eio_open() opens file specified by path
in access mode mode
with
Path of the file to be opened.
In some SAPIs(e.g. PHP-FPM) it could fail, if you don't specify full path.
One of EIO_O_* constants, or their combinations. EIO_O_* constants have the same meaning, as their corresponding O_* counterparts defined in fnctl.h C header file. Default is EIO_O_RDWR
.
One of EIO_S_I* constants, or their combination (via bitwise OR operator). The constants have the same meaning as their S_I* counterparts defined in » sys/stat.h C header file. Required, if a file is created. Otherwise ignored.
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
function is called when the request is done. It should match the following prototype:
void callback(mixed $data, int $result[, resource $req]);
Arbitrary variable passed to callback
.
eio_open() returns file descriptor in result
argument of callback
on success; otherwise, result
is equal to -1
.
<?php $temp_filename = "eio-temp-file.tmp"; /* Is called when eio_close() finishes */ function my_close_cb($data, $result) { // Zero indicates success var_dump($result == 0); @unlink($data); } /* Is called when eio_open() finishes */ function my_file_opened_callback($data, $result) { // $result should contain the file descriptor var_dump($result > 0); if ($result > 0) { // Close the file eio_close($result, EIO_PRI_DEFAULT, "my_close_cb", $data); eio_event_loop(); } } // Create new file for reading and writing // Deny group and others to do anything with that file eio_open($temp_filename, EIO_O_CREAT | EIO_O_RDWR, EIO_S_IRUSR | EIO_S_IWUSR, EIO_PRI_DEFAULT, "my_file_opened_callback", $temp_filename); eio_event_loop(); ?>
The above example will output something similar to:
bool(true) bool(true)
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