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下列常量由此扩展定义,且仅在此扩展编译入 PHP 或在运行时动态载入时可用。
DBX_MYSQL
( integer )
DBX_ODBC
( integer )
DBX_PGSQL
( integer )
DBX_MSSQL
( integer )
DBX_FBSQL
( integer )
DBX_OCI8
( integer ) (available from PHP 4.3.0)
DBX_SYBASECT
( integer )
DBX_SQLITE
( integer ) (PHP 5)
DBX_PERSISTENT
( integer )
DBX_RESULT_INFO
( integer )
DBX_RESULT_INDEX
( integer )
DBX_RESULT_ASSOC
( integer )
DBX_RESULT_UNBUFFERED
( integer ) (PHP 5)
DBX_COLNAMES_UNCHANGED
( integer ) (available from PHP 4.3.0)
DBX_COLNAMES_UPPERCASE
( integer ) (available from PHP 4.3.0)
DBX_COLNAMES_LOWERCASE
( integer ) (available from PHP 4.3.0)
DBX_CMP_NATIVE
( integer )
DBX_CMP_TEXT
( integer )
DBX_CMP_NUMBER
( integer )
DBX_CMP_ASC
( integer )
DBX_CMP_DESC
( integer )