本文实例讲述了PHP+MySQL使用mysql_num_rows实现模糊查询图书信息功能。分享给大家供大家参考,具体如下:
一、代码
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312"><link href="style.css" rel="external nofollow" rel="stylesheet"><title>应用mysql_num_rows()函数获取查询结果集中的记录数</title></head><body><table width="609" height="134" border="1" cellpadding="0" cellspacing="0" bgcolor="#9E7DB4" align="center"><form name="myform" method="post" action=""> <tr> <td width="605" height="51" bgcolor="#CC99FF"><div align="center">请输入图书名称 <input name="txt_book" type="text" id="txt_book" size="25" > <input type="submit" name="Submit" value="查询"> </div></td> </tr></form> <tr valign="top" bgcolor="#FFFFFF"> <td height="81"> <table width="100%" border="0" cellpadding="0" cellspacing="0"> <tr> <td height="79" align="right" valign="top"> <br> <table width="572" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#625D59"> <tr align="center" bgcolor="#CC99FF"> <td width="46" height="20">编号</td> <td width="167">图书名称</td> <td width="90">出版时间</td> <td width="70">图书定价</td> <td width="78">作者</td> <td width="114">出版社</td> </tr> <?php $link=mysql_connect("localhost","root","root") or die("数据库连接失败".mysql_error()); mysql_select_db("db_database13",$link); mysql_query("set names gb2312"); $sql=mysql_query("select * from tb_book"); $info=mysql_fetch_object($sql); if ($_POST[Submit]=="查询"){ $txt_book=$_POST[txt_book]; $sql=mysql_query("select * from tb_book where bookname like '%".trim($txt_book)."%'"); //如果选择的条件为"like",则进行模糊查询 $info=mysql_fetch_object($sql); } if($info==false){ //如果检索的信息不存在,则输出相应的提示信息 echo "<div align='center' style='color:#FF0000; font-size:12px'>对不起,您检索的图书信息不存在!</div>"; } do{ ?> <tr align="left" bgcolor="#FFFFFF"> <td height="20" align="center"><?php echo $info->id; ?></td> <td > <?php echo $info->bookname; ?></td> <td align="center"><?php echo $info->issuDate; ?></td> <td align="center"><?php echo $info->price; ?></td> <td align="center"> <?php echo $info->maker; ?></td> <td> <?php echo $info->publisher; ?></td> </tr> <?php }while($info=mysql_fetch_object($sql)); ?> </table> <br> 找到相关记录 <?php $nums=mysql_num_rows($sql);echo $nums;?> 条 </td> </tr> </table> <br></td> </tr></table></body></html>
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