upload.php

<?php

//file upload.php

$pic = $_FILES['pic'];

echo '<pre>';
print_r($pic);
?>

<form action="upload.php" enctype="multipart/form-data" method="post">

	<input class="tf" type="file" name="pic[]" accept="image/*">
	<input class="tf" type="file" name="pic[]" accept="image/*">
	<input class="tf" type="file" name="pic[]" accept="image/*">
	<input class="tf" type="file" name="pic[]" accept="image/*">

     <input type="submit" value="enviar">
</form>