PHP文件上傳簡單實例

<?php
header("content-type:text/html;charset=utf-8");
$path = getcwd()."/upload/";

if($_POST['submit'])
{
 $fname = $_FILES['ufile']['name'];
 $tmp_name = $_FILES['ufile']['tmp_name'];
//允許上傳的文件后綴名：
 $pathinfo = pathinfo($fname);
 $fext = $pathinfo['extension'];
 $allowf = array("gif","GIF","png","PNG","jpeg","JPEG","jpg","JPG");
if(!in_array($fext,$allowf))
 {
  echo "不允許的文件類型，<a href='test.php'>請重新上傳</a>";
  exit;
 }
/
另一種檢驗允許通過的文件類型方法：
 $type = $_FILES['ufile']['type'];
 switch($type)
  {
   case "image/pjpeg" : $ok = 1;
   break;
   case "image/jpeg" : $ok = 1;
   break;
   case "image/png" : $ok = 1;
   break;
   case "image/gif" : $ok = 1;
   break;
  }
  if($ok||$error==0)
  {
   move_uploaded_file($tmp_name,$path.$fname);
   echo "<script>alert('文件上傳成功！');</script>";
  }/
//文件檢驗通過后上傳： 
 if(move_uploaded_file($tmp_name,$path.$fname))
 {
  echo "文件上傳成功！";
 }
else
 {
  echo "上傳文件失敗!";
 }
}
?>
<form action="<?=$_SERVER['PHP_SELF']?>" method="post" enctype="multipart/form-data">
<p>選擇要上傳的文件：<input type="file" name="ufile"></p>
<p><input type="submit" name="submit" value="上傳"></p>
</form></pre>