php将image转换为base64编码

<?php
$file = "example.jpg";
$type = getimagesize( $file ); //取得图片的大小，类型等
$file_content = base64_encode( file_get_contents( $file ) );
switch ( $type[2] ) { //判读图片类型
    case 1:
        $img_type = "gif";
        break;
    case 2:
        $img_type = "jpg";
        break;
    case 3:
        $img_type = "png";
        break;
}
$img = 'data:image/' . $img_type . ';base64,' . $file_content; //合成图片的base64编码

echo '<img src="' . $img . '" >';

import base64

path = r'C:\Users\Administrator\Desktop\logo.png'

f = open(path,'rb')
b64 = base64.b64encode(f.read())
f.close()

print b64