PHP支持多种格式图片上传(支持jpg、png、gif)

<?php
include_once("db.php");
include_once("dbinfo.php");
$connector = new nmdb($host, $username, $password);
$connector -> select_db($database);
$work_group = check_input($_post['work_group']);
$name = check_input($_post['name']);
$tel = check_input($_post['tel']);
$id_card = check_input($_post['id_card']);
$work_name = check_input($_post['work_name']);
$place = check_input($_post['place']);
$work1 = check_input($_post['work1']);
date_default_timezone_set('prc');
$date = date("y-m-d h:i:s");
$quality = 100;
$quality2 = 70;
$quality_png = 9;
$quality2_png = 7;
if(isset($_files['work1']) && $_files['work1']['error']==0)
{
$size = getimagesize($_files['work1']['tmp_name']);
$original = $_files['work1']['tmp_name'];
$type = $_files['work1']['type'];
//echo $type;
$target_name = date('ymdhis').'_'.preg_replace('`[^a-z0-9-_.]`i','',$_files['work1']['name']);
$work1 = $target_name;
$target = dirname(__file__).'/uploads/'.$target_name;
switch($type)
{
case "image/jpeg":
$resultimage = imagecreatefromjpeg($original);
imagejpeg($resultimage, $target, $quality);
break;
case "image/png":
$resultimage = imagecreatefrompng($original);
imagepng($resultimage, $target, $quality_png);
break;
case "image/gif":
$resultimage = imagecreatefromgif($original);
imagegif($resultimage, $target, $quality);
break;
default :
die("不支持此文件类型");
exit;
}
$work1_small = $target_name;
$target = dirname(__file__).'/uploads/small/'.$target_name;
switch($type)
{
case "image/jpeg":
$resultimage = imagecreatefromjpeg($original);
imagejpeg($resultimage, $target, $quality2);
break;
case "image/png":
$resultimage = imagecreatefrompng($original);
imagepng($resultimage, $target, $quality2_png);
break;
case "image/gif":
$resultimage = imagecreatefromgif($original);
imagegif($resultimage, $target, $quality2);
break;
default :
die("不支持此文件类型");
exit;
}
}
if(isset($_files['work2']) && $_files['work2']['error']==0)
{
$size = getimagesize($_files['work2']['tmp_name']);
$original = $_files['work2']['tmp_name'];
$type = $_files['work2']['type'];
$target_name = date('ymdhis').'_'.preg_replace('`[^a-z0-9-_.]`i','',$_files['work2']['name']);
$work2 = $target_name;
$target = dirname(__file__).'/uploads/'.$target_name;
switch($type)
{
case "image/jpeg":
$resultimage = imagecreatefromjpeg($original);
imagejpeg($resultimage, $target, $quality);
break;
case "image/png":
$resultimage = imagecreatefrompng($original);
imagepng($resultimage, $target, $quality_png);
break;
case "image/gif":
$resultimage = imagecreatefromgif($original);
imagegif($resultimage, $target, $quality);
break;
default :
die("不支持此文件类型");
exit;
}
$work2_small = $target_name;
$target = dirname(__file__).'/uploads/small/'.$target_name;
switch($type)
{
case "image/jpeg":
$resultimage = imagecreatefromjpeg($original);
imagejpeg($resultimage, $target, $quality2);
break;
case "image/png":
$resultimage = imagecreatefrompng($original);
imagepng($resultimage, $target, $quality2_png);
break;
case "image/gif":
$resultimage = imagecreatefromgif($original);
imagegif($resultimage, $target, $quality2);
break;
default :
die("不支持此文件类型");
exit;
}
}
$sql="insert into photo(work_group,name,tel,id_card,work_name,place,work,work_small,date) values('$work_group','$name','$tel','$id_card','$work_name','$place','$work1','$work1_small','$date')";
//echo $sql;
$result = $connector -> query($sql) or die(mysql_error());
if($work2 != "" && $work2_small != null)
{
$sql2="insert into photo(work_group,name,tel,id_card,work_name,place,work,work_small,date) values('$work_group','$name','$tel','$id_card','$work_name','$place','$work2','$work2_small','$date')";
$result2 = $connector -> query($sql2) or die(mysql_error());
}
$connector -> close($connector);
$page="../upload.php";
echo "<script>alert('上传成功！'); window.location = \"".$page."\";</script>";
?>