Question

我需要通过浏览器一次上传大量图片（例如200张小图片）。我有这段代码：

<?php
if(isset($_POST['Upload_files']) and $_SERVER['REQUEST_METHOD'] == "POST"){

  echo count($_FILES['files']['name']); // Even if I upload more than 20 files, it still displays 20.

  $target_directory = "upload/";  
  foreach ($_FILES['files']['name'] as $file_number => $file_name) {
    $file = $_FILES["files"]["tmp_name"][$file_number];
    if (mime_content_type($file) != 'image/png' && mime_content_type($file) != 'image/jpeg')
      { $error[] = 'File '.$file_name.' is not in JPG / PNG format!'; continue; }
    else
      { if(move_uploaded_file($file, $target_directory.$file_name)) {$count_of_upload_file++;}}
  }
}

// If files were uploaded 
if($count_of_upload_file != 0){echo 'Your files ('.$count_of_upload_file.' ) were successfully uploaded.';}

// If there was an error
if (isset($error)) {foreach ($error as $display_error) {echo '- '.$display_error.'<br />';}}
?>

<form action="" method="post" enctype="multipart/form-data">
      <input type="file" name="files[]" multiple="multiple" accept="image/*">
      <input type="submit" name="Upload_files" value="Upload files">
</form>

它有效。但是我的提供者将' max_file_uploads '设置为20（我无法更改它）。（Uploadify扩展程序适用于20多个文件，但我想拥有自己的小解决方案。）所以我认为我需要在这里添加一些内容，而不是一次只上传200个文件200个文件（或者二十岁二十岁。但我不知道该怎么做。（使用AJAX？ - 我从来没用过它，所以我真的不知道。）谢谢！

Answer 1

如果您不想使用ajax，则需要一个循环来接收文件

for($i = 0; $i < count($_FILES['files']['tmp_name']); $i++){
    $tmp = $_FILES['files']['tmp_name'][$i];
    $name = md5(microtime());

 if(move_uploaded_file($tmp, "dir/$name.jpg")){
    echo "Uploaded successfully";
 }else{
    echo "failed";
 }
}

在表单中，您必须将所有输入字段命名为files []，例如：

<form action="" method="post" enctype="multipart/form-data">
      <input type="file" name="files[]" multiple="multiple" accept="image/*">
      <input type="file" name="files[]" multiple="multiple" accept="image/*">
      <input type="file" name="files[]" multiple="multiple" accept="image/*">
      <input type="submit" name="Upload_files" value="Upload files">
</form>

或者如果您想使用ajax，这是一个例子： Upload multiple image using AJAX, PHP and jQuery

如何逐个上传多个文件

1 个答案: