php怎么上传所有格式的图片,PHP多种图片格式的简单上传_PHP教程

简单地写了一个PHP的图片上传，可以支持jpg、png、gif等格式的图片，如果你想支持更多的格式，比如bmp，可以自己扩充。不是面向对象的，在这里简单记录下，以便以后取用。

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

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/752564.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/752564.htmlTechArticle简单地写了一个PHP的图片上传，可以支持jpg、png、gif等格式的图片，如果你想支持更多的格式，比如bmp，可以自己扩充。不是面向对象的，...

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