已安裝 php-curl 和 php7.3-curl 但 curl_init() 是“未定義函式”（Debian buster）

升級到 buster 後，我的 Web 伺服器出現問題。PHP 似乎沒有看到 curl 庫：

root@myserver ~ # php -r "curl_init();"
PHP Fatal error:  Uncaught Error: Call to undefined function curl_init() in Command line code:1
Stack trace:
#0 {main}
 thrown in Command line code on line 1

root@myserver ~ # apt-get install php-curl
Reading package lists... Done
Building dependency tree
Reading state information... Done
php-curl is already the newest version (2:7.3+69).
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
root@myserver ~ # apt-get install php7.3-curl
Reading package lists... Done
Building dependency tree
Reading state information... Done
php7.3-curl is already the newest version (7.3.14-1~deb10u1).
0 upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
root@myserver ~ #
root@myserver ~ # php --version
PHP 7.0.33-1~dotdeb+8.1 (cli) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies
   with Zend OPcache v7.0.33-1~dotdeb+8.1, Copyright (c) 1999-2017, by Zend Technologies

一定是非常愚蠢的事情，但是什麼？

你有php7.3-curlPHP 7.3，但你的 PHP CLI 是7.0.33-1~dotdeb+8.1來自Zend OPcache的 PHP 7.0 。

你php7.3-cli安裝了嗎？如果沒有，那麼

sudo apt install php7.3-cli

引用自：https://serverfault.com/questions/1015175