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這些常量在 PHP 的內(nèi)核中定義。它包含 PHP、Zend 引擎和 SAPI 模塊。
PHP_VERSION
(string)PHP_OS
(string)PHP_SAPI
(string)PHP_EOL
(string)PHP_INT_MAX
(integer)PHP_INT_SIZE
(integer)DEFAULT_INCLUDE_PATH
(string)PEAR_INSTALL_DIR
(string)PEAR_EXTENSION_DIR
(string)PHP_EXTENSION_DIR
(string)PHP_PREFIX
(string)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)PHP_OUTPUT_HANDLER_START
(integer)PHP_OUTPUT_HANDLER_CONT
(integer)PHP_OUTPUT_HANDLER_END
(integer)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_ALL
(integer)E_STRICT
(integer)__COMPILER_HALT_OFFSET__
(integer)這些常量是 PHP 默認(rèn)定義的。
EXTR_OVERWRITE
(integer)EXTR_SKIP
(integer)EXTR_PREFIX_SAME
(integer)EXTR_PREFIX_ALL
(integer)EXTR_PREFIX_INVALID
(integer)EXTR_PREFIX_IF_EXISTS
(integer)EXTR_IF_EXISTS
(integer)SORT_ASC
(integer)SORT_DESC
(integer)SORT_REGULAR
(integer)SORT_NUMERIC
(integer)SORT_STRING
(integer)CASE_LOWER
(integer)CASE_UPPER
(integer)COUNT_NORMAL
(integer)COUNT_RECURSIVE
(integer)ASSERT_ACTIVE
(integer)ASSERT_CALLBACK
(integer)ASSERT_BAIL
(integer)ASSERT_WARNING
(integer)ASSERT_QUIET_EVAL
(integer)CONNECTION_ABORTED
(integer)CONNECTION_NORMAL
(integer)CONNECTION_TIMEOUT
(integer)INI_USER
(integer)INI_PERDIR
(integer)INI_SYSTEM
(integer)INI_ALL
(integer)M_E
(float)M_LOG2E
(float)M_LOG10E
(float)M_LN2
(float)M_LN10
(float)M_PI
(float)M_PI_2
(float)M_PI_4
(float)M_1_PI
(float)M_2_PI
(float)M_2_SQRTPI
(float)M_SQRT2
(float)M_SQRT1_2
(float)CRYPT_SALT_LENGTH
(integer)CRYPT_STD_DES
(integer)CRYPT_EXT_DES
(integer)CRYPT_MD5
(integer)CRYPT_BLOWFISH
(integer)DIRECTORY_SEPARATOR
(string)SEEK_SET
(integer)SEEK_CUR
(integer)SEEK_END
(integer)LOCK_SH
(integer)LOCK_EX
(integer)LOCK_UN
(integer)LOCK_NB
(integer)HTML_SPECIALCHARS
(integer)HTML_ENTITIES
(integer)ENT_COMPAT
(integer)ENT_QUOTES
(integer)ENT_NOQUOTES
(integer)INFO_GENERAL
(integer)INFO_CREDITS
(integer)INFO_CONFIGURATION
(integer)INFO_MODULES
(integer)INFO_ENVIRONMENT
(integer)INFO_VARIABLES
(integer)INFO_LICENSE
(integer)INFO_ALL
(integer)CREDITS_GROUP
(integer)CREDITS_GENERAL
(integer)CREDITS_SAPI
(integer)CREDITS_MODULES
(integer)CREDITS_DOCS
(integer)CREDITS_FULLPAGE
(integer)CREDITS_QA
(integer)CREDITS_ALL
(integer)STR_PAD_LEFT
(integer)STR_PAD_RIGHT
(integer)STR_PAD_BOTH
(integer)PATHINFO_DIRNAME
(integer)PATHINFO_BASENAME
(integer)PATHINFO_EXTENSION
(integer)PATH_SEPARATOR
(string)CHAR_MAX
(integer)LC_CTYPE
(integer)LC_NUMERIC
(integer)LC_TIME
(integer)LC_COLLATE
(integer)LC_MONETARY
(integer)LC_ALL
(integer)LC_MESSAGES
(integer)ABDAY_1
(integer)ABDAY_2
(integer)ABDAY_3
(integer)ABDAY_4
(integer)ABDAY_5
(integer)ABDAY_6
(integer)ABDAY_7
(integer)DAY_1
(integer)DAY_2
(integer)DAY_3
(integer)DAY_4
(integer)DAY_5
(integer)DAY_6
(integer)DAY_7
(integer)ABMON_1
(integer)ABMON_2
(integer)ABMON_3
(integer)ABMON_4
(integer)ABMON_5
(integer)ABMON_6
(integer)ABMON_7
(integer)ABMON_8
(integer)ABMON_9
(integer)ABMON_10
(integer)ABMON_11
(integer)ABMON_12
(integer)MON_1
(integer)MON_2
(integer)MON_3
(integer)MON_4
(integer)MON_5
(integer)MON_6
(integer)MON_7
(integer)MON_8
(integer)MON_9
(integer)MON_10
(integer)MON_11
(integer)MON_12
(integer)AM_STR
(integer)PM_STR
(integer)D_T_FMT
(integer)D_FMT
(integer)T_FMT
(integer)T_FMT_AMPM
(integer)ERA
(integer)ERA_YEAR
(integer)ERA_D_T_FMT
(integer)ERA_D_FMT
(integer)ERA_T_FMT
(integer)ALT_DIGITS
(integer)INT_CURR_SYMBOL
(integer)CURRENCY_SYMBOL
(integer)CRNCYSTR
(integer)MON_DECIMAL_POINT
(integer)MON_THOUSANDS_SEP
(integer)MON_GROUPING
(integer)POSITIVE_SIGN
(integer)NEGATIVE_SIGN
(integer)INT_FRAC_DIGITS
(integer)FRAC_DIGITS
(integer)P_CS_PRECEDES
(integer)P_SEP_BY_SPACE
(integer)N_CS_PRECEDES
(integer)N_SEP_BY_SPACE
(integer)P_SIGN_POSN
(integer)N_SIGN_POSN
(integer)DECIMAL_POINT
(integer)RADIXCHAR
(integer)THOUSANDS_SEP
(integer)THOUSEP
(integer)GROUPING
(integer)YESEXPR
(integer)NOEXPR
(integer)YESSTR
(integer)NOSTR
(integer)CODESET
(integer)LOG_EMERG
(integer)LOG_ALERT
(integer)LOG_CRIT
(integer)LOG_ERR
(integer)LOG_WARNING
(integer)LOG_NOTICE
(integer)LOG_INFO
(integer)LOG_DEBUG
(integer)LOG_KERN
(integer)LOG_USER
(integer)LOG_MAIL
(integer)LOG_DAEMON
(integer)LOG_AUTH
(integer)LOG_SYSLOG
(integer)LOG_LPR
(integer)LOG_NEWS
(integer)LOG_UUCP
(integer)LOG_CRON
(integer)LOG_AUTHPRIV
(integer)LOG_LOCAL0
(integer)LOG_LOCAL1
(integer)LOG_LOCAL2
(integer)LOG_LOCAL3
(integer)LOG_LOCAL4
(integer)LOG_LOCAL5
(integer)LOG_LOCAL6
(integer)LOG_LOCAL7
(integer)LOG_PID
(integer)LOG_CONS
(integer)LOG_ODELAY
(integer)LOG_NDELAY
(integer)LOG_NOWAIT
(integer)LOG_PERROR
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