此处一次支持上传2个图片，上传后生成原图和质量较差的图，原图用于保存质量高的图片，质量差的图用于网页显示。
PHP Code复制代码代码如下: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);$page="../upload.php";echo "";?>
有些问题需要说明下：
JPEG图像生成的图像的质量的是一个范围从0（最低质量，最小的文件大小）到100（最高质量，最大文件大小）。而ImagePNG生成图像的质量范围从0到9的，传入的这个范围以外的参数则该函数不会工作。
判断上传文件的类型，$type = $_FILES['work1']['type'];。
创建各种格式的图片可以使用这些函数：imagecreatefromjpeg()、imagecreatefrompng()、imagecreatefromgif()。
http://www.bkjia.com/PHPjc/324447.html www.bkjia.com true http://www.bkjia.com/PHPjc/324447.html TechArticle此处一次支持上传2个图片，上传后生成原图和质量较差的图，原图用于保存质量高的图片，质量差的图用于网页显示。 PHP Code 复制代码 代...