CREATE TABLE example (
example_id INT NOT NULL,
name VARCHAR( 50 ) NOT NULL,
value VARCHAR( 50 ) NOT NULL,
other_value VARCHAR( 50 ) NOT NULL
)

INSERT INTO example
(example_id, name, value, other_value)
VALUES
(100, 'Name 1', 'Value 1', 'Other 1');

INSERT INTO example
(example_id, name, value, other_value)
VALUES
(100, 'Name 1', 'Value 1', 'Other 1'),
(101, 'Name 2', 'Value 2', 'Other 2'),
(102, 'Name 3', 'Value 3', 'Other 3'),
(103, 'Name 4', 'Value 4', 'Other 4');

INSERT INTO example
VALUES
(100, 'Name 1', 'Value 1', 'Other 1'),
(101, 'Name 2', 'Value 2', 'Other 2'),
(102, 'Name 3', 'Value 3', 'Other 3'),
(103, 'Name 4', 'Value 4', 'Other 4');

$params = array('value'=>'50');
set_time_limit(0);
echo date("H:i:s");
for($i=0;$i<2000000;$i++){
$connect_mysql->insert($params);
};
echo date("H:i:s");

echo date("H:i:s");

$connect_mysql->query('BEGIN');
$params = array('value'=>'50');
for($i=0;$i<2000000;$i++){ 
$connect_mysql->insert($params);
if($i%100000==0){
$connect_mysql->query('COMMIT');
$connect_mysql->query('BEGIN');
}
}
$connect_mysql->query('COMMIT');
echo date("H:i:s");

$sql= "insert into twenty_million (value) values";
for($i=0;$i<2000000;$i++){
$sql.="('50'),";
};
$sql = substr($sql,0,strlen($sql)-1);
$connect_mysql->query($sql);