How to convert images using php base64

php Base64 method of converting images: First create a PHP sample file; then use the "file_put_contents('./test_base2.jpg', base64_decode($base64));" method to convert the base64 string into an image. Can.

The operating environment of this tutorial: Windows 7 system, PHP version 5.6. This method is suitable for all brands of computers.

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PHP images and base64 conversion

PHP Convert images to base64 characters String format:

<?php
//Filetype: JPEG,PNG,GIF 
 
$file = "encode.jpg"; //$file：图片地址
if($fp = fopen($file,"rb", 0)) 
{ 
    $gambar = fread($fp,filesize($file)); 
    fclose($fp); 
 
    //获取图片base64 
    $base64 = chunk_split(base64_encode($gambar)); 
    // 输出
    $encode = &#39;<img src="data:image/jpg/png/gif;base64,&#39; . $base64 .&#39;" >&#39;; 
    echo $encode; 
}     
?>

Convert base64 string to image:

//第一个参数图片保存路径以及图片名称 需注意图片后缀 linux请注意文件权限
//第二个参数为图片的base64字符串  ps:下方会贴出图片base64的格式 以及注意事项
 
file_put_contents('./test_base2.jpg', base64_decode($base64));

Detailed explanation of image base64 string:

//读取图片数据
$gambar = fread($fp,filesize($file)); 
//获取图片base64 
$base64 = chunk_split(base64_encode($gambar));
 
 
//$gambar->读取的是图片的数据流
//$base64->将图片数据流转换为base64

The base64 string format of the image obtained at this time is: ps: The data obtained for each image is different, here is just an example

/9j/4AAQSkZJRgABAQEAkACQAAD/4QC....此处省略N多字符串......KKKAP/2Q==

starts with data, which is the image header information added to display the image. So we only use the data of `$base64`

data:image/jpg/png/gif;base64,/9j/4AAQSkZJRgABAQEAkACQAAD/4QC....此处省略N多字符串......KKKAP/2Q==

In addition, we can also append some strings or other data to the picture and save it as a picture

$base64 = chunk_split(base64_encode($gambar) .'#'. base64_encode('举个例子')); 
//将需要追加的数据也转换为base64格式，注意 【#】符号

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