PHP 简单案例[1]
- 本系列PHP 简单案例通过“问题-代码”的方式介绍各类方法，每篇设置2个PHP综合问题，并给出解决方案。
问题1
存有一个sj3.php文件的简单PHP程序, 功能是对给定的企业数据库db_emp设计一个职工表 tb_employee的操作页面, 如下图所示。要求根据输入的职工号查该职工的基本信息, 点击“修改”按钮可以修改职 工的基本信息。
![PHP 简单案例[1]](https://ctyun-collect-0531.gdoss.xstore.ctyun.cn/files/2023/05/06/c6679073d62f4decaf8803d9bfe59ffa.png?x-oss-process=image/watermark,size_16,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_30,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=/resize,m_fixed,w_1184 "PHP 简单案例[1]")
问题1代码
<html>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<head><title>职工信息查询与更新页面</title>
<style type="text/css">
<!--
.STYLE1 {font-size: 15px; font-family: "幼圆";}
-->
</style>
</head>
<body>
<div align="center"><font face="幼圆" size="5" color="#008000">
<b>职工信息查询与更新</b></font></div><br><br>
<form name="frm1" method="post">
<table width="300" align="center">
<tr><td width="120"><span class="STYLE1">根据职工号查询:</span></td>
<td><input name="ZGH" id="ZGH" type="text" size="10">
<!-- **********found********** -->
<input type="submit" name="select" class="STYLE1" value="查询"></td></tr>
</table>
</form>
<?php
$conn=mysql_connect("localhost","root","") or die("连接失败");
mysql_select_db("db_emp",$conn) or die("连接数据库失败");
mysql_query("SET NAMES 'gb2312'");
$ZGH=@$_POST['ZGH'];
//**********found**********
$sql="select eno, ename, age, salary, dname from tb_employee, tb_dept WHERE tb_employee.deptno=tb_dept.deptno and tb_employee.eno=$ZGH";
$result=mysql_query($sql);
$row=@mysql_fetch_array($result);
if(($ZGH!=NULL)&&(!$row))
echo "<script>alert('该职工信息不存在！')</script>";
?>
<form name="frm2" method="post">
<table bgcolor="#CCCCCC" width="300" border="1" align="center" cellpadding="0" cellspacing="0">
<tr> <td bgcolor="#CCCCCC" width="90"><span class="STYLE1">职工号:</span></td>
<td><input name="GH" type="text" class="STYLE1" value="<?php echo $row['eno']; ?>">
<input name="h_GH" type="hidden" value="<?php echo $row['eno']; ?>"></td></tr>
<tr> <td bgcolor="#CCCCCC" width="90"><span class="STYLE1">姓名:</span></td>
<td><input name="XM" type="text" class="STYLE1"
value="<?php echo $row['ename']; ?>"></td></tr>
<tr><td bgcolor="#CCCCCC"><div class="STYLE1">年龄:</div></td>
<td><input name="NL" type="text" class="STYLE1"
value="<?php echo $row['age']; ?>"></td></tr>
<tr><td bgcolor="#CCCCCC"><span class="STYLE1">工资:</span></td>
<td><input name="GZ" type="text" class="STYLE1"
value="<?php echo $row['salary']; ?>"></td></tr>
<tr><td bgcolor="#CCCCCC"><span class="STYLE1">部门名称:</span></td>
<td><input name="BM" type="text" class="STYLE1"
value="<?php echo $row['dname']; ?>"></td></tr>
<tr><td align="center" colspan="2" bgcolor="#CCCCCC">
<input name="b" type="submit" value="修改" class="STYLE1">
</td></tr>
</table>
</form>
</body>
</html>
<?php
$GH=@$_POST['GH'];
$h_GH=@$_POST['h_GH'];
$XM=@$_POST['XM'];
$NL=@$_POST['NL'];
$GZ=@$_POST['GZ'];
$BM=@$_POST['BM'];
Function test($GH, $XM, $NL, $GZ)
{
if(!$GH){
echo "<script>alert('职工号不能为空!');location.href='https://www.ctyun.cn/portal/link.html?target=sj3.php';</script>";
exit;
}
elseif(!$XM){
echo "<script>alert('姓名不能为空!');location.href='https://www.ctyun.cn/portal/link.html?target=sj3.php';</script>";
exit;
}
elseif(!is_numeric($NL)){
echo "<script>alert('年龄必须为数字!');location.href='https://www.ctyun.cn/portal/link.html?target=sj3.php';</script>";
exit;
}
elseif(!is_numeric($GZ)){
echo "<script>alert('工资必须为数字!');location.href='https://www.ctyun.cn/portal/link.html?target=sj3.php';</script>";
exit;
}
}
//**********found**********
if(@$_POST["b"]=='修改')
{
test($GH, $XM, $NL, $GZ);
//**********found**********
if($GH!=$h_GH)
echo "<script>alert('职工号已变化，无法修改职工信息!');</script>";
else
{
$sql_update="UPDATE tb_employee SET ename='$XM', age='$NL', salary='$GZ' WHERE eno='$GH' ";
$result_update =mysql_query($sql_update);
//**********found**********
if(mysql_affected_rows($conn)!=0)
echo "<script>alert('修改成功!');</script>";
else
echo "<script>alert('职工信息修改失败!');</script>";
}
}
?>问题2
存有一个名为 sj3.php的简单PHP程序文件, 其成功运行后可将数据库db_mall的商品表tb_commodity 中产地为武汉的电㲻箱价格调敕为 3888 。
问题2代码
<?php
$con=mysql_connect("localhost:3306","root","")
or die("数据库服务器连接失败！<br>");
//**********found**********
mysql_select_db("db_mall",$con) or die( "数据库选择失败！<br>");
//**********found**********
mysql_query("set names 'gbk'");
//**********found**********
$sql="update tb_commodity SET price=3888";
//**********found**********
$sql=$sql." where cname='电冰箱' AND origin='武汉'";
//**********found**********
if (mysql_query($sql,$con))
echo "商品价格修改成功！<br>";
else
echo "商品价格修改失败！<br>";
?>
