/
function.php
153 lines (131 loc) · 2.54 KB
/
function.php
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<?php
/*
* 创建文件夹
*
* @param string $dir 路径
* @param integer $mode 文件夹权限
* @return boolean
*/
function mk_dir($dir, $mode = 0777)
{
if ( ! is_dir($dir))
{
mk_dir(dirname($dir));
mkdir($dir);
}
}
/*
* 上传文件
*
* @param object $upload 上传对象，可是单个或者数组
* @param boolean $target 上传目标
* @param string $ext 允许上传的文件后缀用逗号分隔
* @param integer $size 上传大小（单位M）
* @param string $rename 重命名
* @return string
*/
function upload($upload, $target = './', $exts = 'jpg,gif,torrent,zip,rar,7z,doc,docx,xls,xlsx,ppt,pptx,mp3,wma,swf,flv,txt', $size = 20, $rename = '')
{
mk_dir($target);
if (is_array($upload['name']))
{
$return = array();
foreach ($upload["name"] as $k => $v)
{
if ( ! empty($upload['name'][$k]))
{
$ext = get_ext($upload['name'][$k]);
if (strpos($exts,$ext) !== false && $upload['size'][$k] < $size * 1024 * 1024)
{
$name = empty($rename) ? upload_name($ext) : upload_rename($rename,$ext);
if (upload_move($upload['tmp_name'][$k],$target.$name))
{
$return[] = $name;
}
}
}
}
return $return;
}
else
{
$return = '';
if ( ! empty($upload['name']))
{
$ext = get_ext($upload['name']);
if(strpos($exts,$ext) !== false && $upload['size'] < $size * 1024 * 1024)
{
$name = empty($rename) ? upload_name($ext) : upload_rename($rename,$ext);
if (upload_move($upload['tmp_name'], $target . $name))
{
$return = $name;
}
}
}
}
return $return;
}
function tt($f)
{
if ( file_exists($f))
{
echo 'y';
}
else
{
echo 'n';
}
}
/*
* 移动上传文件
*
* @param string $from 文件来源
* @param string $target 移动目标地
* @return boolean
*/
function upload_move($from, $target= '')
{
if (function_exists("move_uploaded_file"))
{
if (move_uploaded_file($from, $target))
{
@chmod($target,0755);
return true;
}
}
elseif (copy($from, $target))
{
@chmod($target, 0755);
return true;
}
return false;
}
function upload_name($ext)
{
$name = date('YmdHis');
for ($i=0; $i < 3; $i++)
{
$name.= chr(mt_rand(97, 122));
}
$name = strtoupper(md5($name)) . "." . $ext;
return (string)$name;
}
function upload_rename($rename, $ext)
{
$name = $rename . "." . $ext;
return (string)$name;
}
/*
* 获取文件后缀名
*
* @param string $filename 文件名
* @return string
*/
function get_ext($filename)
{
if(!empty($filename))
{
$tmp = explode(".",strtolower($filename));
return $tmp[1];
}
}