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PHP & Javascript控制系列：客户端数据存储(三)<br>
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作者/来源：limodou <br>
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PHP & Javascript控制系列：客户端数据存储（三）<br>
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作者：Luis Argerich, Alejandro Mitrou 译者：limodou<br>
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　　Ok, 然后是用于测试目的“form”帧：<br>
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<?php <br>
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session_start(); <br>
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if (!isset($timestamp)) { <br>
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$timestamp=0; <br>
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} <br>
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// 显示表单，使用Javascript来得到最后的时间戳<br>
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if (isset($msg)) { <br>
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$dab=mysql_connect("localhost", "root", "seldon"); <br>
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mysql_select_db("testbase",$dab); <br>
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$query= "insert into testeable(timestamp,message) values(now(),'$msg')"; <br>
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mysql_query($query,$dab); <br>
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// 现在得到在last_time之后的所有聊天对话<br>
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$query= "select * from testeable where timestamp>'$tt'"; <br>
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$result=mysql_query($query,$dab); <br>
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$msgs=array();$i=0;$timestamp=0; <br>
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while($res=mysql_fetch_array($result)) { <br>
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$msgs[]=$res["message"]; <br>
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if($res["timestamp"]>$timestamp) { <br>
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$tt=$res["timestamp"]; <br>
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} <br>
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} <br>
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session_register("timestamp"); <br>
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// 现在我有了最大的时间戳，使用Javascript，我们可以设置这些值        ?> <br>
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<script> <br>
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<?php <br>
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for($i=0;$i<$count($msgs);$i++) { <br>
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?> <br>
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top.lines[top.lines.length]="<?print("$msgs[$i]");?>"; <br>
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<?php <br>
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} <br>
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?> <br>
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top.display.location.reload(); <br>
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<br>
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</script> <br>
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<?php <br>
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} <br>
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?> <br>
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<form name="foo" action=" <?php print("$PHP_SELF"); ?>" method="post"> <br>
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Message:<input type="text" name="msg">   <input type="submit" name="newmsg" value="send"> <br>
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</form>--------------------------------------------------------------------------------<br>
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　　注意，我们根据＂form＂帧来刷新显示，这对用户很好，因为一旦他提交了他的信息就会被马上看见。用户喜欢这样，因为它在聊天室中增加了一些动态机制。你也看到了，form帧与装入帧非常象。 <br>
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　　我们向你展示了一个极为有用的技术，它通过将数据保存在客户端从而减少了c/s间的传输量，并且在客户执行一个复杂的显示操作时减少了从服务器的信息装入。现在你有了能力，去征服世界吧！ <br>
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非常全面的一个php技术网站,php爱好者站 http://www.phpfans.net 有相当丰富的文章和源代码.