php - 选择查询中的数组

Question

我有以下内容:

<?php

    $array = join(',', $ids); // this prints 3,4,6,7,8

    $stmt = $cxn->prepare('SELECT * FROM comments WHERE id IN (?)');
    $stmt->bind_param('i', $array);
    $stmt->execute();

?>

但是，当我让它打印结果时，它只显示来自第一个 id (3) 的评论，而不显示其他的评论。怎么了？

Answer 1

$arrayCount = count($ids);
$binders = array_fill(0, $arrayCount, '?');

// Create an array of references to the values we want to bind
$bindValues = array(); 
foreach($ids as $key => $id) 
    $bindValues[$keys] = &$ids[$key]; 

// Build SQL statement with the necessary number of bind placeholders
$stmt = $cxn->prepare(
    'SELECT * FROM comments WHERE id IN (' . implode(',', $binders) . ')'
);
// Bind each value (has to be done by reference)
call_user_func_array(array($stmt, "bind_param"), $bindValues));
$stmt->execute();