How to Pass an Array of IDs to a SQL WHERE Clause?

Passing an Array to a Query Using a WHERE Clause

You have an array of gallery IDs, $galleries, and you want to create a SQL query that selects rows from a database table based on the values in the array.

To accomplish this, you need to use the IN clause in your WHERE condition. This clause allows you to specify a list of values to compare against a field. Here's how you can modify your query:

SELECT *
FROM galleries
WHERE id IN (1, 2, 5);

By replacing /* values of array $galleries... eg. (1 || 2 || 5) */ with the actual values from your array, you can dynamically generate the IN clause.

There are several ways to do this in PHP:

Method 1: Using implode():

$ids = implode(',', $galleries);
$sql = "SELECT * FROM galleries WHERE id IN ($ids);";

Method 2: Using PDO parameter binding:

$stmt = $pdo->prepare("SELECT * FROM galleries WHERE id IN (:ids);");
$stmt->bindParam(':ids', implode(',', $galleries), PDO::PARAM_STR);
$stmt->execute();

By using these techniques, you can easily create SQL queries that filter data based on values stored in an array.

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