These constants are defined by the PHP core. This includes PHP,
the Zend engine, and SAPI modules.
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PHP_VERSION
(string)
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PHP_OS
(string)
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DEFAULT_INCLUDE_PATH
(string)
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PEAR_INSTALL_DIR
(string)
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PEAR_EXTENSION_DIR
(string)
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PHP_EXTENSION_DIR
(string)
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PHP_BINDIR
(string)
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PHP_LIBDIR
(string)
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PHP_DATADIR
(string)
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PHP_SYSCONFDIR
(string)
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PHP_LOCALSTATEDIR
(string)
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PHP_CONFIG_FILE_PATH
(string)
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PHP_OUTPUT_HANDLER_START
(string)
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PHP_OUTPUT_HANDLER_CONT
(integer)
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PHP_OUTPUT_HANDLER_END
(integer)
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E_ERROR
(integer)
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E_WARNING
(integer)
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E_PARSE
(integer)
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E_NOTICE
(integer)
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E_CORE_ERROR
(integer)
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E_CORE_WARNING
(integer)
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E_COMPILE_ERROR
(integer)
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E_COMPILE_WARNING
(integer)
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E_USER_ERROR
(integer)
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E_USER_WARNING
(integer)
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E_USER_NOTICE
(integer)
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E_ALL
(integer)
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