code-boxx/0-PHP-AJAX-IMAGE-UPLOAD.MD

## 0-PHP-AJAX-IMAGE-UPLOAD.MD

      
    Raw
  

              0-PHP-AJAX-IMAGE-UPLOAD.MD
            
          
    PHP AJAX IMAGE UPLOAD

https://code-boxx.com/php-ajax-image-upload/
NOTES


Use 1a-upload.html single image upload, or 2a-upload.html for multiple image uploads.
Captain Obvious - Use http:// and not file://.

LICENSE

Copyright by Code Boxx
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

  
## 1a-upload.html
<!DOCTYPE html>
<html>
  <head>
    <title>
      AJAX Image Upload Demo
    </title>
    <link rel="stylesheet" type="text/css" href="x-theme.css">
    <script src="1b-upload.js"></script>
  </head>
  <body>
    <form id="upForm" onsubmit="return up();">
      <input type="file" accept="image/*" name="upFile" required>
      <input type="submit" value="Upload">
    </form>
  </body>
</html>

## 1b-upload.js
function up () {
  // (A) GET SELECTED IMAGE
  var data = new FormData(document.getElementById("upForm"));

  // (B) AJAX UPLOAD
  fetch("1c-upload.php", { method:"POST", body:data })
  .then(res => res.text())
  .then(txt => alert(txt))
  .catch(err => console.error(err));
  return false;
}

## 1c-upload.php
<?php
$src = $_FILES["upFile"]["tmp_name"];
$dst = $_FILES["upFile"]["name"];
echo move_uploaded_file($src, $dst) ? "OK" : "ERROR" ;

## 2a-upload.html
<!DOCTYPE html>
<html>
  <head>
    <title>
      AJAX Image Upload Demo
    </title>
    <link rel="stylesheet" type="text/css" href="x-theme.css">
    <script src="2b-upload.js"></script>
  </head>
  <body>
    <!-- (A) UPLOAD FORM -->
    <form id="upForm" onsubmit="return up.add();">
      <input type="file" accept="image/*" id="upFile" required multiple>
      <input type="submit" value="Upload" id="upGo" disabled>
    </form>

    <!-- (B) UPLOAD STATUS -->
    <div id="upStat"></div>
  </body>
</html>

## 2b-upload.js
var up = {
  // (A) INIT
  upForm : null, // html form
  upFile : null, // html file selector
  upGo : null,   // html submit button
  upStat : null, // html status display
  queue : [],    // upload queue
  init : () => {
    up.upForm = document.getElementById("upForm");
    up.upFile = document.getElementById("upFile");
    up.upGo = document.getElementById("upGo");
    up.upStat = document.getElementById("upStat");
    up.upGo.disabled = false;
  },

  // (B) ADD TO UPLOAD QUEUE
  add : () => {
    // (B1) DISABLE SUBMIT BUTTON
    up.upGo.disabled = true;

    // (B2) GET FILES + RESET FIELD
    for (let f of up.upFile.files) { up.queue.push(f); }
    up.upForm.reset();

    // (B3) AJAX UPLOAD
    up.ajax();
    return false;
  },

  // (C) AJAX UPLOAD
  ajax : () => {
    // (C1) APPEND FIRST FILE IN QUEUE
    var data = new FormData();
    data.append("upFile", up.queue[0]);

    // (C2) UPLOAD
    fetch("2c-upload.php", { method:"POST", body:data })
    .then(res => res.text())
    .then(txt => {
      // (C2-1) SHOW UPLOAD STATUS
      up.upStat.innerHTML += `<div>${up.queue[0].name} - ${txt}</div>`;

      // (C2-2) NEXT FILE
      up.queue.shift();
      if (up.queue.length!=0) { up.ajax(); }
      else { up.upGo.disabled = false; }
    })
    .catch(err => {
      // (C2-3) ERROR!
      up.upStat.innerHTML += `<div>${err.message}</div>`;
      console.error(err);
    });
  }
};
window.onload = up.init;

## 2c-upload.php
<?php
$src = $_FILES["upFile"]["tmp_name"];
$dst = $_FILES["upFile"]["name"];
echo move_uploaded_file($src, $dst) ? "OK" : "ERROR" ;
	<!DOCTYPE html>
	<html>
	<head>
	<title>
	AJAX Image Upload Demo
	</title>
	<link rel="stylesheet" type="text/css" href="x-theme.css">
	<script src="1b-upload.js"></script>
	</head>
	<body>
	<form id="upForm" onsubmit="return up();">
	<input type="file" accept="image/*" name="upFile" required>
	<input type="submit" value="Upload">
	</form>
	</body>
	</html>
	function up () {
	// (A) GET SELECTED IMAGE
	var data = new FormData(document.getElementById("upForm"));

	// (B) AJAX UPLOAD
	fetch("1c-upload.php", { method:"POST", body:data })
	.then(res => res.text())
	.then(txt => alert(txt))
	.catch(err => console.error(err));
	return false;
	}
	<?php
	$src = $_FILES["upFile"]["tmp_name"];
	$dst = $_FILES["upFile"]["name"];
	echo move_uploaded_file($src, $dst) ? "OK" : "ERROR" ;
	var up = {
	// (A) INIT
	upForm : null, // html form
	upFile : null, // html file selector
	upGo : null, // html submit button
	upStat : null, // html status display
	queue : [], // upload queue
	init : () => {
	up.upForm = document.getElementById("upForm");
	up.upFile = document.getElementById("upFile");
	up.upGo = document.getElementById("upGo");
	up.upStat = document.getElementById("upStat");
	up.upGo.disabled = false;
	},

	// (B) ADD TO UPLOAD QUEUE
	add : () => {
	// (B1) DISABLE SUBMIT BUTTON
	up.upGo.disabled = true;

	// (B2) GET FILES + RESET FIELD
	for (let f of up.upFile.files) { up.queue.push(f); }
	up.upForm.reset();

	// (B3) AJAX UPLOAD
	up.ajax();
	return false;
	},

	// (C) AJAX UPLOAD
	ajax : () => {
	// (C1) APPEND FIRST FILE IN QUEUE
	var data = new FormData();
	data.append("upFile", up.queue[0]);

	// (C2) UPLOAD
	fetch("2c-upload.php", { method:"POST", body:data })
	.then(res => res.text())
	.then(txt => {
	// (C2-1) SHOW UPLOAD STATUS
	up.upStat.innerHTML += `<div>${up.queue[0].name} - ${txt}</div>`;

	// (C2-2) NEXT FILE
	up.queue.shift();
	if (up.queue.length!=0) { up.ajax(); }
	else { up.upGo.disabled = false; }
	})
	.catch(err => {
	// (C2-3) ERROR!
	up.upStat.innerHTML += `<div>${err.message}</div>`;
	console.error(err);
	});
	}
	};
	window.onload = up.init;