php多个进程写入一个文件与模拟一个队列

来源：互联网发布：苹果软件开发培训班编辑：程序博客网时间：2024/05/16 04:34

function write_file($filename, $content){    $lock = $filename . '.lck';    $write_length = 0;    while(true) {        if( file_exists($lock) ) {            usleep(100);        } else {            touch($lock);            $write_length = file_put_contents($filename, $content, FILE_APPEND);            break;        }    }    if( file_exists($lock) ) {        unlink($lock);    }    return $write_length;}

class DEQueue {    //存储    protected $_storage = array();        //入头    public function unshift($element)    {        return array_unshift($this->_storage, $element);    }        //入尾    public function push($element)    {        return array_push($this->_storage, $element);    }        //出尾    public function pop()    {        return array_pop($this->_storage);    }        //出头    public function shift()    {        return array_shift($this->_storage);    }        //长度    public function length()    {        return count($this->_storage);    }}