PDO Mysql same query but insert to multiple users [duplicate] - mysql

Question

This question already has answers here:
What is the best way to insert multiple rows in PHP PDO MYSQL?
(4 answers)
Closed last year.
I would like through pdo insert multiple (bulk) rows with same value, only diffent is the user_id
I'm passing a array with userIds but i have no idea how to bind them.
<?php
require_once("db.php");
$usersId = $jsonData["usersId"];
$text = $jsonData["text"];
// Try to fetch the user from the database
$query = "INSERT INTO posts (user_id, text) VALUES (:usersId, :text)";
$stmt = $db->prepare($query);
// Bind value
$stmt->bindValue(":userId", $userId);
$stmt->bindValue(":text", $text, PDO::PARAM_STR);
// Execute
$result = $stmt->execute();
?>
My Tables:
CREATE TABLE users(
id INT PRIMARY KEY AUTO_INCREMENT,
name VARCHAR(255)
);
INSERT INTO users (name)
VALUES ("Gregor"),
("Liza"),
("Matt"),
("Bob");
CREATE TABLE posts(
id INT PRIMARY KEY AUTO_INCREMENT,
user_id INT,
text VARCHAR(255)
);

Answer 1

You need a loop:
require_once("db.php");
$text = $jsonData["text"];
// Try to fetch the user from the database
$query = "INSERT INTO posts (user_id, text) VALUES (:usersId, :text)";
$stmt = $db->prepare($query);
// Bind value
$stmt->bindParam(":userId", $userId);
$stmt->bindValue(":text", $text, PDO::PARAM_STR);
// Execute
foreach ($jsonData["usersId"] as $userId) {
$result = $stmt->execute();
}
Use bindParam() so it binds to a reference to the variable. That allows you to reassign the variable each time through the loop without re-binding.