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>";

　　?>