How to upload files in php and display the upload progress, _PHP tutorial

How to upload files in php and display the upload progress,

The example in this article describes how to upload files in php and display the upload progress. Share it with everyone for your reference. The details are as follows:

Remember to make the file larger when uploading, otherwise it will be uploaded before you can see it, and the uploaded file should not be too big. Forget about G. I tried 2G, but PHP couldn't stand it. The one I tested was 300 There are so many M, remember to adjust the small php.ini parameters "Select file => Submit => Get information" in one go ^ ^

<&#63;php
$prefix = ini_get('session.upload_progress.prefix');
$name  = ini_get('session.upload_progress.name');
$key  = $prefix . $name;
session_start();
if (isset($_POST['get_info'])) {
  $logo = $prefix . $_POST['logo'];
  exit(json_encode($_SESSION[$logo]));
} elseif ($_POST) {
  echo '<script>var finashed = true;</script>';
}
&#63;>
<div id="show_info_div"></div>
<form action="index.php" method="POST" enctype="multipart/form-data">
  <input type="hidden" name="<&#63;php echo $name; &#63;>" value="test">
  <input type="file" name="file"><br>
  <input type="submit" value="提交">
  <input type="button" value="获取信息" onclick="getUploadInfo()">
</form>
<script src="jquery.js"></script>
<script>
var sto = null;
var progress = null;
function getUploadInfo()
{
  $.post("index.php", {"get_info": 1, "logo": "test"}, function(data)
  {
    data = eval("(" + data + ")");
    progress = parseInt(parseInt(data.bytes_processed) * 10000 / parseInt(data.content_length)) / 100 + "%";
    document.getElementById("show_info_div").innerHTML = progress;
    sto = setTimeout("getUploadInfo()", 1000);
  });
}
if (typeof(finashed) !== "undefined")
{
  document.getElementById("show_info_div").innerHTML = "100.00% (上传成功！)";
}
</script>

I hope this article will be helpful to everyone’s PHP programming design.

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