php上传功能集后缀名判断和随机命名(强力推荐)

不废话了，具体请看下文代码示例讲解。

form.php

upload.php

check.php

= 36){
      $n = 36 + ceil(($n-36)/3) * 3;
      $captchaResult .= substr($captchaSource, $n, 3);
    }else{
      $captchaResult .= substr($captchaSource, $n, 1);
    }
  }
  return $captchaResult;
}
?>

将三个文件整合成一个：

= 36){
      $n = 36 + ceil(($n-36)/3) * 3;
      $captchaResult .= substr($captchaSource, $n, 3);
    }else{
      $captchaResult .= substr($captchaSource, $n, 1);
    }
  }
  return $captchaResult;
}
$type = array("jpg", "gif", "bmp", "jpeg", "png");
// 判断上传文件类型
$fileext = strtolower(fileext($_FILES['file']['name']));
$uploadfilename = random(8);
if(in_array($fileext, $type)){
  $filename = explode(".", $_FILES['file']['name']);
  if(is_uploaded_file($_FILES['file']['tmp_name'])){
//    echo $_FILES['file']['tmp_name'];
    $flag = move_uploaded_file($_FILES['file']['tmp_name'], "/Library/WebServer/documents/test/".$uploadfilename.".".$fileext);
    if($flag){
      echo "上传成功！";
    }else{
      echo "Error.";
    }
    echo "Back";
  }
}
?>


  
  






以上内容就是给大家讲解的php上传功能集后缀名判断和随机命名(强力推荐)，希望大家喜欢。