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phpci數(shù)據(jù)庫函數(shù),php處理數(shù)據(jù)庫的常用函數(shù)

PHP CI框架修改數(shù)據(jù)的方法

CI框架下的PHP增刪改查總結(jié):

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controllers下的 cquery.php文件

[php] view plain copy

?php

class CQuery extends Controller {

//構(gòu)造函數(shù)

function CQuery() {

parent::Controller();

// $this-load-database();

}

function index() {

//調(diào)用model 其中train為外層文件夾 MQuery為model名稱 queryList為重命名

$this-load-model('train/MQuery','queryList');

//獲得返回的結(jié)果集 這里確定調(diào)用model中的哪個(gè)方法

$result = $this-queryList-queryList();

//將結(jié)果集賦給res

$this-smarty-assign('res',$result);

//跳轉(zhuǎn)到顯示頁面

$this-smarty-view('train/vquery.tpl');

}

//進(jìn)入新增頁面

function addPage() {

$this-smarty-view('train/addPage.tpl');

}

//新增

function add() {

//獲得前臺(tái)數(shù)據(jù)

//用戶名

$memberName = $this-input-post('memberName');

//密碼

$password = $this-input-post('password');

//真實(shí)姓名

$userRealName = $this-input-post('userRealName');

//性別

$sex = $this-input-post('sex');

//出生日期

$bornDay = $this-input-post('bornDay');

//e_mail

$eMail = $this-input-post('eMail');

//密碼問題

$question = $this-input-post('question');

//密碼答案

$answer = $this-input-post('answer');

//調(diào)用model

$this-load-model('train/MQuery','addRecord');

//向model中的addRecord傳值

$result = $this-addRecord-addRecord($memberName,$password,$userRealName,$sex,$bornDay,$eMail,$question,$answer);

//判斷返回的結(jié)果,如果返回true,則調(diào)用本頁的index方法,不要寫 $result == false 因?yàn)榉祷氐闹滴幢厥莊alse 也有可能是""

if ($result) {

$this-index();

} else {

echo "add failed.";

}

}

//刪除

function deletePage() {

//獲得ID

$deleteID = $this-uri-segment(4);

//調(diào)用model

$this-load-model('train/MQuery','delRecord');

//將值傳入到model的delRecord方法中

$result = $this-delRecord-delRecord($deleteID);

//判斷返回值

if ($result) {

$this-index();

} else {

echo "delect failed.";

}

}

//修改先查詢

function changePage() {

$changeID = $this-uri-segment(4);

$this-load-model('train/MQuery','changeRecord');

$result = $this-changeRecord-changeRecord($changeID);

//將結(jié)果集賦給res

$this-smarty-assign('res',$result);

//跳轉(zhuǎn)到顯示頁面

$this-smarty-view('train/changePage.tpl');

}

//修改

function change() {

//獲得前臺(tái)數(shù)據(jù)

//ID

$ID = $this-input-post('id');

//用戶名

$memberName = $this-input-post('memberName');

//密碼

$password = $this-input-post('password');

//真實(shí)姓名

$userRealName = $this-input-post('userRealName');

//性別

$sex = $this-input-post('sex');

//出生日期

$bornDay = $this-input-post('bornDay');

//e_mail

$eMail = $this-input-post('eMail');

//密碼問題

$question = $this-input-post('question');

//密碼答案

$answer = $this-input-post('answer');

//調(diào)用model

$this-load-model('train/MQuery','change');

//向model中的change傳值

$result = $this-change-change($ID,$memberName,$password,$userRealName,$sex,$bornDay,$eMail,$question,$answer);

//判斷返回的結(jié)果,如果返回true,則調(diào)用本頁的index方法,不要寫 $result == false 因?yàn)榉祷氐闹滴幢厥莊alse 也有可能是""

if ($result) {

$this-index();

} else {

echo "change failed.";

}

}

}

models中的 mquery.php 文件

[php] view plain copy

?php

class MQuery extends Model {

//構(gòu)造函數(shù)

function MQuery() {

parent::Model();

//連接數(shù)據(jù)庫

$this-load-database();

}

//查詢列表

function queryList() {

//防止select出的數(shù)據(jù)存在亂碼問題

//mysql_query("SET NAMES GBK");

//SQL語句

$sql = "SELECT ID,member_name,sex,e_mail FROM user_info_t";

//執(zhí)行SQL

$rs = $this-db-query($sql);

//將查詢結(jié)果放入到結(jié)果集中

$result = $rs-result();

//關(guān)閉數(shù)據(jù)庫

$this-db-close();

//將結(jié)果集返回

return $result;

}

//新增

function addRecord($memberName,$password,$userRealName,$sex,$bornDay,$eMail,$question,$answer) {

//防止select出的數(shù)據(jù)存在亂碼問題

//mysql_query("SET NAMES GBK");

//SQL語句

$sql = "INSERT INTO user_info_t (member_name,password,user_real_name,sex,born_day,e_mail,question,answer) " .

"VALUES ('$memberName','$password','$userRealName','$sex','$bornDay','$eMail','$question','$answer')";

//執(zhí)行SQL

$result = $this-db-query($sql);

//關(guān)閉數(shù)據(jù)庫

$this-db-close();

//返回值

return $result;

}

//刪除

function delRecord($deleteID) {

//防止select出的數(shù)據(jù)存在亂碼問題

//mysql_query("SET NAMES GBK");

$sql = "DELETE FROM user_info_t WHERE ID = $deleteID";

$result = $this-db-query($sql);

$this-db-close();

return $result;

}

//修改前查詢

function changeRecord($changeID) {

//防止select出的數(shù)據(jù)存在亂碼問題

//mysql_query("SET NAMES GBK");

$sql = "SELECT ID,member_name,password,user_real_name,sex,born_day,e_mail,question,answer FROM user_info_t WHERE ID = $changeID";

//執(zhí)行SQL

$rs = $this-db-query($sql);

$result = $rs-row();//$result = $rs[0]

//關(guān)閉數(shù)據(jù)庫

$this-db-close();

//將結(jié)果集返回

return $result;

}

//修改

function change($ID,$memberName,$password,$userRealName,$sex,$bornDay,$eMail,$question,$answer) {

//防止select出的數(shù)據(jù)存在亂碼問題

//mysql_query("SET NAMES GBK");

//SQL語句

$sql = "update user_info_t set member_name = '$memberName',password = '$password', user_real_name = '$userRealName'," .

"sex = '$sex',born_day = '$bornDay',e_mail = '$eMail',question = '$question',answer = '$answer'" .

"where ID = $ID";

//執(zhí)行SQL

$result = $this-db-query($sql);

//關(guān)閉數(shù)據(jù)庫

$this-db-close();

//返回值

return $result;

}

}

views 下的 addPage.tpl文件

[php] view plain copy

html

head

/head

bodyform action="{{site_url url='train/cquery/add'}}" method="post"

table border='1'

tr

td用戶名/td

tdinput type="text" class="text" name="memberName" id="memberName"http://td

/tr

tr

td密碼/td

tdinput type="text" class="text" name="password" id="password"http://td

/tr

tr

td真實(shí)姓名/td

tdinput type="text" class="text" name="userRealName" id="userRealName"http://td

/tr

tr

td性別/td

tdinput type="text" class="text" name="sex" id="sex"http://td

/tr

tr

td出生日期/td

tdinput type="text" class="text" name="bornDay" id="bornDay"http://td

/tr

tr

tde_mail/td

tdinput type="text" class="text" name="eMail" id="eMail"http://td

/tr

tr

td密碼問題/td

tdinput type="text" class="text" name="question" id="question"http://td

/tr

tr

td密碼答案/td

tdinput type="text" class="text" name="answer" id="answer"http://td

/tr

/table

table

tr

tdinput type="submit" class="button" name="OK" value="提交" /

/td

/tr

/table/form

/body

/html

php ci 數(shù)據(jù)庫調(diào)用判斷問題.

你在查詢數(shù)據(jù)庫時(shí)沒有給$this-db-where('uname',$id);這里的ID值,所以會(huì)報(bào)錯(cuò),至于輸出的注冊成功是因?yàn)閕f ($user[0]-uid =='')是成立的所以會(huì)有輸出,把$id值是否為空做下判斷,如果為空則不查詢。

function user_select($id)

{

if($id=='') return false;

$this-db-where('uname',$id);

$this-db-select('*');

$query=$this-db-get('user');

return $query-result();

}

如何正確理解PHP獲取顯示數(shù)據(jù)庫數(shù)據(jù)函數(shù)

1、PHP獲取顯示數(shù)據(jù)庫數(shù)據(jù)函數(shù)之 mysql_result()

mixed mysql_result(resource result_set, int row [,mixed field])

從result_set 的指定row 中獲取一個(gè)field 的數(shù)據(jù). 簡單但是效率低.

舉例:

$link1 = @mysql_connect("server1",

"webuser", "password")

or die("Could not connect

to mysql server!");

@mysql_select_db("company")

or die("Could not select database!");

$query = "select id, name

from product order by name";

$result = mysql_query($query);

$id = mysql_result($result, 0, "id");

$name = mysql_result($result, 0, "name");

mysql_close();

注意,上述代碼只是輸出結(jié)果集中的第一條數(shù)據(jù)的字段值,如果要輸出所有記錄,需要循環(huán)處理.

for ($i = 0; $i = mysql_num_rows($result); $i++)

{

$id = mysql_result($result, 0, "id");

$name = mysql_result($result, 0, "name");

echo "Product: $name ($id)";

}

注意,如果查詢字段名是別名,則mysql_result中就使用別名.

2、PHP獲取顯示數(shù)據(jù)庫數(shù)據(jù)函數(shù)之mysql_fetch_row()

array mysql_fetch_row(resource result_set)

從result_set中獲取整行,把數(shù)據(jù)放入數(shù)組中.

舉例(注意和list 的巧妙配合):

$query = "select id,

name from product order by name";

$result = mysql_query($query);

while(list($id, $name)

= mysql_fetch_row($result)) {

echo "Product: $name ($id)";

}

3、PHP獲取顯示數(shù)據(jù)庫數(shù)據(jù)函數(shù)之mysql_fetch_array()

array mysql_fetch_array(resource result_set [,int result_type])

mysql_fetch_row()的增強(qiáng)版.

將result_set的每一行獲取為一個(gè)關(guān)聯(lián)數(shù)組或/和數(shù)值索引數(shù)組.

默認(rèn)獲取兩種數(shù)組,result_type可以設(shè)置:

MYSQL_ASSOC:返回關(guān)聯(lián)數(shù)組,字段名=字段值

MYSQL_NUM:返回?cái)?shù)值索引數(shù)組.

MYSQL_BOTH:獲取兩種數(shù)組.因此每個(gè)字段可以按索引偏移引用,也可以按字段名引用.

舉例:

$query = "select id,

name from product order by name";

$result = mysql_query($query);

while($row = mysql_fetch_array

($result, MYSQL_BOTH)) {

$name = $row['name'];

//或者 $name = $row[1];

$name = $row['id'];

//或者 $name = $row[0];

echo "Product: $name ($id)";

}

4、PHP獲取顯示數(shù)據(jù)庫數(shù)據(jù)函數(shù)之mysql_fetch_assoc()

array mysql_fetch_assoc(resource result_set)

相當(dāng)于 mysql_fetch_array($result, MYSQL_ASSOC)

5、PHP獲取顯示數(shù)據(jù)庫數(shù)據(jù)函數(shù)之mysql_fetch_object()

object mysql_fetch_object(resource result_set)

和mysql_fetch_array()功能一樣,不過返回的不是數(shù)組,而是一個(gè)對象.

舉例:

$query = "select id, name

from product order by name";

$result = mysql_query($query);

while($row = mysql_fetch_object

($result)) {

$name = $row-name;

$name = $row-id;

echo "Product: $name ($id)";

}

以上這些函數(shù)就是PHP獲取顯示數(shù)據(jù)庫數(shù)據(jù)函數(shù)的全部總結(jié)。


分享題目:phpci數(shù)據(jù)庫函數(shù),php處理數(shù)據(jù)庫的常用函數(shù)
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