php 如何从图像资源创建 base64encoded 字符串
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/8502610/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
how to create a base64encoded string from image resource
提问by netzaffin
I have sent a base64 encoded string via AJAX to PHP and created an image resource with imagecreatefromstring- all is fine.
我已经通过 AJAX 向 PHP 发送了一个 base64 编码的字符串并创建了一个图像资源imagecreatefromstring- 一切都很好。
Now I want to get the base64 encoded string after resizing te image, but i CANT find a function to get the base64encoded string.
现在我想在调整图像大小后获取 base64 编码的字符串，但我找不到一个函数来获取 base64encoded 字符串。
回答by Michael Robinson
Taken from http://www.php.net/manual/en/book.image.php#93393
取自http://www.php.net/manual/en/book.image.php#93393
$image = imagecreatefromstring($file);
// start buffering
ob_start();
imagepng($image);
$contents = ob_get_clean();
echo "<img src='data:image/png;base64,".base64_encode($contents)."' />";
imagedestroy($image);
