Inserts 13000 lot of users into the db

user-insert.php

<?php

const TEST_USERS_OPT = 'test-users-generated';

$generated = get_option( TEST_USERS_OPT );

if( $generated === 'yes' ) {
	return;
}

function do_insert( $place_holders, $values ) {

	global $wpdb;

	update_option( TEST_USERS_OPT, 'yes' );

	$query = "INSERT INTO wp_users (`user_login`, `user_pass`, `user_nicename`, `user_email`, `user_registered`, `display_name`) VALUES ";
	$query .= implode( ', ', $place_holders );
	$sql   = $wpdb->prepare( "$query ", $values );

	$wpdb->query( $sql );
}

$data_to_be_inserted = array();

for( $i = 0; $i <= 13000; $i ++ ) {
	$data_to_be_inserted[] = [
		'user_login'      => 'name-' . $i,
		'user_pass'       => 'test-1'. $i,
		'user_nicename'   => 'test' . $i,
		'user_email'      => $i . 'test@example.com',
		'user_registered' => current_time( 'mysql' ),
		'display_name'    => 'user-' . $i
	];
}

$values = $place_holders = [];

foreach ( $data_to_be_inserted as $data ) {
	array_push( $values,
		$data['user_login'],
		$data['user_pass'],
		$data['user_nicename'],
		$data['user_email'],
		$data['user_registered'],
		$data['display_name'] );
	$place_holders[] = "( %s, %s, %s, %s, %s, %s)";
}

do_insert( $place_holders, $values );