一个或多个文件下传-php

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0&&$file[size]>$maxsize)return "size";
  if(!is_dir($dir))mkdir($dir);
  list($second,$unix)=explode(" ",microtime());
  $name=$unix.($second*100000000).strstr($file[name],".");//根据时间为上传的文件重新命名，精确到微秒
  move_uploaded_file($file[tmp_name], $dir.$name);
  return $name;
 }
}
/*
 * $field 指定form表单中的input字段名最后以[]结尾，例如:image[]
 */
function uploadfile_table($field,$type,$dir,$maxsize=0){
 if($_FILES[$field]!=null){
  $file=$_FILES[$field];
  $count=count($file[name]);
  $arr=array();
  if(!is_dir($dir))mkdir($dir);
  for($i=0;$i<$count;$i++){
   if($file[error][$i]==1){
    $arr[$i]="error";
    continue;
   }
   if($type!=strstr($file[type][$i],"/",true)){
    $arr[$i]="type";
    continue;
   }
   if($maxsize>0&&$file[size][$i]>$maxsize){
    $arr[$i]="size";
    continue;
   }
   list($second,$unix)=explode(" ",microtime());
   $name=$unix.($second*100000000).strstr($file[name][$i],".");
   move_uploaded_file($file[tmp_name][$i], $dir.$name);
   $arr[$i]=$name;
  }
  return $arr; 
 }
 
}
echo "
";
//print_r(uploadfile("upimage", "image", $_SERVER['DOCUMENT_ROOT']."/picture/",5120));//上传单个文件
print_r(uploadfile_table("upimage", "image", $_SERVER['DOCUMENT_ROOT']."/picture/"));//上传多个文件
echo "
"
?>

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