php - I am getting Warning:count():Parameter error
I am getting this error below in my vehicles-update.php and I have also attached my vehicle/index.PHP code. It appears before my header on my phpmotors/index.php page.
Warning: count(): Parameter must be an array or an object that implements Countable in C:\xammp_124\htdocs\phpmotors\vehicles\index.php on line 142 Error shown: if(count($invInfo)<1){
<?php
/***********************************************
* Vehicles Controller
*********************************************/
// Create or access a Session
session_start();
// Get the database connection file
require_once '../library/connections.php';
// Get the database connection file
require_once '../library/functions.php';
// Get the PHP Motors model for use as needed
require_once '../model/main-model.php';
// Get the accounts model
// require_once '../model/classification-model.php';
// Get the accounts model
require_once '../model/vehicles-model.php';
// Get the array of classifications
$classifications = getClassifications();
// var_dump($classifications);
// exit;
// Build a navigation bar using the $classifications array
$navList = '<ul>';
$navList .= "<li><a href='/index.php' title='View the PHP Motors home page'>Home</a></li>";
foreach ($classifications as $classification) {
$navList .= "<li> <a href='/vehicles/?action=classification&classificationName="
.urlencode($classification['classificationName']).
"' title='View our $classification[classificationName] lineup of vehicles'>$classification[classificationName]</a> </li>";
}
$navList .= '</ul>';
$action = filter_input(INPUT_GET, 'action');
if($action == NULL) {
$action = filter_input(INPUT_POST, 'action');
}
switch ($action) {
case 'add-classification':
if (isset($_SESSION['loggedin']) && $_SESSION['clientData']['clientLevel']>1){
include '../view/add-classification.php';
} else {
header('Location: /index.php');
}
break;
case 'add-vehicle':
if (isset($_SESSION['loggedin']) && $_SESSION['clientData']['clientLevel']>1){
include '../view/vehicles-update.php';
} else {
header('Location: /index.php');
}
break;
case 'adding-classification':
// Filter and store the data
$classificationName = filter_input(INPUT_POST, 'classificationName', FILTER_SANITIZE_STRING);
// Check for missing data
if(empty($classificationName)){
$message = '<p>Please provide information for all empty form fields.</p>';
include '../view/add-classification.php';
exit;
}
// Send the data to the model
$regOutcome = regClassification($classificationName);
// Check and report the result
if($regOutcome === 1){
$message = "<p>Thanks for registering $classificationName.</p>";
// Get the array of classifications
$classifications = getClassifications();
// Build a navigation bar using the $classifications array
$navList = '<ul>';
$navList .= "<li><a href='/index.php' title='View the PHP Motors home page'>Home</a></li>";
foreach ($classifications as $classification) {
$navList .= "<li> <a href='/vehicles/?action=classification&classificationName="
.urlencode($classification['classificationName']).
"' title='View our $classification[classificationName] lineup of vehicles'>$classification[classificationName]</a> </li>";
}
$navList .= '</ul>';
include '../view/add-classification.php';
exit;
} else {
$message = "<p>Sorry $classificationName, but the registration failed. Please try again.</p>";
include '../view/add-classification.php';
exit;
}
break;
case 'adding-vehicle':
// Filter and store the data
$invMake = filter_input(INPUT_POST, 'invMake', FILTER_SANITIZE_STRING);
$invModel = filter_input(INPUT_POST, 'invModel', FILTER_SANITIZE_STRING);
$invDescription = filter_input(INPUT_POST, 'invDescription', FILTER_SANITIZE_STRING);
$invImage = filter_input(INPUT_POST, 'invImage', FILTER_SANITIZE_STRING);
$invThumbnail = filter_input(INPUT_POST, 'invThumbnail', FILTER_SANITIZE_STRING);
$invPrice = filter_input(INPUT_POST, 'invPrice', FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_FRACTION);
$invStock = filter_input(INPUT_POST, 'invStock', FILTER_SANITIZE_NUMBER_INT);
$invColor = filter_input(INPUT_POST, 'invColor', FILTER_SANITIZE_STRING);
$classificationId = filter_input(INPUT_POST, 'classificationId', FILTER_SANITIZE_NUMBER_INT);
// Check for missing data
if(empty($invMake)|| empty($invModel)||empty($invDescription)||empty($invImage)||empty($invThumbnail)||empty($invPrice)||empty($invStock)||empty($invColor)||empty($classificationId) ){
$message = '<p>Please provide information for all empty form fields.</p>';
include '../view/add-vehicle.php';
exit;
}
// Send the data to the model
$regOutcome = regVehicle($invMake, $invModel, $invDescription, $invImage, $invThumbnail, $invPrice, $invStock, $invColor, $classificationId);
// Check and report the result
if($regOutcome === 1){
$message = "<p>Thanks for registering $invModel.</p>";
include '../view/add-vehicle.php';
exit;
} else {
$message = "<p>Sorry $classificationName, but the registration failed. Please try again.</p>";
include '../view/add-vehicle.php';
exit;
}
break;
case 'vehicle':
if (isset($_SESSION['message'])) {
$message = $_SESSION['message'];
}
if (isset($_SESSION['loggedin']) && $_SESSION['clientData']['clientLevel']>1){
$classificationList = buildClassificationList($classifications);
include '../view/vehicle-man.php';
} else {
header('Location: /index.php');
}
break;
case 'mod':
$invId = filter_input(INPUT_GET, 'id', FILTER_VALIDATE_INT);
$invInfo = getInvItemInfo($invId);
if(count($invInfo)<1){
$message = 'Sorry, no vehicle information could be found.';
}
include '../view/vehicle-update.php';
exit;
break;
/* * **********************************
* Get vehicles by classificationId
* Used for starting Update & Delete process
* ********************************** */
case 'getInventoryItems':
// Get the classificationId
$classificationId = filter_input(INPUT_GET, 'classificationId', FILTER_SANITIZE_NUMBER_INT);
// Fetch the vehicles by classificationId from the DB
$inventoryArray = getInventoryByClassification($classificationId);
// Convert the array to a JSON object and send it back
echo json_encode($inventoryArray);
break;
case 'updateVehicle':
$classificationId = filter_input(INPUT_POST, 'classificationId', FILTER_SANITIZE_NUMBER_INT);
$invMake = filter_input(INPUT_POST, 'invMake', FILTER_`enter code here`SANITIZE_STRING);
$invModel = filter_input(INPUT_POST, 'invModel', FILTER_SANITIZE_STRING);
$invDescription = filter_input(INPUT_POST, 'invDescription', FILTER_SANITIZE_STRING);
$invImage = filter_input(INPUT_POST, 'invImage', FILTER_SANITIZE_STRING);
$invThumbnail = filter_input(INPUT_POST, 'invThumbnail', FILTER_SANITIZE_STRING);
$invPrice = filter_input(INPUT_POST, 'invPrice', FILTER_SANITIZE_NUMBER_FLOAT, FILTER_FLAG_ALLOW_FRACTION);
$invStock = filter_input(INPUT_POST, 'invStock', FILTER_SANITIZE_NUMBER_INT);
$invColor = filter_input(INPUT_POST, 'invColor', FILTER_SANITIZE_STRING);
$invId = filter_input(INPUT_POST, 'invId', FILTER_SANITIZE_NUMBER_INT);
if (empty($classificationId) || empty($invMake) || empty($invModel) || empty($invDescription) || empty($invImage) || empty($invThumbnail) || empty($invPrice) || empty($invStock) || empty($invColor)) {
$message = '<p>Please complete all information for the updated item! Double check the classification of the item.</p>';
include '../view/vehicle-update.php';
exit;
}
$updateResult = updateVehicle($invMake, $invModel, $invDescription, $invImage, $invThumbnail, $invPrice, $invStock, $invColor, $classificationId, $invId);
if ($updateResult) {
$message = "<p class='notify'>Congratulations, the $invMake $invModel was successfully updated.</p>";
$_SESSION['message'] = $message;
header('location: /vehicles/index.php?action=vehicle');
exit;
} else {
$message = "<p>Error. The vehicle was not updated.</p>";
include '../view/vehicle-update.php';
exit;
}
break;
case 'del':
$invId = filter_input(INPUT_GET, 'id', FILTER_VALIDATE_INT);
$invInfo = getInvItemInfo($invId);
if (count($invInfo) < 1) {
$message = 'Sorry, no vehicle information could be found.';
}
include '../view/vehicle-delete.php';
exit;
break;
case 'deleteVehicle':
$invMake = filter_input(INPUT_POST, 'invMake', FILTER_SANITIZE_STRING);
$invModel = filter_input(INPUT_POST, 'invModel', FILTER_SANITIZE_STRING);
$invId = filter_input(INPUT_POST, 'invId', FILTER_SANITIZE_NUMBER_INT);
$deleteResult = 'deleteVehicle'($invId);
if ($deleteResult) {
$message = "<p class='notice'>Congratulations the, $invMake $invModel was successfully deleted.</p>";
$_SESSION['message'] = $message;
header('location: /vehicles/index.php?action=vehicle');
exit;
} else {
$message = "<p class='notice'>Error: $invMake $invModel was not
deleted.</p>";
$_SESSION['message'] = $message;
header('location: /vehicles/index.php?action=vehicle');
exit;
}
break;
case 'classification':
$classificationName = filter_input(INPUT_GET, 'classificationName', FILTER_SANITIZE_STRING);
$vehicles = getVehiclesByClassification($classificationName);
if(!count($vehicles)){
$message = "<p class='notice'>Sorry, no $classificationName could be found.</p>";
} else {
$vehicleDisplay = buildVehiclesDisplay($vehicles);
}
include '../view/classification.php';
break;
case 'vehicleDetails':
$invId = filter_input(INPUT_GET, 'invid', FILTER_VALIDATE_INT);
$vehicleData = getInvItemInfo($invId);
$_SESSION['vehicleData'] = $vehicleData;
include '../view/vehicle-detail.php';
break;
default:
$classificationList = buildClassificationList($classifications);
include '../view/vehicle-man.php';
break;
}
Answer
Solution:
Take a look at your function getInvItemInfo. What does that function return if no records can be found? If it returns NULL you will receive an error since you are trying to count(NULL).
Try to use the function is_null() instead of count().