array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'function.eio-nop.php', 1 => 'eio_nop', 2 => 'Does nothing, except go through the whole request cycle', ), 'up' => array ( 0 => 'ref.eio.php', 1 => 'Eio 函数', ), 'prev' => array ( 0 => 'function.eio-mknod.php', 1 => 'eio_mknod', ), 'next' => array ( 0 => 'function.eio-npending.php', 1 => 'eio_npending', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/eio/functions/eio-nop.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

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, 或者在失败时返回 false.

参见