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<?php
class Pipe
{
public $fifoPath;
private $w_pipe;
private $r_pipe;
/**
* 自动创建一个管道
*
* @param string $name 管道名字
* @param int $mode 管道的权限，默认任何用户组可以读写
*/
function __construct($name = 'pipe', $mode = 0666)
{
$fifoPath = "/tmp/$name." . posix_getpid();
if (!file_exists($fifoPath)) {
if (!posix_mkfifo($fifoPath, $mode)) {
error("create new pipe ($name) error.");
return false;
}
} else {
error( "pipe ($name) has exit.");
return false;
}
$this->fifoPath = $fifoPath;
}
///////////////////////////////////////////////////
// 写管道函数开始
///////////////////////////////////////////////////
function open_write()
{
$this->w_pipe = fopen($this->fifoPath, 'w');
if ($this->w_pipe == NULL) {
error("open pipe {$this->fifoPath} for write error.");
return false;
}
return true;
}
function write($data)
{
return fwrite($this->w_pipe, $data);
}
function write_all($data)
{
$w_pipe = fopen($this->fifoPath, 'w');
fwrite($w_pipe, $data);
fclose($w_pipe);
}
function close_write()
{
return fclose($this->w_pipe);
}
/////////////////////////////////////////////////////////
/// 读管道相关函数开始
////////////////////////////////////////////////////////
function open_read()
{
$this->r_pipe = fopen($this->fifoPath, 'r');
if ($this->r_pipe == NULL) {
error("open pipe {$this->fifoPath} for read error.");
return false;
}
return true;
}
function read($byte = 1024)
{
return fread($this->r_pipe, $byte);
}
function read_all()
{
$r_pipe = fopen($this->fifoPath, 'r');
$data = '';
while (!feof($r_pipe)) {
//echo "read one Kn";
$data .= fread($r_pipe, 1024);
}
fclose($r_pipe);
return $data;
}
function close_read()
{
return fclose($this->r_pipe);
}
/**
* 删除管道
*
* @return boolean is success
*/
function rm_pipe()
{
return unlink($this->fifoPath);
}
}
?>
/*
有了这个类，就可以实现简单的管道通信了。*/
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