/** * 获取图片的Base64编码(不支持url) * @param $img_file 传入本地图片地址 * @return string */function imgToBase64($img_file) { ???$img_base64 = ‘‘; ???if (file_exists($img_file)) { ???????$app_img_file = $img_file; // 图片路径 ???????$img_info = getimagesize($app_img_file); // 取得图片的大小，类型等 ???????//echo ‘<pre>‘ . print_r($img_info, true) . ‘</pre><br>‘; ???????$fp = fopen($app_img_file, "r"); // 图片是否可读权限 ???????if ($fp) { ???????????$filesize = filesize($app_img_file); ???????????$content = fread($fp, $filesize); ???????????$file_content = chunk_split(base64_encode($content)); // base64编码 ???????????switch ($img_info[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_base64 = ‘data:image/‘ . $img_type . ‘;base64,‘ . $file_content;//合成图片的base64编码 ???????} ???????fclose($fp); ???} ???return $img_base64; //返回图片的base64}//调用使用的方法$img_dir = dirname(__FILE__) . ‘/uploads/img/11213223.jpg‘;$img_base64 = imgToBase64($img_dir);echo ‘<img src="‘ . $img_base64 . ‘">‘; ??????//图片形式展示echo ‘<hr>‘;echo $img_base64; ??????????//输出Base64编码
php 将图片转成base64
原文地址：https://www.cnblogs.com/fpcing/p/8241768.html