eio_nop

(PECL eio >= 0.0.1dev)

eio_nop — Does nothing, except go through the whole request cycle

说明

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

eio_nop() does nothing, except go through the whole request cycle. Could be useful in debugging.

参数

pri

请求的优先级：EIO_PRI_DEFAULT，EIO_PRI_MIN，EIO_PRI_MAX 或 NULL。如果是 NULL，pri 将设为 EIO_PRI_DEFAULT。

callback

callback 函数在请求完成时被调用。其应匹配一下原型：

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

传递给请求的用户数据。

result

针对请求的结果的值。通常是相应的系统调用返回的值。

req

可选的请求资源，可被 eio_get_last_error() 之类的函数使用。

data

Arbitrary variable passed to callback.

返回值

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

参见

  • eio_busy
相关文章
php eio 函数 cancels a requestphp eio 函数 execute custom request like any other eio * callphp eio 函数 allows the caller to directly manipulate the allocated disk space for a filephp eio 函数 change file permissionsphp eio 函数 returns string describing the last error associated with a request resourcephp eio 函数 adds a request to the request groupphp eio 函数 cancels a request groupphp eio 函数 creates a request groupphp eio 函数 create a hardlink for filephp eio 函数 get file statusphp eio 函数 does nothing except go through the whole request cyclephp eio 函数 reads through a whole directoryphp eio 函数 change the name or location of a filephp eio 函数 delete a name and possibly the file it refers tophp imap 函数 gets the last imap error that occurred during this page requestphp nsapi 函数 perform an nsapi sub requestphp postgresql 函数 sends a request to execute a prepared statement with given parameters and waits for the resultphp radius 函数 create accounting or authentication requestphp trader 函数 hilbert transform dominant cycle periodphp trader 函数 hilbert transform dominant cycle phase
关注编程学问公众号