PHP tiene una extensión experimental llamada
bcompiler. En el texto del manual de PHP se puede leer:
Cita:
Bcompiler was written for several reasons:
- To encode entire script in a proprietary PHP application
- To encode some classes and/or functions in a proprietary PHP application
- To enable the production of php-gtk applications that could be used on client desktops, without the need for a php.exe.
- To do the feasibility study for a PHP to C converter
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Así que supongo que sí se puede escribir código PHP no libre.
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