我有一个这样的 pdo 命令,$sql = $pdoObj->execute($query)
但它不起作用,返回 0 结果。$query
我在调用之前回显了变量execute()
,然后将其粘贴execute()
到代码中,代码运行成功。我无法理解这里的问题是什么,因为我在代码的其他部分中已经这样做了,没有问题。以下是一些查询示例:
SELECT s.id, s.marca, s.colore, s.prezzo, i.id_scarpa, i.taglia FROM scarpe AS s INNER JOIN info_scarpe AS i ON i.id_scarpa = s.id WHERE 1 = 1 AND taglia IN ('40','41','42') AND colore IN ('rosso', 'nero')
SELECT * FROM scarpe WHERE 1=1
SELECT * FROM scarpe WHERE 1=1 AND marca IN ('adidas','nike')
它们都是基于$_GET
变量的动态生成查询。
编辑:当然
if ( isset($_GET) ) {
if ( isset($_GET['taglia']) ) {
$query = "
SELECT
s.id, s.marca, s.colore, s.prezzo, i.id_scarpa, i.taglia
FROM
scarpe AS s
INNER JOIN
info_scarpe AS i
ON i.id_scarpa = s.id
WHERE
1 = 1
";
foreach ( $_GET as $index => $val ) {
$a = explode(',', $val);
$in = "'" . implode("','", $a) . "'";
$query .= ' AND '.$index.' IN ('.$in.')';
}
} else {
$query = " SELECT * FROM scarpe WHERE 1=1";
foreach ( $_GET as $index => $val ) {
$a = explode(',', $val);
$in = "'" . implode("','", $a) . "'";
$query .= ' AND '.$index.' IN ('.$in.')';
}
}
echo 'data loaded';
} else {
$query = " SELECT * FROM scarpe ORDER BY id DESC ";
}
编辑2:
我使用query()
而不是execute()
但仍然无法正常工作