<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> </head> <body> <body> <h1>查询页面</h1> <?php $db = new MySQLi("localhost","root","573533063","test1"); $tj1 = " 1=1 ";//条件变量1 有几个条件做几个条件变量 $tj2 = " 1=1 ";//条件变量2 $name = ""; if(!empty($_POST["name"])) { $name = $_POST["name"]; $tj1 = "name like '%{$name}%'"; } if(!empty($_POST["brand"])) { $brand = $_POST["brand"]; $tj2 = " brand = '{$brand}' "; } ?> <form action="duotiaojianchaxun.php" method="post"> <div>请输入名称 <input type="text" name="name" value="<?php echo $name ?>" /> 请输入系列代号： <input type="text" name="brand" /> <input type="submit" value="查询" /> </div> </form> <table width="100%" border="1" cellpadding="0" cellspacing="0"> <tr> <td>代号</td> <td>名称</td> <td>系列</td> <td>时间</td> <td>油耗</td> <td>功率</td> </tr> <?php $sql = "select * from car where {$tj1} and {$tj2}";//根据{$tj查询} echo $sql; $result = $db->query($sql); $attr = $result->fetch_all(); foreach($attr as $v) { $str = str_replace($name,"<span style='color:red'>{$name}</span>",$v[1]);//标注搜索的关键字 echo "<tr> <td>{$v[0]}</td> <td>{$str}</td> <td>{$v[2]}</td> <td>{$v[3]}</td> <td>{$v[4]}</td> <td>{$v[5]}</td> </tr>"; } ?> </table> </body> </body> </html>
z
<body> <h1>查询页面</h1> <?php $db = new MySQLi("localhost","root","573533063","test1"); $tj = " 1=1 ";//条件默认恒成立 适用范围更广 $name =""; if(!empty($_POST["name"])) { $name = $_POST["name"]; $tj = "name like '%{$name}%'"; } /*$tj = " name like '%{$name}%'";//模糊查询 如果name有值根据值查询 如果为空 则查询所有数据 */ ?> <form action="chaxun.php" method="post"> <div>请输入名称 <input type="text" name="name" /> <input type="submit" value="查询" /> </div> </form> <table width="100%" border="1" cellpadding="0" cellspacing="0"> <tr> <td>代号</td> <td>名称</td> <td>系列</td> <td>时间</td> <td>油耗</td> <td>功率</td> </tr> <?php $sql = "select * from car where {$tj}";//根据{$tj查询} echo $sql; $result = $db->query($sql); $attr = $result->fetch_all(); foreach($attr as $v) { $str = str_replace($name,"<span style='color:red'>{$name}</span>",$v[1]); echo "<tr> <td>{$v[0]}</td> <td>{$str}</td> <td>{$v[2]}</td> <td>{$v[3]}</td> <td>{$v[4]}</td> <td>{$v[5]}</td> </tr>"; } ?> </table> </body>
根据单条件查询 运行结果如下
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> </head> <body> <body> <h1>查询页面</h1> <?php $db = new MySQLi("localhost","root","573533063","test1"); $tj1 = " 1=1 ";//条件变量1 有几个条件做几个条件变量 $tj2 = " 1=1 ";//条件变量2 $name = ""; if(!empty($_POST["name"])) { $name = $_POST["name"]; $tj1 = "name like '%{$name}%'"; } if(!empty($_POST["brand"])) { $brand = $_POST["brand"]; $tj2 = " brand = '{$brand}' "; } ?> <form action="duotiaojianchaxun.php" method="post"> <div>请输入名称 <input type="text" name="name" value="<?php echo $name ?>" /> 请输入系列代号： <input type="text" name="brand" /> <input type="submit" value="查询" /> </div> </form> <table width="100%" border="1" cellpadding="0" cellspacing="0"> <tr> <td>代号</td> <td>名称</td> <td>系列</td> <td>时间</td> <td>油耗</td> <td>功率</td> </tr> <?php $sql = "select * from car where {$tj1} and {$tj2}";//根据{$tj查询} echo $sql; $result = $db->query($sql); $attr = $result->fetch_all(); foreach($attr as $v) { $str = str_replace($name,"<span style='color:red'>{$name}</span>",$v[1]);//标注搜索的关键字 echo "<tr> <td>{$v[0]}</td> <td>{$str}</td> <td>{$v[2]}</td> <td>{$v[3]}</td> <td>{$v[4]}</td> <td>{$v[5]}</td> </tr>"; } ?> </table> </body> </body> </html>
多条件查询