>?php //服务端ajaxserver.php function _getmicrotime() { list($usec, $sec) = explode(" ",microtime()); return ((float)$usec + (float)$sec); } function _exit($msg) { echo("$msg/n"); exit(); } $mode = $_GET["mode"]; $f = fopen("$mode.log", "a+"); if(!$f) _exit(); $begin = _getmicrotime(); $str = "$begin/t". $_GET["flag"] . "/t begin /n"; fwrite($f, "$str"); fclose($f); echo($str); sleep(2); $f = fopen("$mode.log", "a+"); if(!$f) _exit(); $end = _getmicrotime(); $str = "$end/t". $_GET["flag"] . "/t end /n"; fwrite($f, "$str"); fclose($f); echo($str); ?<

>!doctype html public "-//W3C//DTD HTML 4.0 Transitional//EN"< >html< >head< >title< New Document >/title< >script language="JavaScript"< >!-- function $(id) { return document.getElementById(id); } function ajax_object() { var A; try { A=new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { try { A=new ActiveXObject("Microsoft.XMLHTTP"); } catch (oc) { A=null; } } if(!A && typeof XMLHttpRequest != "undefined") A = new XMLHttpRequest(); return A; } function doit(flag) { var uri = "ajaxserver.php?mode=opera&flag=" + flag ; var x = ajax_object(); x.open("GET", uri, true); function callback() { if (x.readyState != 4) return; if (x.status==200) { $("result").value += x.responseText; } } if ("[XMLHttpRequest]"==x.constructor) { x.onload = callback ; } else { x.onreadystatechange = callback ; } x.send(null); } function doajax() { doit(1); doit(2); doit(3); doit(4); doit(5); } //--< >/script< >/head< >body< >input type="button" value="doajax" οnclick="doajax();"< >textarea cols="80" rows="60" id="result"<>/textarea< >/body< >/html<