php上传图片类
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php上传图片类
<?php
class ieb_upload
{
var $FormName; //文件域名称
var $Directroy; //上传至目录
var $MaxSize; //最大上传大小
var $CanUpload; //是否可以上传
var $doUpFile; //上传的文件名
var $sm_File; //缩略图名称
var $Error; //错误参数
function ieb_upload($formName = '', $dirPath = '', $maxSize = 2097152) // (1024*2)*1024=2097152 就是 2M
{
global $FormName, $Directroy, $MaxSize, $CanUpload, $Error, $doUpFile, $sm_File;
// 初始化各种参数
$FormName = $formName;
$MaxSize = $maxSize;
$CanUpload = true;
$doUpFile = '';
$sm_File = '';
$Error = 0;
if ($formName == '')
{
$CanUpload = false;
$Error = 1;
break;
}
if ($dirPath == '')
$Directroy = $dirPath;
else
$Directroy = $dirPath.'/';
}
// 检查文件是否存在
function scanFile()
{
global $FormName, $Error, $CanUpload;
if ($CanUpload)
{
$scan = is_readable($_FILES[$FormName]['name']);
if ($scan)
$Error = 2;
return $scan;
}
}
// 获取文件大小
function getSize($format = 'B')
{
global $FormName, $Error, $CanUpload;
if ($CanUpload)
{
if ($_FILES[$FormName]['size'] == 0)
{
$Error = 3;
$CanUpload = false;
}
switch ($format)
{
case 'B':
return $_FILES[$FormName]['size'];
break;
case 'K':
return ($_FILES[$FormName]['size']) / (1024);
break;
case 'M':
return ($_FILES[$FormName]['size']) / (1024 * 1024);
break;
}
}
}
// 获取文件类型
function getExt()
{
global $FormName, $Error, $CanUpload;
if ($CanUpload)
{
$ext = $_FILES[$FormName]['name'];
$extStr = explode('.', $ext);
$count = count($extStr)-1;
}
return $extStr[$count];
}
// 获取文件名称
function getName()
{
global $FormName, $CanUpload;
if ($CanUpload)
return $_FILES[$FormName]['name'];
}
// 新建文件名
function newName()
{
global $CanUpload, $FormName;
if ($CanUpload)
{
$FullName = $_FILES[$FormName]['name'];
$extStr = explode('.', $FullName);
$count = count($extStr)-1;
$ext = $extStr[$count];
return date('YmdHis').rand(0, 9).'.'.$ext;
}
}
// 上传文件
function upload($fileName = '')
{
global $FormName, $Directroy, $CanUpload, $Error, $doUpFile;
if ($CanUpload)
{
if ($_FILES[$FormName]['size'] == 0)
{
$Error = 3;
$CanUpload = false;
return $Error;
break;
}
}
if ($CanUpload)
{
if ($fileName == '')
$fileName = $_FILES[$FormName]['name'];
$doUpload = @copy($_FILES[$FormName]['tmp_name'], $Directroy.$fileName);
if ($doUpload)
{
$doUpFile = $fileName;
chmod($Directroy.$fileName, 0777);
return true;
}
else
{
$Error = 4;
return $Error;
}
}
}
// 创建图片缩略图
function thumb($dscChar = '', $width = 150, $height = 113)
{
global $CanUpload, $Error, $Directroy, $doUpFile, $sm_File;
if ($CanUpload && $doUpFile != '')
{
$srcFile = $doUpFile;
if ($dscChar == '')
$dscChar = 'sm_';
$dscFile = $Directroy.$dscChar.$srcFile;
$data = getimagesize($Directroy.$srcFile, &$info);
switch ($data[2])
{
case 1:
$im = @imagecreatefromgif($Directroy.$srcFile);
break;
case 2:
$im = @imagecreatefromjpeg($Directroy.$srcFile);
break;
case 3:
$im = @imagecreatefrompng($Directroy.$srcFile);
break;
}
$srcW = imagesx($im);
$srcH = imagesy($im);
$ni = imagecreatetruecolor($width, $height);
imagecopyresized($ni, $im, 0, 0, 0, 0, $width, $height, $srcW, $srcH);
$cr = imagejpeg($ni, $dscFile);
chmod($dscFile, 0777);
if ($cr)
{
$sm_File = $dscFile;
return true;
}
else
{
$Error = 5;
return $Error;
}
}
}
// 显示错误参数
function Err()
{
global $Error;
return $Error;
}
// 上传后的文件名
function UpFile()
{
global $doUpFile, $Error;
if ($doUpFile != '')
return $doUpFile;
else
$Error = 6;
}
// 上传文件的路径
function filePath()
{
global $Directroy, $doUpFile, $Error;
if ($doUpFile != '')
return $Directroy.$doUpFile;
else
$Error = 6;
}
// 缩略图文件名称
function thumbMap()
{
global $sm_File, $Error;
if ($sm_File != '')
return $sm_File;
else
$Error = 6;
}
// 显示版本信息
function ieb_version()
{
return 'IEB_UPLOAD CLASS Ver 1.1';
}
}
?>
使用方法
?
<?php
// 加载上传类
// include('ieb_upload.inc');
?>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>无标题文档</title>
</head>
<body style="font-size:12px;">
<form action="" method="post" enctype="multipart/form-data" name="form1">
<input type="file" name="file">
<input type="submit" name="Submit" value="提交">
<input name="scan" type="hidden" id="up" value="true">
</form><b /><br/>
<?php
if (isset($_REQUEST['scan']))
{
// 声明一个上传类
$upfos = new ieb_upload('file', 'tmp');
// 返回将要上传的文件名称
echo '文件名称：'.$upfos->getName().'<br/>';
// 返回文件后缀名
echo '文件类型：'.$upfos->getExt().'<br/>';
// 返回文件大小
echo '文件大小：'.$upfos->getSize().'<br/>';
// 随机生成的文件名
echo '随机文件：'.$upfos->newName().'<br/>';
// 上传文件
$upfos->upload();
// 生成缩略图
$upfos->thumb();
// 返回生成的文件名
echo '生成文件：'.$upfos->UpFile().'<br/>';
// 返回文件的路径
echo '文件路径：'.$upfos->filePath().'<br/>';
// 返回缩略图的名称
echo '缩略图片：'.$upfos->thumbMap().'<br/>';
// 返回上传类版本信息
echo '版本信息：'.$upfos->ieb_version().'<br/>';
}
?>
</body>
</html>
感谢支持与鼓励～