Base64是网络上最常见的用于传输8Bit字节代码的编码方式之一,大家可以查看RFC2045~RFC2049,上面有MIME的详细规范。
这里我们分享一个将图片转换为base64编码格式的方法:
<?php$img = 'test.jpg';$base64_img = base64EncodeImage($img); echo '<img src="' . $base64_img . '" / alt="在PHP中将图片转换为base64编码的方法" >'; function base64EncodeImage ($image_file) { $base64_image = ''; $image_info = getimagesize($image_file); $image_data = fread(fopen($image_file, 'r'), filesize($image_file)); $base64_image = 'data:' . $image_info['mime'] . ';base64,' . chunk_split(base64_encode($image_data)); return $base64_image;}?>
通过上面的方法转换后得到的base64编码字符串,可以存放到数据库中,需要时可以直接从数据库中读取,减少访问图片时的请求数量。
另:这个方法已经包含进 MiniFramework的全局函数库中了。
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