logo
当前位置:首 页 > 编程技术 >服务器语言 >PHP语言 > 查看文章

PHP多种图片格式的简单上传

PHP语言, 服务器语言 你是第1571个围观者 0条评论 供稿者: 标签:,

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
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>";
?>

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()。

一个有大大梦想但是没有支撑这梦想的技术的攻城狮,大家就当这个博客是你的技术工具箱吧,我会吧我工作中遇到的问题贴在这,大家需要的记得把我放到收藏夹哦! 百度输入“子傲代码”就可以了

—— 陈子傲

admin
众说纷纭Comments
大眼 可爱 大笑 坏笑 害羞 发怒 折磨 快哭了 大哭 白眼 晕 流汗 困 腼腆 惊讶 憨笑 色 得意 骷髅 囧 睡觉 眨眼 亲亲 疑问 闭嘴 难过 淡定 抗议 鄙视 猪头
小提示:直接粘贴图片到输入框试试
努力发送中...
footer logo
未经许可请勿自行使用、转载、修改、复制、发行、出售、发表或以其它方式利用本网站之内容
Copyright ©ziao design Studio All Rights Reserved.沪ICP备14052271号-3