<?php
// ====================================
// TRANSACTION MECHANISM
// ====================================
// include the library
include_once 'SPSQLite.class.php';
// set a path for a dabase file
$path = 'C:/AppServ/www/';
// create the object and connect to the database
$sqlite =& new SPSQLite($path . 'test.db');
// create table
$query =<<<QRY
CREATE TABLE test(
id INTEGER PRIMARY KEY,
name VARCHAR(25),
quantity INTEGER,
price NUMERIC(5,2)
);
QRY;
$sqlite->query($query);
// insert data
$queries = array(
"INSERT INTO test (name, quantity, price) VALUES('toro', 10, 500.00);",
"INSERT INTO test (name, quantity, price) VALUES('gallo', 5, 200.00);",
"INSERT INTO test (name, quantity, price) VALUES('rana', 20, 100.00);",
"INSERT INTO test (name, quantity, price) VALUES('cane', 3, 500.00);"
);
foreach($queries as $query){
$sqlite->query($query);
}
// create a query
$query = 'SELECT * FROM test';
$sqlite->query($query);
// return a rowset with num and assoc index
$rows = $sqlite->returnRows();
echo '<pre>';
print_r($rows);
echo '</pre>';
// create a transaction
$sqlite->beginTransaction();
$sqlite->addQuery("UPDATE test SET name='castoro' WHERE id = 1;");
$sqlite->addQuery("UPDATE test SET price=300.00 WHERE id = 2;");
$sqlite->addQuery("INSERT INTO test VALUES(NULL, 'asino', 1, 1000.00);");
$sqlite->commitTransaction();
// verify the transaction modification
$query = 'SELECT name, price FROM test;';
// unbuffered query
$sqlite->query($query, false);
$rows = $sqlite->returnRows('assoc');
echo '<pre>';
print_r($rows);
echo '</pre>';
// create a new transaction
$sqlite->beginTransaction();
// escape string with escapeString()
$sqlite->addQuery("UPDATE test SET name='" . $sqlite->escapeString("alan l'è bel") . "' WHERE id = 1;");
$sqlite->addQuery("UPDATE test SET price=300.00 WHERE id = 2;");
// bad query: id 1 alredy exists -> rollback start
$sqlite->addQuery("INSERT INTO test VALUES(1, 'asino', 1, 1000.00);");
$sqlite->commitTransaction();
// verify the transaction modification (none)
$query = 'SELECT name, price FROM test;';
$sqlite->query($query, false);
$rows = $sqlite->returnRows('assoc');
echo '<pre>';
print_r($rows);
echo '</pre>';
// delete all data
$query = 'DELETE FROM test;';
$sqlite->query($query);
// close SQLite connection
$sqlite->close();
// unset the object
unset($sqlite);
// delete the datadase file
unlink($path . 'test.db');
?>
|
Download
