<form action="" method="post" enctype="multipart/form-data" name="form1" id="form1">
  <p>
    <label for="textfield"></label>
    <input type="text" name="textfield" id="textfield" />
  </p>
  <p>
    <label for="fileField"></label>
    <input type="file" name="pic" id="fileField" />
  </p>
  
  
  
  <p>
    <input type="submit" name="button" id="button" value="提交" />
  </p>
</form>

<?php 
print_r($_FILES);

if (!empty($_FILES["pic"])){
$pic_info=$_FILES["pic"];
$newfile="dfdsfaf.jpg";
$filename=$newfile;
if(!move_uploaded_file($pic_info["tmp_name"],$filename)){
echo "no";
};


}
 ?>