/** "appName" => "patServer", /** /** /** /** /** /** /** /** /** /** /** /** /** /** /** $this->serverInfo["domain"] = $domain; set_time_limit( 0 ); /** /** $this->debug = true; /** // adress may be reused // bind the socket // listen on selected port $this->sendDebugMessage( "Listening on port ".$this->port.". Server started at ".date( "H:i:s", time() ) ); // this allows the shutdown function to check whether the server is already shut down if( method_exists( $this, "onStart" ) ) $this->serverInfo["started"] = time(); while( true ){ // fetch all clients that are awaiting connections // block and wait for data or new connection if( $ready === false ){ // check for new connection // check for maximum amount of connections if( method_exists( $this, "onConnectionRefused" ) ) $this->closeConnection( $newClient ); if( --$ready continue; // check all clients for incoming data
* patServer
* PHP socket server base class
* Events that can be handled:
* * onStart
* * onConnect
* * onConnectionRefused
* * onClose
* * onShutdown
* * onReceiveData
*
* @version 1.1
* @author Stephan Schmidt
* @package patServer
*/
class patServer{
/**
* information about the project
* @var array $systemVars
*/
var $systemVars = array(
"appVersion" => "1.1",
"author" => array("Stephan Schmidt
);
* port to listen
* @var integer $port
*/
var $port = 10000;
* domain to bind to
* @var string $domain
*/
var $domain = "localhost";
* maximum amount of clients
* @var integer $maxClients
*/
var $maxClients = -1;
* buffer size for socket_read
* @var integer $readBufferSize
*/
var $readBufferSize = 128;
* end character for socket_read
* @var integer $readEndCharacter
*/
var $readEndCharacter = "
";
* maximum of backlog in queue
* @var integer $maxQueue
*/
var $maxQueue = 500;
* debug mode
* @var boolean $debug
*/
var $debug = true;
* debug mode
* @var string $debugMode
*/
var $debugMode = "text";
* debug destination (filename or stdout)
* @var string $debugDest
*/
var $debugDest = "stdout";
* empty array, used for socket_select
* @var array $null
*/
var $null = array();
* all file descriptors are stored here
* @var array $clientFD
*/
var $clientFD = array();
* needed to store client information
* @var array $clientInfo
*/
var $clientInfo = array();
* needed to store server information
* @var array $serverInfo
*/
var $serverInfo = array();
* amount of clients
* @var integer $clients
*/
var $clients = 0;
* create a new socket server
*
* @access public
* @param string $domain domain to bind to
* @param integer $port port to listen to
*/
function patServer( $domain = "localhost", $port = 10000 ){
$this->domain = $domain;
$this->port = $port;
$this->serverInfo["port"] = $port;
$this->serverInfo["servername"] = $this->systemVars["appName"];
$this->serverInfo["serverversion"] = $this->systemVars["appVersion"];
}
* set maximum amount of simultaneous connections
*
* @access public
* @param int $maxClients
*/
function setMaxClients( $maxClients ){
$this->maxClients = $maxClients;
}
* set debug mode
*
* @access public
* @param mixed $debug [text|htmlfalse]
* @param string $dest destination of debug message (stdout to output or filename if log should be written)
*/
function setDebugMode( $debug, $dest = "stdout" ){
if( $debug === false ){
$this->debug = false;
return true;
}
$this->debugMode = $debug;
$this->debugDest = $dest;
}
* start the server
*
* @access public
* @param int $maxClients
*/
function start(){
$this->initFD = @socket_create( AF_INET, SOCK_STREAM, 0 );
if( !$this->initFD )
die( "patServer: Could not create socket." );
socket_setopt( $this->initFD, SOL_SOCKET, SO_REUSEADDR, 1 );
if(!@socket_bind( $this->initFD, $this->domain, $this->port ) ){
@socket_close( $this->initFD );
die( "patServer: Could not bind socket to ".$this->domain." on port ".$this->port." ( ".$this->getLastSocketError( $this->initFd )." )." );
}
if(!@socket_listen( $this->initFD, $this->maxQueue ) )
die( "patServer: Could not listen ( ".$this->getLastSocketError( $this->initFd )." )." );
$GLOBALS["_patServerStatus"] = "running";
// this ensures that the server will be sutdown correctly
register_shutdown_function( array( $this, "shutdown" ) );
$this->onStart();
$this->serverInfo["status"] = "running";
$readFDs = array();
array_push( $readFDs, $this->initFD );
for( $i = 0; $i clientFD ); $i++ )
if( isset( $this->clientFD[$i] ) )
array_push( $readFDs, $this->clientFD[$i] );
$ready = @socket_select( $readFDs, $this->null, $this->null, NULL );
$this->sendDebugMessage( "socket_select failed." );
$this->shutdown();
}
if( in_array( $this->initFD, $readFDs ) ){
$newClient = $this->acceptConnection( $this->initFD );
if( $this->maxClients > 0 ){
if( $this->clients > $this->maxClients ){
$this->sendDebugMessage( "Too many connections." );
$this->onConnectionRefused( $newClient );
}
}
}
for( $i = 0; $i clientFD ); $i++ ){

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

查找方法:1、用strpos(),语法“strpos("字符串值","查找子串")+1”;2、用stripos(),语法“strpos("字符串值","查找子串")+1”。因为字符串是从0开始计数的,因此两个函数获取的位置需要进行加1处理。

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。


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