PHP多个图像上传检查空图像并上传非空图像
我需要有关PHP上传具有不同逻辑的多个图像的帮助。
我有1个主图像输入按钮和4个可选图像输入按钮。
第一种逻辑：上传1-4张图片中的所有图片
第二逻辑：请勿上传1-4张图像中的任何图像
第三逻辑：上传一些图片，请勿上传1-4图片中的某些图片。
并检查图像文件的类型和大小不应大于1MB。将图像上传到目标文件夹中，然后在'product_image'表和id as foreign key from product表的'product'表中插入1-4张图像的值，并在 <?php
include_once('includes/connect_database.php');
if(isset($_POST['submit'])){
// create array variable to handle error
$error = array();
function generateRandomString($length = 8) {
$characters = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
$charactersLength = strlen($characters);
$randomString = '';
for ($i = 0; $i < $length; $i++) {
$randomString .= $characters[rand(0, $charactersLength - 1)];
}
return $randomString;
}
$product_name = $_POST['product_name'];
$product_new_name = strtoupper($product_name);
$product_price = $_POST['product_price'];
$product_image = $_FILES['product_image']['name'];
$product_image_tmp = $_FILES['product_image']['tmp_name'];
$temp = explode(".", $product_image);
$extension = end($temp);
$filename = basename($_FILES["product_image"]["name"]);
$filename = generateRandomString() . strrchr($filename, '.');
$product_image1 = $_FILES['product_image1']['name'];
$product_image_tmp1 = $_FILES['product_image1']['tmp_name'];
$temp1 = explode(".", $product_image1);
$extension1 = end($temp1);
$filename1 = basename($_FILES["product_image1"]["name"]);
$filename1 = generateRandomString() . strrchr($filename1, '.');
$product_image2 = $_FILES['product_image2']['name'];
$product_image_tmp2 = $_FILES['product_image2']['tmp_name'];
$temp2 = explode(".", $product_image2);
$extension2 = end($temp2);
$filename2 = basename($_FILES["product_image2"]["name"]);
$filename2 = generateRandomString() . strrchr($filename2, '.');
$product_image3 = $_FILES['product_image3']['name'];
$product_image_tmp3 = $_FILES['product_image3']['tmp_name'];
$temp3 = explode(".", $product_image3);
$extension3 = end($temp3);
$filename3 = basename($_FILES["product_image3"]["name"]);
$filename3 = generateRandomString() . strrchr($filename3, '.');
$product_image4 = $_FILES['product_image4']['name'];
$product_image_tmp4 = $_FILES['product_image4']['tmp_name'];
$temp4 = explode(".", $product_image4);
$extension4 = end($temp4);
$filename4 = basename($_FILES["product_image4"]["name"]);
$filename4 = generateRandomString() . strrchr($filename4, '.');
$allowed_image_extension = array(
"png",
"jpg",
"jpeg"
);
// Get image file extension
$file_extension = pathinfo($_FILES["product_image"]["name"], PATHINFO_EXTENSION);
$file_extension1 = pathinfo($_FILES["product_image1"]["name"], PATHINFO_EXTENSION);
$file_extension2 = pathinfo($_FILES["product_image2"]["name"], PATHINFO_EXTENSION);
$file_extension3 = pathinfo($_FILES["product_image3"]["name"], PATHINFO_EXTENSION);
$file_extension4 = pathinfo($_FILES["product_image4"]["name"], PATHINFO_EXTENSION);
if (empty($product_image1) && empty($product_image2) && empty($product_image3) && empty($product_image4)) {
// Validate file input to check if is with valid extension
if (!in_array($file_extension, $allowed_image_extension)) {
$error['error'] = '<span class="label red-alert"><font size="3">Upload valid images. Only PNG and JPG/JPEG are allowed. IF BLOCK</font></span>';
} // Validate image file size
else if (($_FILES["product_image"]["size"] > 1000000)) {
$error['error'] = '<span class="label red-alert"><font size="3">Image size exceeds 1MB IF BLOCK</font></span>';
} else{
move_uploaded_file($product_image_tmp, "uploads/product/".$filename);
$insert = "INSERT INTO product (name, image, price) VALUES ('$product_name','$filename','$product_price')";
$run = mysqli_query($connect, $insert);
if ($run) {
$error['success'] = '<span class="label green-alert"><font size="3">Successfully Saved. IF BLOCK</font></span>';
}else{
$error['error'] = '<span class="label red-alert"><font size="3">Something Went Wrong. IF BLOCK</font></span>';
}
}
}else{
// Validate file input to check if is with valid extension
if (!in_array($file_extension, $allowed_image_extension) || !in_array($file_extension1, $allowed_image_extension) || !in_array($file_extension2, $allowed_image_extension) || !in_array($file_extension3, $allowed_image_extension) || !in_array($file_extension4, $allowed_image_extension)) {
$error['error'] = '<span class="label red-alert"><font size="3">Upload valid images. Only PNG and JPG/JPEG are allowed. ELSE BLOCK</font></span>';
} // Validate image file size
else if (($_FILES["product_image"]["size"] > 1000000) || ($_FILES["product_image1"]["size"] > 1000000) || ($_FILES["product_image2"]["size"] > 1000000) || ($_FILES["product_image3"]["size"] > 1000000) || ($_FILES["product_image4"]["size"] > 1000000)) {
$error['error'] = '<span class="label red-alert"><font size="3">Image size exceeds 1MB ELSE BLOCK</font></span>';
} else{
move_uploaded_file($product_image_tmp, "uploads/product/".$filename);
move_uploaded_file($product_image_tmp1, "uploads/product/".$filename1);
move_uploaded_file($product_image_tmp2, "uploads/product/".$filename2);
move_uploaded_file($product_image_tmp3, "uploads/product/".$filename3);
move_uploaded_file($product_image_tmp4, "uploads/product/".$filename4);
$insert = "INSERT INTO product (name, image, price) VALUES ('$product_name','$filename','$product_price')";
$run = mysqli_query($connect, $insert);
if ($run) {
$error['success'] = '<span class="label green-alert"><font size="3">Successfully Saved. ELSE BLOCK</font></span>';
}else{
$error['error'] = '<span class="label red-alert"><font size="3">Something Went Wrong. ELSE BLOCK</font></span>';
}
}
}
}
?>
表中插入主图像的值。只需查看两个表中的ID 78。
下面是我尝试过的代码：（
<a target="popup" onclick="window.open('', 'popup', 'width=500,height=200,scrollbars=no,toolbar=no,status=no,resizeable=no,menubar=no,location=no,directories=no,top=500,left=500')" href="http://www.your-site.com">Link</a>
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