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streamWrapper::stream_cast

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

streamWrapper::stream_cast — Retrieve the underlaying resource

說(shuō)明

public streamWrapper::stream_cast(int $cast_as): resource

This method is called in response to stream_select().

參數

cast_as

Can be STREAM_CAST_FOR_SELECT when stream_select() is calling stream_cast() or STREAM_CAST_AS_STREAM when stream_cast() is called for other uses.

返回值

Should return the underlying stream resource used by the wrapper, or false.

參見(jiàn)

  • stream_select() - Runs the equivalent of the select() system call on the given arrays of streams with a timeout specified by seconds and microseconds

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