
<?php
$valid_formats = array("jpg", "png", "gif", "zip", "bmp");
$max_file_size = 1024*100; //100 kb
$path = "uploads/"; // Upload directory
$count = 0;

if(isset($_POST) and $_SERVER['REQUEST_METHOD'] == "POST"){
	// Loop $_FILES to exeicute all files
	foreach ($_FILES['files']['name'] as $f => $name) {     
	    if ($_FILES['files']['error'][$f] == 4) {
	        continue; // Skip file if any error found
	    }	       
	    if ($_FILES['files']['error'][$f] == 0) {	           
	        if ($_FILES['files']['size'][$f] > $max_file_size) {
	            $message[] = "$name is too large!.";
	            continue; // Skip large files
	        }
			elseif( ! in_array(pathinfo($name, PATHINFO_EXTENSION), $valid_formats) ){
				$message[] = "$name is not a valid format";
				continue; // Skip invalid file formats
			}
	        else{ // No error found! Move uploaded files 
	            if(move_uploaded_file($_FILES["files"]["tmp_name"][$f], $path.$name))
	            $count++; // Number of successfully uploaded file
	        }
	    }
	}
}

?>

<html lang="en">
<head>
  <meta charset="UTF-8" />
  <title>Multiple File Ppload with PHP</title>
</head>
<body>
  <form action="" method="post" enctype="multipart/form-data">
    <input type="file" id="file" name="files[]" multiple="multiple" accept="image/*" />
  <input type="submit" value="Upload!" />
</form>
</body>
</html>