How to execute a query multiple time in mysqli Connection using PHP - php

Question

only work when $i=0;
<?php
include 'db.php';
$con = new db();
$db = $con->getConnection();
$i = 0;
while($i <= 10){
$query = "call rep_summary('$date')";
$result = $db->query($query);
while ($data = $result->fetch_assoc()) {
$user = $data['username'];
$id = $data['id'];
echo $user;
}
$i++;
}
$db->close();
?>
the following code work fine but its take too much time and for that I want to reuse connection
<?php
include 'db.php';
$i = 0;
while($i <= 10){
$con = new db();
$db = $con->getConnection();
$query = "call rep_summary('$date')";
$result = $db->query($query);
while ($data = $result->fetch_assoc()) {
$user = $data['username'];
$id = $data['id'];
echo $user;
}
$i++;
}
$db->close();
?>
and db class
<?php
class db {
var $_host = "localhost";
var $_user = "root";
var $_password = "";
var $_database = "test";
var $db;
public function __construct() {
$this->db = new mysqli($this->_host, $this->_user, $this->_password, $this->_database);
$this->db->set_charset("utf8");
}
public function getConnection() {
if ($this->db->connect_errno > 0) {
die('Unable to connect to database [' . $this->db->connect_error . ']');
}
return $this->db;
}
}
How I can execute query in a single connection

Answer 1

you should instantiate the db object outside of the loop, and close it after:
$con = new db();
$i = 0;
while($i <= 10){
$db = $con->getConnection();
$query = "call rep_summary('$date')";
$result = $db->query($query);
while ($data = $result->fetch_assoc()) {
$user = $data['username'];
$id = $data['id'];
echo $user;
}
$i++;
}
$db->close();

Answer 2

Try moving the db connection and close functions outside the while loop. You can execute multiple queries on same connection.
include 'db.php';
$con = new db();
$db = $con->getConnection();
$date = date('Y-m-d');
$i = 0;
while($i <= 10){
$query = "call rep_summary('$date')";
$result = $db->query($query);
while ($data = $result->fetch_assoc()) {
$user = $data['username'];
$id = $data['id'];
echo $user;
}
$i++;
}
$db->close();