html多文件上传只有一个文件被上传

Question

按ctrl同时选中多个文件同时上传，结果只有最后一个被选中的文件被上传，请问什么原因

Answer 1

名字改为数组形式

 <form action="" method="post" enctype="multipart/form-data">
  Send these files:<br />
  <input name="upload[]" type="file" multiple /><br />
  <input type="submit" value="Send files" />
</form>
<?php
print_r($_FILES["upload"]);
  ?>

保存文件

// Count # of uploaded files in array
$total = count($_FILES['upload']['name']);

// Loop through each file
for($i=0; $i<$total; $i++) {
  //Get the temp file path
  $tmpFilePath = $_FILES['upload']['tmp_name'][$i];

  //Make sure we have a filepath
  if ($tmpFilePath != ""){
    //Setup our new file path
    $newFilePath = "./uploadFiles/" . $_FILES['upload']['name'][$i];

    //Upload the file into the temp dir
    if(move_uploaded_file($tmpFilePath, $newFilePath)) {

      //Handle other code here

    }
  }
}