felixpenrose/bind-unknown-num-params.php

## bind-unknown-num-params.php
<?php
$arr = [1,2,3];
$in  = str_repeat('?,', count($arr) - 1) . '?';
$sql = "SELECT * FROM table WHERE column IN ($in)";
$stm = $db->prepare($sql);
$stm->execute($arr);
$data = $stm->fetchAll();
	<?php
	$arr = [1,2,3];
	$in = str_repeat('?,', count($arr) - 1) . '?';
	$sql = "SELECT * FROM table WHERE column IN ($in)";
	$stm = $db->prepare($sql);
	$stm->execute($arr);
	$data = $stm->fetchAll();