http://dev.mysql.com/doc/refman/5.1/en/insert-on-duplicate.html看到
自包含例如(使用PDO):
<?php
$pdo = new PDO('mysql:host=localhost;dbname=test', 'localonly', 'localonly');
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
setup($pdo);
$stmt = $pdo->prepare('
INSERT INTO
so_dscrpn
(web,descr,title)
VALUES
(?,?,?)
ON DUPLICATE KEY UPDATE
descr=VALUES(descr),
title=VALUES(title)
');
$data = array(
array('uri1', 'desc1', 'title1'),
array('uri2', 'desc2', 'title2'),
array('uri1', 'desc3', 'title3')
);
foreach($data as $row) {
$stmt->execute($row);
}
foreach($pdo->query('SELECT * FROM so_dscrpn', PDO::FETCH_ASSOC) as $row) {
echo join(', ', $row), "\n";
}
function setup($pdo) {
$pdo->exec('
CREATE TEMPORARY TABLE so_dscrpn (
web varchar(48) NOT NULL,
descr varchar(48),
title varchar(48),
unique key(web)
)
');
}
打印
uri1, desc3, title3
uri2, desc2, title2
考虑使用PDO(http://net.tutsplus.com/tutorials/php /为什么你应该使用phps-pdo-for-database-access /)并且重新格式化/改写你的问题 – Calum