The difference between stream_socket_xxxx and socket_XXX in PHP

After reading the manual, I don’t quite understand the connection between stream_socket_xxxx and socket_xxx

For example: stream_socket_recvfrom and socket_recvfrom are functionally the same except for different parameters

Is it understandable that one is an extension of the other?

For example: stream_socket_client and socket_create both seem to be able to create socket resources, and stream is more powerful

My little brother has nothing to show for it. I just want to ask if I don’t understand.

PS: Suddenly I saw another fsocketopen. Why are there so many socket variants?

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After reading the manual, I don’t quite understand the connection between stream_socket_xxxx and socket_xxx

For example: stream_socket_recvfrom and socket_recvfrom are functionally the same except for different parameters

Is it understandable that one is an extension of the other?

For example: stream_socket_client and socket_create both seem to be able to create socket resources, and stream is more powerful

My little brother has nothing to show for it. I just want to ask if I don’t understand.

PS: Suddenly I saw another fsocketopen. Why are there so many socket variants?

stream_socket_xxxx is an encapsulation of some functions such as sockets
More protocols are supported
http://php.net/manual/zh/wrappers.php

Almost the same content
Post an answer
http://stackoverflow.com/questions/9760548/php-sockets-vs-streams/9783856#9783856
Anyway, it is recommended to use the stream_* function