SQLite3擴展名在PHP 5.3.0+以上都會默認(rèn)啟用您宪∶涣可以在編譯時使用--without-sqlite3來禁用它喂很。
Windows用戶可通過啟用php_sqlite3.dll才能使用此擴展曹步。 php_sqlite3.dll默認(rèn)包含在PHP 5.3.0之后的PHP發(fā)行版中糊饱。
有關(guān)詳細(xì)的安裝說明径荔，請查看PHP教程及其官方網(wǎng)站督禽。
連接到SQLite數(shù)據(jù)庫
以下PHP代碼顯示如何連接到SQLite數(shù)據(jù)庫。 如果數(shù)據(jù)庫不存在总处，那么它將創(chuàng)建一個新的數(shù)據(jù)庫狈惫，最后將返回一個數(shù)據(jù)庫對象。
<?php
class SQLiteDB extends SQLite3
{
function __construct()
{
$this->open('phpdb.db');
}
}
$db = new SQLiteDB();
if(!$db){
echo $db->lastErrorMsg();
} else {
echo "Yes, Opened database successfully\n";
}
?>
現(xiàn)在鹦马，運行上面的程序在當(dāng)前目錄中創(chuàng)建指定數(shù)據(jù)庫：phpdb.db胧谈。可以根據(jù)需要更改路徑荸频。 如果數(shù)據(jù)庫成功創(chuàng)建菱肖，則會提供以下消息：
在執(zhí)行上面語句后，應(yīng)該也會在相同的目錄下自動創(chuàng)建一個名稱為：phpdb.db的數(shù)據(jù)庫文件旭从。如下所示 -
創(chuàng)建表
以下PHP程序?qū)⒂糜谠谏厦鎰?chuàng)建的數(shù)據(jù)庫(phpdb.db)中創(chuàng)建一個表：
<?php
class SQLiteDB extends SQLite3
{
function __construct()
{
$this->open('phpdb.db');
}
}
$db = new SQLiteDB();
if(!$db){
echo $db->lastErrorMsg();
} else {
echo "Yes, Opened database successfully<br/>\n";
}
$sql =<<<EOF
CREATE TABLE company
(ID INT PRIMARY KEY NOT NULL,
NAME TEXT NOT NULL,
AGE INT NOT NULL,
ADDRESS CHAR(50),
SALARY REAL);
EOF;
$ret = $db->exec($sql);
if(!$ret){
echo $db->lastErrorMsg();
} else {
echo "Yes, Table created successfully<br/>\n";
}
$db->close();
當(dāng)執(zhí)行上述程序時稳强，它將在數(shù)據(jù)庫(phpdb.db)中創(chuàng)建一個名稱為：company的表，并顯示以下消息：
插入數(shù)據(jù)操作
以下PHP程序顯示了如何在上述示例中創(chuàng)建的company表中插入數(shù)據(jù)記錄：
<?php
class SQLiteDB extends SQLite3
{
function __construct()
{
$this->open('phpdb.db');
}
}
$db = new SQLiteDB();
if(!$db){
echo $db->lastErrorMsg();
} else {
echo "Yes, Opened database successfully<br/>\n";
}
// 先刪除后創(chuàng)建表
$sql = "DROP table company";
$ret = $db->exec($sql);
// 創(chuàng)建表語句
$sql =<<<EOF
CREATE TABLE if not exists company
(ID INT PRIMARY KEY NOT NULL,
NAME TEXT NOT NULL,
AGE INT NOT NULL,
ADDRESS CHAR(50),
SALARY REAL);
EOF;
$ret = $db->exec($sql);
if(!$ret){
echo $db->lastErrorMsg();
} else {
echo "Yes, Table created successfully<br/>\n";
}
// $db->close();
$sql =<<<EOF
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (1, 'Maxsu', 26, 'Haikou', 20000.00 );
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (2, 'Allen', 25, 'Guangzhou', 15000.00 );
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (3, 'Tenny', 23, 'Shanghai', 20000.00 );
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (4, 'Weiwang', 25, 'Beijing ', 65000.00 );
EOF;
$ret = $db->exec($sql);
if(!$ret){
echo $db->lastErrorMsg();
} else {
echo "Yes, Some Records has Inserted successfully<br/>\n";
}
$db->close();
當(dāng)執(zhí)行上述程序時遇绞，將向company表中插入給定的記錄键袱，并顯示如下：
SELECT操作
以下PHP程序顯示了如何從上述示例中創(chuàng)建的company表中獲取并顯示數(shù)據(jù)記錄：
<?php
class SQLiteDB extends SQLite3
{
function __construct()
{
$this->open('phpdb.db');
}
}
$db = new SQLiteDB();
if(!$db){
echo $db->lastErrorMsg();
} else {
echo "Yes, Opened database successfully<br/>\n";
}
// 先刪除后創(chuàng)建表
$sql = "DROP table company";
$ret = $db->exec($sql);
// 創(chuàng)建表
$sql =<<<EOF
CREATE TABLE if not exists company
(ID INT PRIMARY KEY NOT NULL,
NAME TEXT NOT NULL,
AGE INT NOT NULL,
ADDRESS CHAR(50),
SALARY REAL);
EOF;
$ret = $db->exec($sql);
if(!$ret){
echo $db->lastErrorMsg();
} else {
echo "Yes, Table created successfully<br/>\n";
}
// $db->close();
$sql =<<<EOF
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (1, 'Maxsu', 26, 'Haikou', 20000.00 );
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (2, 'Allen', 25, 'Guangzhou', 15000.00 );
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (3, 'Tenny', 23, 'Shanghai', 20000.00 );
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (4, 'Weiwang', 25, 'Beijing ', 65000.00 );
EOF;
$ret = $db->exec($sql);
if(!$ret){
echo $db->lastErrorMsg();
} else {
echo "Yes, Some Records has Inserted successfully<br/>\n";
}
// 查詢表中的數(shù)據(jù)
echo "<b> Select Data from company table :</b><hr/>";
$sql =<<<EOF
SELECT * from COMPANY;
EOF;
$ret = $db->query($sql);
while($row = $ret->fetchArray(SQLITE3_ASSOC) ){
echo "ID = ". $row['ID'] . "<br/>\n";
echo "NAME = ". $row['NAME'] ."<br/>\n";
echo "ADDRESS = ". $row['ADDRESS'] ."<br/>\n";
echo "SALARY = ".$row['SALARY'] ."<br/>\n\n";
echo '----------------------------------<br/>';
}
echo "Operation done successfully\n";
$db->close();
執(zhí)行上述程序時摹闽，會產(chǎn)生以下結(jié)果：
更新操作
以下PHP代碼顯示了如何使用UPDATE語句來更新記錄，然后從company表中獲取并顯示更新的記錄：
<?php
class SQLiteDB extends SQLite3
{
function __construct()
{
$this->open('phpdb.db');
}
}
$db = new SQLiteDB();
if(!$db){
echo $db->lastErrorMsg();
} else {
echo "Yes, Opened database successfully<br/>\n";
}
// 先刪除后創(chuàng)建表
$sql = "DROP table company";
$ret = $db->exec($sql);
// 創(chuàng)建表
$sql =<<<EOF
CREATE TABLE if not exists company
(ID INT PRIMARY KEY NOT NULL,
NAME TEXT NOT NULL,
AGE INT NOT NULL,
ADDRESS CHAR(50),
SALARY REAL);
EOF;
$ret = $db->exec($sql);
if(!$ret){
echo $db->lastErrorMsg();
} else {
echo "Yes, Table created successfully<br/>\n";
}
// $db->close();
$sql =<<<EOF
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (1, 'Maxsu', 26, 'Haikou', 20000.00 );
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (2, 'Allen', 25, 'Guangzhou', 15000.00 );
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (3, 'Tenny', 23, 'Shanghai', 20000.00 );
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (4, 'Weiwang', 25, 'Beijing ', 65000.00 );
EOF;
$ret = $db->exec($sql);
if(!$ret){
echo $db->lastErrorMsg();
} else {
echo "Yes, Some Records has Inserted successfully<br/>\n";
}
// 更新ID=1的薪水為：29999
$sql = 'UPDATE COMPANY set SALARY = 29999.00 where ID=1';
$ret = $db->exec($sql);
if(!$ret){
echo $db->lastErrorMsg();
} else {
echo $db->changes(), " Record(ID=1) updated successfully<br/>\n";
}
// 查詢表中的數(shù)據(jù)
echo "<b> Select Data from company table :</b><hr/>";
$sql =<<<EOF
SELECT * from COMPANY;
EOF;
$ret = $db->query($sql);
while($row = $ret->fetchArray(SQLITE3_ASSOC) ){
echo "ID = ". $row['ID'] . "<br/>\n";
echo "NAME = ". $row['NAME'] ."<br/>\n";
echo "ADDRESS = ". $row['ADDRESS'] ."<br/>\n";
echo "SALARY = ".$row['SALARY'] ."<br/>\n\n";
echo '----------------------------------<br/>';
}
echo "Operation done successfully\n";
$db->close();
執(zhí)行上述程序時澜汤，會產(chǎn)生以下結(jié)果：
刪除操作
以下PHP代碼顯示了如何使用DELETE語句刪除任何記錄，然后從company表中獲取并顯示剩余的記錄：
<?php
class SQLiteDB extends SQLite3
{
function __construct()
{
$this->open('phpdb.db');
}
}
$db = new SQLiteDB();
if(!$db){
echo $db->lastErrorMsg();
} else {
echo "Yes, Opened database successfully<br/>\n";
}
// 先刪除后創(chuàng)建表
$sql = "DROP table company";
$ret = $db->exec($sql);
// 創(chuàng)建表
$sql =<<<EOF
CREATE TABLE if not exists company
(ID INT PRIMARY KEY NOT NULL,
NAME TEXT NOT NULL,
AGE INT NOT NULL,
ADDRESS CHAR(50),
SALARY REAL);
EOF;
$ret = $db->exec($sql);
if(!$ret){
echo $db->lastErrorMsg();
} else {
echo "Yes, Table created successfully<br/>\n";
}
// $db->close();
$sql =<<<EOF
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (1, 'Maxsu', 26, 'Haikou', 20000.00 );
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (2, 'Allen', 25, 'Guangzhou', 15000.00 );
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (3, 'Tenny', 23, 'Shanghai', 20000.00 );
INSERT INTO company (ID,NAME,AGE,ADDRESS,SALARY)
VALUES (4, 'Weiwang', 25, 'Beijing ', 65000.00 );
EOF;
$ret = $db->exec($sql);
if(!$ret){
echo $db->lastErrorMsg();
} else {
echo "Yes, Some Records has Inserted successfully<br/>\n";
}
// 更新ID小于等于2的數(shù)據(jù)記錄
$sql =<<<EOF
DELETE from COMPANY where ID<=2;
EOF;
$ret = $db->exec($sql);
if(!$ret){
echo $db->lastErrorMsg();
} else {
echo $db->changes(), " Record(ID<=2) deleted successfully<br/>\n";
}
// 查詢表中的數(shù)據(jù)
echo "<b> Select Data from company table :</b><hr/>";
$sql =<<<EOF
SELECT * from COMPANY;
EOF;
$ret = $db->query($sql);
while($row = $ret->fetchArray(SQLITE3_ASSOC) ){
echo "ID = ". $row['ID'] . "<br/>\n";
echo "NAME = ". $row['NAME'] ."<br/>\n";
echo "ADDRESS = ". $row['ADDRESS'] ."<br/>\n";
echo "SALARY = ".$row['SALARY'] ."<br/>\n\n";
echo '----------------------------------<br/>';
}
echo "Operation done successfully\n";
$db->close();
執(zhí)行上述程序時谁不，會產(chǎn)生以下結(jié)果：
由于其它操作都類似，只需寫上對應(yīng)SQL語句徽诲，然后使用PHP執(zhí)行即可刹帕，所以其它的示例在這里就不再一一演示了。如有疑問谎替，可以留言聯(lián)系偷溺。
