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2、前端图片压缩后，请求到自定义的接口upload_deal.php.代码如下
'',
'status'=>'error',
'img_url'=>''
);
if(!is_dir($folder))
{
if(!mkdir($folder, 0777, true)){
$out['msg'] = '图片目录创建失败！';
echo json_encode($out);
exit;
}
}
$im = $_FILES[$filename]['tmp_name']; //上传图片资源
$maxwidth="1056"; //设置图片的最大宽度
$maxheight="500"; //设置图片的最大高度
$imgname = $folder.$newName; //图片存放路径 根据自己图片路径而定
$filetype=$_FILES[$filename]['type'];//图片类型
$result = thumbImage($im,$maxwidth,$maxheight,$imgname,$filetype);
if($result){
$out['msg'] = '图片上传成功';
$out['status'] = 'success';
$out['img_url'] = $folder.$newName;
}else{
$out['msg'] = '图片上传失败';
}
return json_encode($out);
exit;
}
//压缩图片
function thumbImage($im,$maxwidth,$maxheight,$name,$filetype)
{
switch ($filetype) {
case 'image/pjpeg':
case 'image/jpeg':
$im = imagecreatefromjpeg($im); //PHP图片处理系统函数
break;
case 'image/gif':
$im = imagecreatefromgif($im);
break;
case 'image/png':
$im = imagecreatefrompng($im);
break;
case 'image/wbmp':
$im = imagecreatefromwbmp($im);
break;
}
$resizewidth_tag = $resizeheight_tag = false;
$pic_width = imagesx($im);
$pic_height = imagesy($im);
if(($maxwidth && $pic_width > $maxwidth) || ($maxheight && $pic_height > $maxheight))
{
$resizewidth_tag = $resizeheight_tag = false;
if($maxwidth && $pic_width>$maxwidth)
{
$widthratio = $maxwidth / $pic_width;
$resizewidth_tag = true;
}
if($maxheight && $pic_height>$maxheight)
{
$heightratio = $maxheight / $pic_height;
$resizeheight_tag = true;
}
if($resizewidth_tag && $resizeheight_tag)
{
if($widthratio < $heightratio)
$ratio = $widthratio;
else
$ratio = $heightratio;
}
if($resizewidth_tag && !$resizeheight_tag)
$ratio = $widthratio;
if($resizeheight_tag && !$resizewidth_tag)
$ratio = $heightratio;
$newwidth = $pic_width * $ratio;
$newheight = $pic_height * $ratio;
if(function_exists("imagecopyresampled"))
{
$newim = imagecreatetruecolor($newwidth,$newheight);//PHP图片处理系统函数
imagecopyresampled($newim,$im,0,0,0,0,$newwidth,$newheight,$pic_width,$pic_height);//PHP图片处理系统函数
}
else
{
$newim = imagecreate($newwidth,$newheight);
imagecopyresized($newim,$im,0,0,0,0,$newwidth,$newheight,$pic_width,$pic_height);
}
switch ($filetype) {
case 'image/pjpeg' :
case 'image/jpeg' :
$result = imagejpeg($newim,$name);
break;
case 'image/gif' :
$result = imagegif($newim,$name);
break;
case 'image/png' :
$result = imagepng($newim,$name);
break;
case 'image/wbmp' :
$result = imagewbmp($newim,$name);
break;
}
imagedestroy($newim);
}
else
{
switch ($filetype) {
case 'image/pjpeg' :
case 'image/jpeg' :
$result = imagejpeg($im,$name);
break;
case 'image/gif' :
$result = imagegif($im,$name);
break;
case 'image/png' :
$result = imagepng($im,$name);
break;
case 'image/wbmp' :
$result = imagewbmp($im,$name);
break;
}
}
return $result;
}
总结
以上所述是小编给大家介绍的php处理多图上传压缩代码功能，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对中文源码网网站的支持！