我试图通过php5-fpm 5.4.4-14查询MySQL 5.5.30服务器时失败。下面是我们正在尝试查询:PDO查询不返回结果
mysql> select * from cat where cat = 'sc';
+------+------+--------------------+
| ID | cat | name |
+------+------+--------------------+
| 1 | sc | SOLID CARBIDE BITS |
+------+------+--------------------+
1 row in set (0.00 sec)
这里类似的查询,首先尝试获取类别名称,然后数组指定的一些其他领域。 print_r($result);
和echo $result['name'];
不返回结果。在尝试使用PDO语句查询MySQL数据库时是否有某些我忽略的内容?
<?php
$pdo = new PDO('mysql:host=localhost;dbname=database','username','password');
$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$cat= $_GET["cat"];
/* let try grabbing one of those rows, do not think an array should be here? */
$stmt = $pdo->prepare('SELECT * FROM cat WHERE cat = :cat');
$stmt->bindParam(':cat', $cat);
/* based on the feedback below, we must execute */
$stmt->execute();
$result = $stmt->fetch(PDO::FETCH_ASSOC);
print_r($result);
echo $result['name'];
?>
大,它允许'的print_r($结果);'返回阵列的'的阵列([0] =>数组([ID] => 2 [cat] => scs [name] => SOLID CARBIDE SPIRAL BITS))'',尽管我无法解析echo $ result ['name'];'的单个元素,是否有更好的方法返回这样的查询? – Astron
做fetchOne()代替 –