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eio_dup2

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(PECL eio >= 0.0.1dev)

eio_dup2 — Duplicate a file descriptor

Description

eio_dup2 ( mixed $fd , mixed $fd2 [, int $pri = EIO_PRI_DEFAULT [, callable $callback = NULL [, mixed $data = NULL ]]] ) : resource

eio_dup2() duplicates file descriptor.

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Parameters

fd

Source stream, Socket resource, or numeric file descriptor

fd2

Target stream, Socket resource, or numeric file descriptor

pri

The request priority: EIO_PRI_DEFAULT, EIO_PRI_MIN, EIO_PRI_MAX, or NULL. If NULL passed, pri internally is set to EIO_PRI_DEFAULT.

callback

callback function is called when the request is done. It should match the following prototype:

void callback(mixed $data, int $result[, resource $req]);
data

is custom data passed to the request.

result

request-specific result value; basically, the value returned by corresponding system call.

req

is optional request resource which can be used with functions like eio_get_last_error()

data

Arbitrary variable passed to callback.

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Return Values

eio_dup2() returns request resource on success or FALSE on error.

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Document created the 30/01/2003, last modified the 26/10/2018
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References

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