$db = new PDO($db_config['dsn'],$db_config['username'],$db_config['password']);//建立连接
$db->exec('SET NAMES '.C('DB_CHARSET'));
$sql = "select * from tab limit 1";
$sth = $db->prepare($sql);
$sth->execute();
$result = $sth->fetch();
print_r($result);//此处数据可以查询出来
$sql = "select * from tab limit 2";
$sth = $db->prepare($sql);
$sth->execute();//程序执行到此处就会报错
$sth->fetchAll();
dump($result);
报错信息:Fatal error: Call to a member function execute() on a non-object in
$db->exec('SET NAMES '.C('DB_CHARSET'));
$sql = "select * from tab limit 1";
$sth = $db->prepare($sql);
$sth->execute();
$result = $sth->fetch();
print_r($result);//此处数据可以查询出来
$sql = "select * from tab limit 2";
$sth = $db->prepare($sql);
$sth->execute();//程序执行到此处就会报错
$sth->fetchAll();
dump($result);
报错信息:Fatal error: Call to a member function execute() on a non-object in
http://www.111cn.net/phper/21/pdo_php.htm
<?php
/* Execute a prepared statement by passing an array of values */
$sql = 'SELECT name, colour, calories
FROM fruit
WHERE calories < :calories AND colour = :colour';
$sth = $dbh->prepare($sql, array(PDO::ATTR_CURSOR => PDO::CURSOR_FWDONLY));
$sth->execute(array(':calories' => 150, ':colour' => 'red'));
$red = $sth->fetchAll();
$sth->execute(array('calories' => 175, 'colour' => 'yellow'));
$yellow = $sth->fetchAll();
?>