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PHP支持多种格式图片上传(支持jpg、png、gif)

更新时间:2023-04-06 11:06:18 阅读: 评论:0

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

includ冻黄花鱼怎么做好吃e_once(“db.php”);

include_once(“dbinfo.php”);

$connector = ne委托书模板w nmdb($host, $urname, $password);

$connector -> lect_db($databa);

$work_group = check_input($_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_t(‘prc’);

$date = date(“y-m-d h:i:s”);

$quality = 100;

$quality2 = 70;

$quality_png = 9;

$quality2_png = 7;

if(ist($_files[‘work1’]) && $_files[‘work1R牛肉酱的做法大全17;][‘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)

{

ca “image/jpeg”:

$resultimage = imagecreatefromjpeg($original);

imagejpeg($resultimage, $target, $quality);

break;

ca “image/png”:

$resultimage = imagecreatefrompng($original);

imagepng($resultimage, $target, $quality_png);

break;

ca “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)

{

ca “image/jpeg”:

$resultimage = imagecreatefromjpeg($original);

imagejpeg($resultimage, $target, $quality2);

break;

ca “image/png”:

$resultimage = imagecreatefrompng($original);

imagepng($resultimage, $target, $quality2_png);

break;

ca “image/gif”:

$resultimage = imagecreatefromgif($original);

imagegif($resultimage, $target, $quality2);

break;

default :

die(“不支持此文件类型”);

exit;

}

}

if(ist($_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)

{

ca “image/jpeg”:

$resultimage = imagecreatefromjpeg($original);

imagejpeg($resultimage, $target, $quality);

break;

ca “image/png”:

$resultimage = imagecreatefrompng($original);

imagepng($resultimage, $target, $quality_png);

break;

ca “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)

{

ca “image/jpeg”:

$resultimage = imagecreatefromjpeg($original);

imagejpeg($resultimage, $target, $quality2);

break;

ca “image/png”:

$resultimage = imagecreatefrompng($original);

imagepng($resultimage, $target, $quality2_png);

break;

ca “image/gif”:

$resultimage = imagecreatefromgif($original);

imagegif($resultimage, $target, $quality2);

break;

default :

die(“不支持此文件类型”);

exit;

}

}

$sql=”inrt into photo(work_group,name,tel,id_card,work_name,place,work,work_small,date) values(‘$work_group’,’$name’,’$tel’,’$成就感id_card’,’$work_name’,’$place’,’$work1′,’$work1_small’,’$date’)”;

//echo $sql;

$result = $connector -> query($sql) or die(mysql_error());

if($work2 != “” && $work2_small != null)

{

$sql2=”inrt into photo(work_group,name,tel,id_card,work_name,place,work,work_small,date) values(‘$work_group’,’$name’,’$tel’,’$id_card’,’$work_name’,’$place’,’$work2′,’$work2_small’,’$date’)”;

$result2 = $connector -> query($sql2) or die(mysql_error());

}

$connector -> clo($connector);

$page=”../upload.php”;

echo “<script>alert(‘上传成功!’); window.location = \””.$page.”\”;</script>”;

?>

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,忧心忡忡是什么意思最小的文件大小)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()。

本文发布于:2023-04-06 11:06:16,感谢您对本站的认可!

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