Question

<?php
$server   = 'mysql:dbname=test;host=localhost';
$user     = 'root';
$password = '';
$pdo      = new PDO($server, $user, $password);
$pdo -> setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING);
$test=0;
$teest=3;
$query = $pdo->prepare('SELECT * FROM imgdb LIMIT :staaart,8');
$query -> execute(array('staaart' => $test, 'eeend' => $teest));
$result=$query->fetchAll();
print_r($result);
?>

这是我的PHP / PDO，我收到此警告：

警告：PDOStatement :: execute（）[pdostatement.execute]：SQLSTATE [HY093]：参数号无效：绑定变量数与第11行中C：\ xampplite \ htdocs \ pdo_db_connection.php中的标记数不匹配

警告：PDOStatement :: execute（）[pdostatement.execute]：SQLSTATE [HY093]：第11行的C：\ xampplite \ htdocs \ pdo_db_connection.php中的参数号无效 Array（）

编辑：现在它对我有用

$server   = 'mysql:dbname=test;host=localhost';
$user     = 'root';
$password = '';
$pdo      = new PDO($server, $user, $password);
$pdo -> setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING);
$test=0;
$teest=2;
$teeest='Bochum';
$query = $pdo->prepare('SELECT * FROM imgdb WHERE stadt = :stadt LIMIT :staaart,:eeend');
$query->bindParam(':stadt', $teeest, PDO::PARAM_STR);
$query->bindParam(':staaart', $test, PDO::PARAM_INT);
$query->bindParam(':eeend', $teest, PDO::PARAM_INT);
$query -> execute();
$result=$query->fetchAll();
print_r($result);

Answer 1

您准备好的查询中只有一个参数，但正在尝试绑定两个参数：

$query = $pdo->prepare('SELECT * FROM imgdb LIMIT :staaart,8');
$query -> execute(array('staaart' => $test, 'eeend' => $teest));

准备staaart和eeend：

$query = $pdo->prepare('SELECT * FROM imgdb LIMIT :staaart,:eeend');
$query -> execute(array('staaart' => $test, 'eeend' => $teest));

或仅使用staaart：

执行

$query = $pdo->prepare('SELECT * FROM imgdb LIMIT :staaart,8');
$query -> execute(array('staaart' => $test));

PDO SQLSTATE [HY093]

1 个答案: