如何仅使用PHP上传4张图片

Question

如何仅使用PHP上传4张图片

这是我的代码..此代码是正确的，我可以上传4张图片

但是当我上传1张图片时..我得到了错误！

像这样的错误：未定义的偏移量：第10行的C：\\ wamp \\ www \\ resize \\ uploader.php中的1

未定义的偏移量：第24行的C：\\ wamp \\ www \\ resize \\ uploader.php中为1

未定义的偏移量：第25行的C：\\ wamp \\ www \\ resize \\ uploader.php中的1

未定义的偏移量：第26行的C：\\ wamp \\ www \\ resize \\ uploader.php中为1

未定义的偏移量：第27行的C：\\ wamp \\ www \\ resize \\ uploader.php中为1

未定义的偏移量：第28行的C：\\ wamp \\ www \\ resize \\ uploader.php中为1

<?php

if(isset($_POST['submit']) and $_SERVER['REQUEST_METHOD'] == "POST"){
//foreach ($_FILES['images']['name'] as $loop => $name) {
for ( $loop = 0; $loop <= 1; $loop++ ) {
$files_folder = 'p/'; // files folder

$formats = array("jpg", "JPG", "png", "PNG", "jpeg", "JPEG"); // allowed formats

$temp = explode(".", $_FILES["images"]["name"][$loop]); // temp name

$extension = end($temp); // ext

$file_size_megabyte = '5'; // set the max file size

$calculation = 1048576 * $file_size_megabyte; // convert from byte to megabyte

$max_file_size = $calculation; // result after converted

$rename = substr(str_shuffle(str_repeat("abcdefghijklmnopqrstuvwxyz0123456789", 6)), 6, 6); // rename file

$uploaded = $files_folder.$rename.'.'.$extension; // uploaded file link

if ((($_FILES["images"]["type"][$loop] == "image/jpeg")
|| ($_FILES["images"]["type"][$loop] == "image/jpg")
|| ($_FILES["images"]["type"][$loop] == "image/pjpeg")
|| ($_FILES["images"]["type"][$loop] == "image/x-png")
|| ($_FILES["images"]["type"][$loop] == "image/png"))
&& ($_FILES["images"]["size"][$loop] <= $max_file_size)
&& in_array($extension, $formats)){
move_uploaded_file($_FILES["images"]["tmp_name"][$loop], $uploaded);
echo $uploaded;
}


}

} 

?>

Answer 1

这是解决方案。

HTML形式为：

<form action="" method="post" enctype="multipart/form-data">
<p>Pictures:
<input type="file" name="images[]" />
<input type="file" name="images[]" />
<input type="file" name="images[]" />
<input type="file" name="images[]" />
<input type="submit" value="Send" />
</p>
</form>

PHP代码为：

<?php
foreach ($_FILES["images"]["error"] as $key => $error) {
    if ($error == UPLOAD_ERR_OK) {
        $tmp_name = $_FILES["images"]["tmp_name"][$key];
        $name = $_FILES["images"]["name"][$key];
        move_uploaded_file($tmp_name, "data/$name");
    }
}
?>