如何计算行的MySQL中使用PHP PDO数量

Question

这是我的代码：

<?php

function result($conn) {
      global $number;

    $sql = 'SELECT movie_name FROM movie_info LIMIT 3 OFFSET 0';
    foreach ($conn->query($sql) as $row) {
        print " ". $row['movie_name'] . " <br> ";

    }
}
result($conn);
?>

我真的很困惑，怎么算表中的行数和打印？

Answer 1

如果你有一个PDO连接到你的数据库中的PDO对象 - （Let's称之为例如$ CON）你可以准备如下语句

     $stmt = $con->prepare('SELECT movie_name FROM movie_info LIMIT 3 OFFSET 0');

     // Then fire it up
     $stmt->execute();

     // Pick up the result as an array
     $result = $stmt->fetchAll();

     // Now you run through this array in many ways, for example
     for($x=0, $n=count($result); $x < $n; $x++){
         echo $result[$x]['movie_name'];
     } 

计数（$结果）让您的结果号码

Answer 2

我想你可以做到这一点

SELECT count(*) FROM movie_info

上面的代码将返回存储在该表中的数据的计数，

Answer 3

这里是我的建议

$moviescount = $db->query('SELECT COUNT(`movie_name`) FROM `movie_info` LIMIT 3 OFFSET 0')->fetchColumn();

和

echo moviescount; // for example 10034