上代码…
两个文件：poll.html poll_vote.php
poll.html：
<html><head><meta charset="utf-8"><title>ajax投票</title><script>function getVote(int) { ?if (window.XMLHttpRequest) { ???// IE7+, Firefox, Chrome, Opera, Safari 执行代码 ???xmlhttp=new XMLHttpRequest(); ?} else { ???// IE6, IE5 执行代码 ???xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); ?} ?xmlhttp.onreadystatechange=function() { ?if (xmlhttp.readyState==4 && xmlhttp.status==200) ???{ ?????document.getElementById("poll").innerHTML=xmlhttp.responseText; ???} ?} ?xmlhttp.open("GET","poll_vote.php?vote="+int,true); ?xmlhttp.send();}</script></head><body><div id="poll"><h3>你喜欢 PHP 和 AJAX 吗?</h3><form>是:<input type="radio" name="vote" value="0" onclick="getVote(this.value)"><br>否:<input type="radio" name="vote" value="1" onclick="getVote(this.value)"></form></div></body></html>
poll_vote.php：
<?php$vote = htmlspecialchars($_REQUEST[‘vote‘]); ??//把预定义的字符转换为 HTML 实体// 获取文件中存储的数据$filename = "poll_result.txt";$content = file($filename);// 将数据分割到数组中$array = explode("||", $content[0]);$yes = $array[0];$no = $array[1];if ($vote == 0){ $yes = $yes + 1;}if ($vote == 1){ $no = $no + 1;}// 插入投票数据$insertvote = $yes."||".$no;$fp = fopen($filename,"w");fputs($fp,$insertvote);fclose($fp);?><h2>结果:</h2><table> <tr> <td>是:</td> <td> <span style="display: inline-block; background-color:green; ????width:<?php echo(100*round($yes/($no+$yes),2)); ?>px; ????height:20px;" ></span> <?php echo(100*round($yes/($no+$yes),2)); ?>% </td> </tr> <tr> <td>否:</td> <td> <span style="display: inline-block; background-color:red; ????width:<?php echo(100*round($no/($no+$yes),2)); ?>px; ????height:20px;"></span> <?php echo(100*round($no/($no+$yes),2)); ?>% </td> </tr></table>
PHP - AJAX投票
原文地址：https://www.cnblogs.com/CBDLL/p/10221222.html