M Y H:i:s O
[DATE_W3C] => Y-m-d\TH:i:sP
[SUNFUNCS_RET_TIMESTAMP] => 0
[SUNFUNCS_RET_STRING] => 1
[SUNFUNCS_RET_DOUBLE] => 2
)
[filter] => Array
(
[INPUT_POST] => 0
[INPUT_GET] => 1
[INPUT_COOKIE] => 2
[INPUT_ENV] => 4
[INPUT_SERVER] => 5
[INPUT_SESSION] => 6
[INPUT_REQUEST] => 99
[FILTER_FLAG_NONE] => 0
[FILTER_REQUIRE_SCALAR] => 33554432
[FILTER_REQUIRE_ARRAY] => 16777216
[FILTER_FORCE_ARRAY] => 67108864
[FILTER_NULL_ON_FAILURE] => 134217728
[FILTER_VALIDATE_INT] => 257
[FILTER_VALIDATE_BOOLEAN] => 258
[FILTER_VALIDATE_FLOAT] => 259
[FILTER_VALIDATE_REGEXP] => 272
[FILTER_VALIDATE_URL] => 273
[FILTER_VALIDATE_EMAIL] => 274
[FILTER_VALIDATE_IP] => 275
[FILTER_DEFAULT] => 516
[FILTER_UNSAFE_RAW] => 516
[FILTER_SANITIZE_STRING] => 513
[FILTER_SANITIZE_STRIPPED] => 513
...
*/
