PDO update query runs changes no rows. No errors - php

Question

So I'm running a PDO update working, and for some reason it won't update the table...
$business_id = 9874128;
$hidden = 1;
$query = "UPDATE business_property_overrides SET hidden=? WHERE business_id=?";
try {
$stmt = $pdo->prepare($query);
$stmt->execute(array($business_id, $hidden));
}
For some reason this won't update, even though I get no errors. The existing tables schema looks like this, and the data is:
There is an existing data set with business_id = 9874128 and hidden set to 0, but it won't update when I run the above code.
CREATE TABLE `business_property_overrides` (
`business_id` int(11) NOT NULL,
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(512) NOT NULL,
`apt_type` varchar(25) DEFAULT NULL,
`apt_num` varchar(9) DEFAULT NULL,
`street_address` varchar(255) DEFAULT NULL,
`city` varchar(255) DEFAULT NULL,
`state` varchar(255) DEFAULT NULL,
`zip` varchar(25) DEFAULT NULL,
`phone` varchar(11) DEFAULT NULL,
`url` varchar(512) DEFAULT NULL,
`hours` varchar(100) DEFAULT NULL,
`openhours` varchar(100) DEFAULT NULL,
`location` point DEFAULT NULL,
`yelp` varchar(512) DEFAULT '0',
`twitter` varchar(512) DEFAULT '0',
`hidden` tinyint(1) DEFAULT '0',
`merged` int(11) DEFAULT NULL,
`closed` tinyint(1) DEFAULT '0',
PRIMARY KEY (`id`),
UNIQUE KEY `business_id` (`business_id`),
UNIQUE KEY `id` (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=9874134 DEFAULT CHARSET=utf8;

Answer 1

The hidden is TINYINT 1 characters long, you are assigning it business_id which is 7 characters long, that is the error.
Change
$stmt->execute(array($business_id, $hidden));
To:
$stmt->execute(array($hidden,$business_id))

Answer 2

As I've already commented over here, or you can simply use the placeholders of taking no care about the occurence like as
$query = "UPDATE business_property_overrides SET hidden = :hidden WHERE business_id = :business_id";
try {
$stmt = $pdo->prepare($query);
$stmt->execute(array(":business_id" => $business_id, ":hidden" => $hidden));
}