php - fatal error :未捕获错误:调用未定义函数mysqli_connect()

Question

错误

Fatal error: Uncaught Error: Call to undefined function mysqli_connect() in /var/www/html/login.php:8 Stack trace: #0 {main} thrown in /var/www/html/login.php on line 8

码

<?php
$servername = "172.17.0.2:3306";
$username = "mysql_user";
$password = "mysql_password";
$dbname = "invoice";

// Create connection
$conn = mysqli_connect($servername, $username, $password,$dbname);
?>

我正在从php:7.0-apache docker容器运行它，并且我已经使用以下命令安装了mysqli扩展名:

docker-php-ext-install mysqli 
docker-php-ext-enable mysqli
apachectl restart

我错过了什么？

Answer 1

检查php extension_dir的路径是否正确。
如果不正确或没有路径，
然后在php.ini中添加mysqli.so的绝对路径，

就我而言，mysqli.so位于/usr/local/lib/php/extensions/no-debug-non-zts-20151012
您必须添加，

extension = /usr/local/lib/php/extensions/no-debug-non-zts-20151012/mysqli.so 

在您的php.ini中。