Hướng dẫn base64 to image php

I am trying to convert my base64 image string to an image file. This is my Base64 string:

Nội dung chính

• How to convert base64 to image file in php?
• How convert base64 to image and save to folder in PHP?
• How decode base64 in PHP?
• What is base64 image?

http://pastebin.com/ENkTrGNG

Using following code to convert it into an image file:

function base64_to_jpeg( $base64_string, $output_file ) {
    $ifp = fopen( $output_file, "wb" ); 
    fwrite( $ifp, base64_decode( $base64_string) ); 
    fclose( $ifp ); 
    return( $output_file ); 
}

$image = base64_to_jpeg( $my_base64_string, 'tmp.jpg' );

But I am getting an error of invalid image, whats wrong here?

JasonMArcher

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asked Mar 1, 2013 at 8:49

0

The problem is that data:image/png;base64, is included in the encoded contents. This will result in invalid image data when the base64 function decodes it. Remove that data in the function before decoding the string, like so.

function base64_to_jpeg($base64_string, $output_file) {
    // open the output file for writing
    $ifp = fopen( $output_file, 'wb' ); 

    // split the string on commas
    // $data[ 0 ] == "data:image/png;base64"
    // $data[ 1 ] == 
    $data = explode( ',', $base64_string );

    // we could add validation here with ensuring count( $data ) > 1
    fwrite( $ifp, base64_decode( $data[ 1 ] ) );

    // clean up the file resource
    fclose( $ifp ); 

    return $output_file; 
}

answered Mar 1, 2013 at 8:58

14

An easy way I'm using:

file_put_contents($output_file, file_get_contents($base64_string));

This works well because file_get_contents can read data from a URI, including a data:// URI.

miken32

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answered Apr 10, 2018 at 14:52

Henry TrầnHenry Trần

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5

You need to remove the part that says data:image/png;base64, at the beginning of the image data. The actual base64 data comes after that.

Just strip everything up to and including base64, (before calling base64_decode() on the data) and you'll be fine.

ashleedawg

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answered Mar 1, 2013 at 8:53

aaaaaa123456789aaaaaa123456789

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1

maybe like this

function save_base64_image($base64_image_string, $output_file_without_extension, $path_with_end_slash="" ) {
    //usage:  if( substr( $img_src, 0, 5 ) === "data:" ) {  $filename=save_base64_image($base64_image_string, $output_file_without_extentnion, getcwd() . "/application/assets/pins/$user_id/"); }      
    //
    //data is like:    data:image/png;base64,asdfasdfasdf
    $splited = explode(',', substr( $base64_image_string , 5 ) , 2);
    $mime=$splited[0];
    $data=$splited[1];

    $mime_split_without_base64=explode(';', $mime,2);
    $mime_split=explode('/', $mime_split_without_base64[0],2);
    if(count($mime_split)==2)
    {
        $extension=$mime_split[1];
        if($extension=='jpeg')$extension='jpg';
        //if($extension=='javascript')$extension='js';
        //if($extension=='text')$extension='txt';
        $output_file_with_extension=$output_file_without_extension.'.'.$extension;
    }
    file_put_contents( $path_with_end_slash . $output_file_with_extension, base64_decode($data) );
    return $output_file_with_extension;
}

answered May 25, 2016 at 17:26

1

That's an old thread, but in case you want to upload the image having same extension-

    $image = $request->image;
    $imageInfo = explode(";base64,", $image);
    $imgExt = str_replace('data:image/', '', $imageInfo[0]);      
    $image = str_replace(' ', '+', $imageInfo[1]);
    $imageName = "post-".time().".".$imgExt;
    Storage::disk('public_feeds')->put($imageName, base64_decode($image));

You can create 'public_feeds' in laravel's filesystem.php-

   'public_feeds' => [
        'driver' => 'local',
        'root'   => public_path() . '/uploads/feeds',
    ],

answered Dec 31, 2018 at 17:39

1

if($_SERVER['REQUEST_METHOD']=='POST'){
$image_no="5";//or Anything You Need
$image = $_POST['image'];
$path = "uploads/".$image_no.".png";

$status = file_put_contents($path,base64_decode($image));
if($status){
 echo "Successfully Uploaded";
}else{
 echo "Upload failed";
}
}

Julfikar

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answered Oct 12, 2017 at 11:44

3

This code worked for me.

answered Aug 21, 2019 at 6:41

Fazil RazaFazil Raza

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$datetime = date("Y-m-d h:i:s");
$timestamp = strtotime($datetime);
$image = $_POST['image'];
$imgdata = base64_decode($image);
$f = finfo_open();
$mime_type = finfo_buffer($f, $imgdata, FILEINFO_MIME_TYPE);
$temp=explode('/',$mime_type);
$path = "uploads/$timestamp.$temp[1]";
file_put_contents($path,base64_decode($image));
echo "Successfully Uploaded->>> $timestamp.$temp[1]";

This will be enough for image processing. Special thanks to Mr. Dev Karan Sharma

answered Jul 10, 2018 at 12:09

How to convert base64 to image file in php?

Using following code to convert it into an image file: function base64_to_jpeg( $base64_string, $output_file ) { $ifp = fopen( $output_file, "wb" ); fwrite( $ifp, base64_decode( $base64_string) ); fclose( $ifp ); return( $output_file ); } $image = base64_to_jpeg( $my_base64_string, 'tmp. jpg' );

How convert base64 to image and save to folder in PHP?

You shouldn't have to; Base64 images can be loaded directly inside of an tag. If the value is getting stored in the database Base64-encoded, simply load it as you would any other image (making sure to include the Base64 prefix). If you really want to convert back, you can use base64_decode() .

How decode base64 in PHP?

The base64_decode() is an inbuilt function in PHP which is used to Decodes data which is encoded in MIME base64. Parameters: This function accepts two parameter as mentioned above and described below: $data: It is mandatory parameter which contains the encoded string. $strict: It is an optional parameter.

What is base64 image?

Base64 encoding is a way to encode binary data in ASCII text. It's primarily used to store or transfer images, audio files, and other media online. It is also often used when there are limitations on the characters that can be used in a filename for various reasons.