1.查詢:php
數據的顯示,這裏就能夠嵌入php來進行數據的輸出html
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<!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>無標題文檔</title>
</head>
<body>
<table width=
"100%"
border=
"1"
cellpadding=
"0"
cellspacing=
"0"
>
<tr>
<td>代號</td>
<td>名稱</td>
<td>性別</td>
<td>生日</td>
<td>班級</td>
<td>操做</td>
</tr>
<?php
$db
=
new
MySQLi(
"localhost"
,
"root"
,
"12345678"
,
"heiheihei"
);
//鏈接數據庫
$sql
=
"select * from student "
;
//寫sql語句
$r
=
$db
->query(
$sql
);
//執行sql語句返回給r
if
(
$r
)
//條件
{
while
(
$attr
=
$r
->fetch_row())
{
$ssex
=
""
;
if
(
$attr
[2])
{
$ssex
=
"男"
;
}
else
{
$ssex
=
"女"
;
}
echo
"
<tr>
<td>{
$attr
[0]}</td>
<td>{
$attr
[1]}</td>
<td>{
$ssex
}</td>
<td>{
$attr
[3]}</td>
<td>{
$attr
[4]}</td>
//添加一個單擊事件,防止不當心刪掉
<td><a onclick=\
"return confirm('肯定要刪除嗎???')"
href=
'shanchu.php?sno={$attr[0]}'
>刪除</a>
<a href=
'xiugai.php?sno={$attr[0]}'
>修改</a> </td> </tr>"; } } ?>
</table>
<a href=
"tianjia.php"
rel=
"external nofollow"
>添加頁面</a>
</body>
</html>
|
2.刪除的處理頁面mysql
刪除時是連接到刪除處理頁面的,因此還要寫一個刪除處理頁面:sql
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<?php
$aaa
=
$_GET
[
"sno"
];
//刪除方式使用的get,照舊
$db
=
new
mysqli(
"localhost"
,
"root"
,
"12345678"
,
"heiheihei"
);
//鏈接...
$sql
=
"delete from student WHERE sno='{$aaa}'"
;
//寫sql語句,sno主鍵
if
(
$db
->query(
$sql
))
//執行sql語句
{
header(
"location:text.php"
);
//刪完回去表頁面
}
else
{
echo
"刪除失敗"
;
}
?>
|
來張效果圖:數據庫
3.添加數據:函數
點擊便可進入添加頁面post
添加頁面:fetch
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<body>
<h1>添加</h1>
<form action=
"add.php"
method=
"post"
>
<p>代號:<input type=
"text"
name=
"sno"
/></p>
<p>名字:<input type=
"text"
name=
"sname"
/></p>
<p>性別: <input type=
"radio"
value=
"1"
name=
"sex"
/>男
<input type=
"radio"
value=
"0"
name=
"sex"
/>女</p>
<p>日期:<input type=
"text"
name=
"sbirthday"
/></p>
//建立表時性別是用的1或2來表示的,要是進行修改不知道1或2表明了什麼,因此就要進行處理,處理成用戶可以明白的男和女
<p>班級:
<select name=
"class"
>
<?php
$db
=
new
MYSQLi(
"localhost"
,
"root"
,
"12345678"
,
"heiheihei"
);
//鏈接...
$sql
=
" select * from class "
;
//寫sql...
$r
=
$db
->query(
$sql
);
//執行...返回...
while
(
$arr
=
$r
->fetch_row())
{
echo
"<option value='{$arr[0]}'>{$arr[1]}</option>"
;
//添上之後回表頁面
}
?>
</select>
</p>
<p><input type=
"submit"
value=
"添加"
/></p>
</form>
</body>
|
添加也須要一個處理頁面來判斷添加:ui
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<?php
$sno
=
$_POST
[
"sno"
];
//$_POST 變量用於收集來自 method="post" 的表單中的值。
$sname
=
$_POST
[
"sname"
];
$ssex
=
$_POST
[
"ssex"
];
$sbirthday
=
$_POST
[
"sbirthday"
];
$class
=
$_POST
[
"class"
];
$db
=
new
mysqli(
"localhost"
,
"root"
,
"12345678"
,
"heiheihei"
);
$sql
=
"insert into student VALUES ('{$sno}','{$sname}','{$ssex}','{$sbirthday}','{$class}')"
;
//向數據庫中添加寫的數據
if
(
$db
->query(
$sql
))
{
header(
"location:text.php"
);
//header() 函數向客戶端發送原始的 HTTP 報頭。
}
else
{
echo
"添加失敗"
;
}
?>
|
效果圖:spa
4.修改數據:主鍵不可修改!!
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<html xmlns=
"http://www.w3.org/1999/xhtml"
>
<head>
<meta http-equiv=
"Content-Type"
content=
"text/html; charset=utf-8"
/>
<title>無標題文檔</title>
</head>
<body>
<h1>修改</h1>
<?php
$sno
=
$_GET
{
"sno"
};
$db
=
new
mysqli(
"localhost"
,
"root"
,
"12345678"
,
"heiheihei"
);
$sql
=
"select * from student WHERE sno='{$sno}'"
;
$r
=
$db
->query(
$sql
);
$arr
=
$r
->fetch_row();
?>
<form action=
"update.php"
method=
"post"
>
<p>代號:<input readonly=
"readonly"
type=
"text"
name=
"sno"
value="<?php
echo
$arr
[0];
?>"/></p>
//readonly只可讀
<p>名稱:<input type=
"text"
name=
"sname"
value=
"<?php echo $arr[1]; ?>"
/></p> <p>性別: <input type=
"radio"
name=
"ssex"
value=
"1"
<?php
echo
$arr
[2]?
"checked='checked'"
:
""
; ?>/>男 <!-- 三元運算符,若是性別=ture,默認值就在男上面,不然空--> <input type=
"radio"
name=
"ssex"
value=
"0"
<?php
echo
$arr
[2]?
""
:
"checked='checked'"
; ?>/>女 </p> <p>日期:<input type=
"text"
name=
"sbirthday"
value=
"<?php echo $arr[3]; ?>"
/></p> <p>班級:<select name=
"class"
>
//value取默認值
<?php
$sclass
=
"select * from class"
;
$rclass
=
$db
->query(
$sclass
);
while
(
$attr
=
$rclass
->fetch_row())
//取到的班級信息
{
//判斷將要輸出的班級是否是和該人員的是否相同
if
(
$arr
[4]==
$attr
[0])
//arr是班級名,attr是班級的代號,倆表
{
echo
"<option value = '{$attr[0]}' selected='selected'>{$attr[1]}</option>"
;
}
else
{
echo
"<option value = '{$attr[0]}'>{$attr[1]}</option>"
;
}
}
?>
</select></p>
<p><input type=
"submit"
value=
"修改完畢"
/></p>
</form>
</body>
</html>
|
]
修改的處理頁面:
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<?php
$sno
=
$_POST
[
"sno"
];
$sname
=
$_POST
[
"sname"
];
$ssex
=
$_POST
[
"ssex"
];
$sbirthday
=
$_POST
[
"sbirthday"
];
$class
=
$_POST
[
"class"
];
$db
=
new
mysqli(
"localhost"
,
"root"
,
"12345678"
,
"heiheihei"
);
$sql
= "update student set sname=
'{$sname}'
,
ssex=
'{$ssex}'
,
sbirthday=
'{$sbirthday}'
,
class
=
'{$class}'
WHERE sno=
'{$sno}'
";
//看一下是否是傳遞過來的sno值;
if
(
$db
->query(
$sql
))
{
header(
"location:text.php"
);
}
else
{
echo
"修改失敗"
;
}
?>
|
修改的效果圖: