PHP - 获取 base64 img 字符串解码并另存为 jpg（结果为空图像）
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时间：2020-08-25 16:30:44 来源:igfitidea点击:
PHP - get base64 img string decode and save as jpg (resulting empty image )
提问by bombastic
hi i'm actually sending a base64 image string trough ajax to a php script which just decodes string and save content as .jpg file.
嗨，我实际上是通过 ajax 将 base64 图像字符串发送到 php 脚本，该脚本仅对字符串进行解码并将内容保存为 .jpg 文件。
But the result is an empty image.
但结果是一个空图像。
How can this be possible?
这怎么可能？
php script:
php脚本：
$uploadedPhotos = array('photo_1','photo_2','photo_3','photo_4');
foreach ($uploadedPhotos as $file) {
if($this->input->post('photo_1')){
$photoTemp = base64_decode($this->input->post('photo_1'));
/*Set name of the photo for show in the form*/
$this->session->set_userdata('upload_'.$file,'ant');
/*set time of the upload*/
if(!$this->session->userdata('uploading_on_datetime')){
$this->session->set_userdata('uploading_on_datetime',time());
}
$datetime_upload = $this->session->userdata('uploading_on_datetime',true);
/*create temp dir with time and user id*/
$new_dir = 'temp/user_'.$this->session->userdata('user_id',true).'_on_'.$datetime_upload.'/';
@mkdir($new_dir);
/*move uploaded file with new name*/
@file_put_contents( $new_dir.$file.'.jpg',$photoTemp);
}
For ajax it is ok because, echo $photoTemp returns the string.
对于 ajax 没问题，因为 echo $photoTemp 返回字符串。
i tried var_dump(@file_put_contents( $new_dir.$file.'.jpg',$photoTemp));and it returns bool(true)since the image is saved but there is no content in the image :( empty image
我试过了var_dump(@file_put_contents( $new_dir.$file.'.jpg',$photoTemp));，它bool(true)在保存图像后返回，但图像中没有内容:(空图像
for empty image i mean , file is created and named, and it has the same size of the content i pass to php, but when i try to open that image to preview it says, file can't be opened because corrupted or bad file type format
对于空图像，我的意思是，文件已创建并命名，并且它与我传递给 php 的内容大小相同，但是当我尝试打开该图像进行预览时，它说，文件无法打开，因为文件损坏或错误类型格式
anyway this is the JS that takes photo as base64 and send that to php:
无论如何，这是将照片作为base64并将其发送到php的JS：
<script type="text/javascript">
var _min_width = 470;
var _min_height = 330;
var _which;
var _fyle_type;
var io;
var allowed_types = new Array('image/png','image/jpg','image/jpeg');
if (typeof(FileReader) === 'function'){
$('input[type="file"]').on('change', function(e) {
var _file_name = $(this).val();
$('.'+_which+'_holder').text(_file_name);
var file = e.target.files[0];
if (!in_array(file.type,allowed_types) || file.length === 0){
notify("You must select a valid image file!",false,false);
return;
}
if(file.size > 3145728 /*3MB*/){
notify("<?php echo lang('each-photo-1MB'); ?>",false,false);
return;
}
notify_destroy();
var reader = new FileReader();
reader.onload = fileOnload;
reader.readAsDataURL(file);
});
function fileOnload(e) {
var img = document.createElement('img');
img.src = e.target.result;
img.addEventListener('load', function() {
if(img.width < _min_width || img.height < _min_height ){
notify("<?php echo lang('each-photo-1MB'); ?>",false,false);
return;
}
$.ajax({
type:'post',
dataType:'script',
data:{photo_1:e.target.result},
url:_config_base_url+'/upload/upload_photos',
progress:function(e){
console.log(e);
},
success:function(d){
$('body').append('<img src="'+d+'"/>');
}
});
});
}
}
</script>
回答by Yogesh
AFAIK, You have to use image function imagecreatefromstring, imagejpeg to create the images.
AFAIK，您必须使用图像函数 imagecreatefromstring, imagejpeg 来创建图像。
$imageData = base64_decode($imageData);
$source = imagecreatefromstring($imageData);
$rotate = imagerotate($source, $angle, 0); // if want to rotate the image
$imageSave = imagejpeg($rotate,$imageName,100);
imagedestroy($source);
Hope this will help.
希望这会有所帮助。
PHP CODE WITH IMAGE DATA
PHP CODE WITH IMAGE DATA
$imageDataEncoded = base64_encode(file_get_contents('sample.png'));
$imageData = base64_decode($imageDataEncoded);
$source = imagecreatefromstring($imageData);
$angle = 90;
$rotate = imagerotate($source, $angle, 0); // if want to rotate the image
$imageName = "hello1.png";
$imageSave = imagejpeg($rotate,$imageName,100);
imagedestroy($source);
So Following is the php part of your program .. NOTEthe change with comment Change is here
所以以下是你程序的 php 部分 ..NOTE带有注释的更改Change is here
$uploadedPhotos = array('photo_1','photo_2','photo_3','photo_4');
foreach ($uploadedPhotos as $file) {
if($this->input->post($file)){
$imageData = base64_decode($this->input->post($file)); // <-- **Change is here for variable name only**
$photo = imagecreatefromstring($imageData); // <-- **Change is here**
/* Set name of the photo for show in the form */
$this->session->set_userdata('upload_'.$file,'ant');
/*set time of the upload*/
if(!$this->session->userdata('uploading_on_datetime')){
$this->session->set_userdata('uploading_on_datetime',time());
}
$datetime_upload = $this->session->userdata('uploading_on_datetime',true);
/* create temp dir with time and user id */
$new_dir = 'temp/user_'.$this->session->userdata('user_id',true).'_on_'.$datetime_upload.'/';
if(!is_dir($new_dir)){
@mkdir($new_dir);
}
/* move uploaded file with new name */
// @file_put_contents( $new_dir.$file.'.jpg',imagejpeg($photo));
imagejpeg($photo,$new_dir.$file.'.jpg',100); // <-- **Change is here**
}
}
回答by naresh
$data = 'data:image/png;base64,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';
$data = str_replace('data:image/png;base64,', '', $data);
$data = str_replace(' ', '+', $data);
$data = base64_decode($data);
$file = 'images/'.rand() . '.png';
$success = file_put_contents($file, $data);
$data = base64_decode($data);
$source_img = imagecreatefromstring($data);
$rotated_img = imagerotate($source_img, 90, 0);
$file = 'images/'. rand(). '.png';
$imageSave = imagejpeg($rotated_img, $file, 10);
imagedestroy($source_img);
回答by Justin Eldracher
Here's what finally worked for me. You'll have to convert the code to suit your own needs, but this will do it.
这就是最终对我有用的方法。您必须转换代码以满足您自己的需要，但这会做到。
$fname = filter_input(INPUT_POST, "name");
$img = filter_input(INPUT_POST, "image");
$img = str_replace('data:image/png;base64,', '', $img);
$img = str_replace(' ', '+', $img);
$img = base64_decode($img);
file_put_contents($fname, $img);
print "Image has been saved!";
回答by Milind Morey
Decode and save image as PNG
将图像解码并保存为 PNG
header('content-type: image/png');
ob_start();
$ret = fopen($fullurl, 'r', true, $context);
$contents = stream_get_contents($ret);
$base64 = 'data:image/PNG;base64,' . base64_encode($contents);
echo "<img src=$base64 />" ;
ob_end_flush();
回答by Dhiraj
Client need to send base64 to server.
客户端需要将 base64 发送到服务器。
And above answer described code is work perfectly:
上面的答案描述的代码工作得很好：
$imageData = base64_decode($imageData);
$source = imagecreatefromstring($imageData);
$rotate = imagerotate($source, $angle, 0); // if want to rotate the image
$imageSave = imagejpeg($rotate,$imageName,100);
imagedestroy($source);
Thanks
谢谢
回答by Deci
A minor simplification on the example by @naresh. Should deal with permission issues and offer some clarification.
@naresh 对示例进行了小幅简化。应该处理许可问题并提供一些说明。
$data = '<base64_encoded_string>';
$data = base64_decode($data);
$img = imagecreatefromstring($data);
header('Content-Type: image/png');
$file = '<path_to_home_or_user_directory>/decoded_images/test.png';
imagepng($img, $file);
imagedestroy($img);
