PHP Array to MySQL PDO Statement (Not a function/Saved From Project)

array-to-sql.php

<?php

/*
/* Takes an array of checklist elements from a form and converts it all to a PDO SQL Insert Statemet.
 * This was saved from a project where the following code was no longer being used.
 * It won't do anything without proper input. I put this here as a reference on how to build PDO SQL statements from PHP Arrays.
 */
 
 
if (isset($_REQUEST['vehicleChecklistForm']) && !empty($_REQUEST['vehicleChecklistForm'])) { //Checks if action value exists


$vehicleChecklistForm = $_REQUEST['vehicleChecklistForm'];
$checklist = array();

foreach($vehicleChecklistForm as $ele => $val){ // <- Checklist
	$checklist[$val['name']] = $val['value'];
}

// Build SQL Query for PDO
$checklistSQL = 'INSERT INTO thetable SET id = :user_id, user_log_id = :user_log_id, vehicle_id = :vehicle_id, ';

// Add in all the values that were submitted
foreach($checklist as $key => $val){
	$checklistSQL .= $key.' = :'.$key.', ';	
}
$checklistSQL = rtrim($checklistSQL, ', '); // Remove last comma

// Setup PDO Query
$stmt = $db->prepare($checklistSQL);

// Bind all submitted data
foreach($checklist as $key => $val){
	$theval = strval($val);
	$stmt->bindParam(':'.$key, $theval, PDO::PARAM_STR);
}

// Bind user_id and VehicleID
$stmt->bindParam(':user_id', $_SESSION['agent_id'], PDO::PARAM_STR);
$stmt->bindParam(':user_log_id', $log_id, PDO::PARAM_STR);
$stmt->bindParam(':vehicle_id', $_SESSION['vehicle_id'], PDO::PARAM_STR);
$stmt->execute();
$errors1 = $stmt->errorInfo(); // grab errors

}else{echo 'vehicleChecklistForm is not set..';}
?>