Você procurou por: portability (Coreano - Inglês)

hipaa(health insurance portability and accountability act)
health insurance portability and accountability act

the streams api places no restrictions on the values you use for socktype, but encourages you to consider the portability of values you choose before you release your extension.
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참고: if your system supports fopencookie() (systems using glibc 2 or later), the streams api will always be able to synthesize an ansi file* pointer over any stream. while this is tremendously useful for passing any php stream to any third-party libraries, such behaviour is not portable. you are requested to consider the portability implications before distributing you extension. if the fopencookie synthesis is not desireable, you should query the stream to see if it naturally supports file* by using php_stream_is()
while this is tremendously useful for passing any php stream to any third-party libraries, such behaviour is not portable.