If PHP were to provide the MySQL client library under GPL, the GPL would have to hold for the entire PHP project.
![]() Mysql Enterprise Cost License Available InFor commercial applications of MySQL there is a second, commercial license available in addition to GPL.
It is indeed true that GPL software can be used without payment of fees, provided that one adheres to certain conditions. Furthermore, you can appeal to the developers group for help. If you wish to use a GPL program as the basis for a commercial product, you must again make your own source code freely available, in the sense of GPL, with the changes made. This is seldom something that developers of commercial products wish to do. In general, then, every program that is derived from GPL software exists under the terms of GPL. Mysql Enterprise Cost Full Text OfGPL is, so to speak, transmitted.) Tip: Further information on the open source idea, the full text of GPL, and explanations can be found at the following addresses. It is only when the resulting solution is to be sold to customers that the question of licensing comes into play. Mysql Enterprise Cost Free Use ForThis rule is expressed on the MySQL home page as follows: Free use for those who never copy,modify, or distribute. If you also develop a PHP application and install it with your Internet service provider, you do not have to make your PHP code freely available in the sense of GPL. You are thus prohibited from developing a new database system based on MySQL if you are not prepared to make your extensions freely available to the MySQL community in the sense of GPL. If the limitations of the GPL are not acceptable to you as a commercial developer, then you may sell your product (program) together with a commercial MySQL license. This can prove worthwhile because MySQL remains available to you even if you are unable or unwilling to make your code available in the sense of GPL. The program MySQL Network also contains access to special compiled server versions that are said to be particularly stable, e-mail and telephone support, as well as various other services. Updates to the MySQL server (even for versions 4.0 and 5.0, etc.) are free during the period of the program. Classic licenses are cheaper, on the other hand, once the MySQL server has been installed and should just run. Many MySQL client libraries, such as the JDBC driver ConnectorJ, used to be available in earlier versions under LGPL (lesser Gnu public license), which implies fewer restrictions for commercial applications. It is thus usually unnecessary to obtain licenses for the use of client libraries, because the client libraries are automatically included with the server license. Commercial licensing of the client library actually represents nothing other than a protection of the MySQL companys commercial interests. ![]() The customer then loads the GPL version of the MySQL server from the Internet and believes that all is right with the world. In such a case the MySQL company would receive nothing for the development of a commercial MySQL product. For example, the PHP project is not subordinate to GPL, but to another open source license that is considerably more liberal and contains fewer restrictions for commercial applications.
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