php有專(zhuān)門(mén)的sql server操作函數(shù),舉個(gè)簡(jiǎn)單的例子,是查詢(xún)的
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$serverName?=?"localhost";?//數(shù)據(jù)庫(kù)服務(wù)器地址
$uid?=?"root";?//數(shù)據(jù)庫(kù)用戶(hù)名
$pwd?=?"123456";?//數(shù)據(jù)庫(kù)密碼
$connectionInfo?=?array("UID"=$uid,?"PWD"=$pwd,?"Database"='databasename');
$conn?=?sqlsrv_connect(?$serverName,?$connectionInfo);
if(?$conn?==?false){
echo?"連接數(shù)據(jù)庫(kù)失??!";
die(?print_r(?sqlsrv_errors(),?true));
}
$sql?=?"select?*?from?user";
$query?=?sqlsrv_query(?$conn,?$sql?,?array(),?array(?"Scrollable"?=?SQLSRV_CURSOR_KEYSET?));
$num_rows?=?sqlsrv_num_rows($query);
if($num_rows??0){
while?($row?=?sqlsrv_fetch_array($query)){
echo?$row['aaaa'];
}
}
其它的操作也同理,舉一反三
?php
$con = mysql_connect("localhost:3306","root","");
if (!$con) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db("test", $con);
$result = mysql_query("SELECT * FROM user");
echo "table border='1'
tr
thUsername/th
thPassword/th
/tr";
while($row = mysql_fetch_array($result)) {
echo "tr";
echo "td" . $row['username'] . "/td";
echo "td" . $row['password'] . "/td";
echo "/tr";
}
echo "/table";
mysql_close($con);
?
從服務(wù)器中獲取用戶(hù)所有信息(SQL SELECT語(yǔ)句)并以表格形式出現(xiàn)
?php
$con = mysql_connect("localhost","root","");
if (!$con) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db("test", $con);
mysql_query("DELETE FROM user WHERE username = '$_POST[username]'");
mysql_close($con);
?
刪除該用戶(hù)所有信息delete.php
?php
$con = mysql_connect("localhost:3306","root","");
if (!$con) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db("test", $con);
$sql = "INSERT INTO user (username,password)
VALUES
('$_POST[username]','$_POST[password]')";
if (!mysql_query($sql,$con)) {
die('Error: ' . mysql_error());
}
echo "1 record added";
mysql_close($con);
?
注冊(cè)一個(gè)新用戶(hù)insert.php
?php
$con = mysql_connect("localhost","root","");
if (!$con) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db("test", $con);
mysql_query("UPDATE user SET password = '$_POST[password]' WHERE username = '$_POST[username]'");
mysql_close($con);
?
修改一個(gè)用戶(hù)密碼update.php
html
head
titleFORM/title
/head
body
br /
h1Insert:/h1
form action="insert.php" method="post"
username:input type="name" name="username"/
br /
password:input type="password" name="password"/
input type="submit" value="submit"/
/form
br /hr /br /
h1Delete/h1
form action="delete.php" method="post"
username:input type="name" name="username" /
br /
Are you sure?input type="submit" value="sure" /
/form
br /hr /br /
h1Update/h1
form action="update.php" method="post"
username:input type="name" name="username"/
br /
You want to change your password into:input type="password" name="password"/
input type="submit" value="submit"/
/form
br /hr /br /
/body
/html
以上三個(gè)功能的提交源Operate.html
數(shù)據(jù)庫(kù)的增刪改查,也就是數(shù)據(jù)存儲(chǔ)的操作,應(yīng)該是php最重要的功能。就實(shí)現(xiàn)來(lái)說(shuō)不算是什么復(fù)雜和難搞的技術(shù)。但是俗話(huà)說(shuō)的好,最簡(jiǎn)單的也是最復(fù)雜的。當(dāng)遇到一些復(fù)雜的業(yè)務(wù)邏輯時(shí),這簡(jiǎn)單的增刪改查,也會(huì)變的極其復(fù)雜,甚至變成整個(gè)項(xiàng)目的核心技術(shù)。
其實(shí)說(shuō)到這里,你應(yīng)該就能理解了,PHP,其實(shí)也是所有編程語(yǔ)言中,最復(fù)雜最難搞的,其實(shí)是業(yè)務(wù)邏輯。你要實(shí)現(xiàn)一個(gè)功能,只要是能實(shí)現(xiàn)的,一般網(wǎng)上都有會(huì)一些demo,但是你要處理的業(yè)務(wù)需求,就需要用自己的經(jīng)驗(yàn)來(lái)解決了,甚至有些客戶(hù)連自己真正的需求也不知道,他們只能說(shuō)出他們所想要實(shí)現(xiàn)的功能大概長(zhǎng)什么樣子,功能怎么實(shí)現(xiàn),這可不是查查資料就可以找到的。
class sqlHelper{ \x0d\x0a public $conn; \x0d\x0a public $dbname="數(shù)據(jù)庫(kù)名稱(chēng)"; \x0d\x0a public $username="數(shù)據(jù)庫(kù)用戶(hù)名"; \x0d\x0a public $password="數(shù)據(jù)庫(kù)密碼"; \x0d\x0a public $host="localhost"; \x0d\x0a //連接數(shù)據(jù)庫(kù) \x0d\x0a public function __construct(){ \x0d\x0a $this-conn=mysql_connect($this-host,$this-username,$this-password); \x0d\x0a if(!$this-conn){ \x0d\x0a die("連接失敗".mysql_error()); \x0d\x0a } \x0d\x0a mysql_select_db($this-dbname,$this-conn); \x0d\x0a } \x0d\x0a //執(zhí)行查詢(xún)語(yǔ)句 \x0d\x0a public function execute_dql($sql){ \x0d\x0a $res=mysql_query($sql,$this-conn); \x0d\x0a return $res; \x0d\x0a } \x0d\x0a //執(zhí)行增填改語(yǔ)句 \x0d\x0a public function execute_dml($sql){ \x0d\x0a $b=mysql_query($sql,$this-conn); \x0d\x0a if(!$b){ \x0d\x0a return 3; \x0d\x0a }else{ \x0d\x0a if(mysql_affected_rows($this-conn)){ \x0d\x0a return 1;//表示OK \x0d\x0a }else{ \x0d\x0a return 2;//表示沒(méi)有行收到影響 \x0d\x0a } \x0d\x0a } \x0d\x0a }\x0d\x0a}