curlopt_binarytranfer到底是什么意思? [英] what does curlopt_binarytranfer exactly mean?

问题描述

我不明白

CURLOPT_RETURNTRANSFER AND
CURLOPT_BINARYTRANSFER

我写了一个脚本来检查它

i wrote a script to check it

<?php
$image_url = "http://localhost/curl/img1.png";
$ch = curl_init();
$timeout = 0;
curl_setopt ($ch, CURLOPT_URL, $image_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);
$image = curl_exec($ch);
curl_close($ch);
header("Content-type: image/jpeg");
print $image;
?>

在这种情况下，我将图像显示在浏览器中 如果我删除线

in this case i get the image displayed in the browser if i remove the line

curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);

我仍然在浏览器中显示图像.

i still get the image displayed in the browser.

现在，如果我删除行

header("Content-type: image/jpeg");

然后在两种情况下我都将iget二进制数据显示在浏览器中(看起来像垃圾) curl_setopt($ ch，CURLOPT_BINARYTRANSFER，1); 还是我不删除. 那么此选项CURLOPT_BINARYTRANSFER有什么不同?

then iget binary data display in browser(looks like garbage) in both cases whether i remove curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1); or i dont remove. then what difference does this option CURLOPT_BINARYTRANSFER make?

推荐答案

如果我正确理解了此PHP错误报告和解决方案，则PHP似乎不再使用CURLOPT_BINARYTRANSFER.

It looks like CURLOPT_BINARYTRANSFER isn't used by PHP anymore, if I am understanding this PHP bug report and resolution correctly.

https://bugs.php.net/bug.php?id=55635

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