/*
** Connect to database:
*/
// connect to the database
$con = mysql_connect('localhost','testuser','testpassword')
or die('Could not connect to the server!');
// select a database:
mysql_select_db('testdb')
or die('Could not select a database.');
/*
** Fetch some rows from database:
*/
// read username from URL
$username = $_GET['username'];
// escape bad chars:
$username = mysql_real_escape_string($username);
// build query:
$sql = "SELECT id, timestamp, text FROM logs WHERE username = '$username'";
// execute query:
$result = mysql_query($sql)
or die('A error occured: ' . mysql_error());
// get result count:
$count = mysql_num_rows($result);
print "Showing $count rows:<hr/>";
// fetch results:
while ($row = mysql_fetch_assoc($result)) {
$row_id = $row['id'];
$row_text = $row['text'];
print "#$row_id: $row_text<br/>\n";
}
/*
** Do a insert query:
*/
// create SQL query:
$sql = "INSERT INTO logs (timestamp, text) VALUES (NOW(), 'some text here!')";
// execute query:
$result = mysql_query($sql) or die('A error occured: ' . mysql_error());
// get the new ID of the last insert command
$new_id = mysql_insert_id();
/*
** Do a update query:
*/
// create SQL query:
$sql = "UPDATE logs SET text='New text!' WHERE id='1'";
// execute query:
$result = mysql_query($sql) or die('A error occured: ' . mysql_error());
/*
** Do a delete query:
*/
// create SQL query:
$sql = "DELETE FROM logs WHERE id='1'";
// execute query:
$result = mysql_query($sql) or die('A error occured: ' . mysql_error());
// Have fun!
//该代码片段来自于: http://www.sharejs.com/codes/php/2030
--转自