PHP implémente la lecture et la sauvegarde du contenu d'image encodé en base64

<?php
header(&#39;Content-type:text/html;charset=utf-8&#39;);
//读取图片文件，转换成base64编码格式
$image_file = &#39;./4296762_165319032930_2.jpg&#39;;
$image_info = getimagesize($image_file);
$base64_image_content = "data:{$image_info[&#39;mime&#39;]};base64," . chunk_split(base64_encode(file_get_contents($image_file)));

//保存base64字符串为图片
//匹配出图片的格式
if (preg_match(&#39;/^(data:\s*image\/(\w+);base64,)/&#39;, $base64_image_content, $result)){
 $type = $result[2];
 $new_file = "./test.{$type}";
 if (file_put_contents($new_file, base64_decode(str_replace($result[1], &#39;&#39;, $base64_image_content)))){
  echo &#39;新文件保存成功：&#39;, $new_file;
 }

}
?>

<img src="<?php echo $base64_image_content;?>" />