树莓派安装的打开phpMyAdmin反复警告Warning in ./libraries/sql.lib.php#613 count()

接上篇：因为phpmyadmin瞎装之后，各种出错，以为弄好了，打开表格查询数据，竟然提示

 “Warning in ./libraries/sql.lib.php#613 count(): Parameter must be an array or an object that implements Countable”

查阅了资料，是因为安装phpMyAdmin时，存储库中的版本（phpMyAdmin v4.6.6）与PHP 7.2+不完全兼容

此错误是因为/usr/share/phpmyadmin/libraries/sql.lib.php引起的，解决办法如下

首先，在编辑sql.lib.php之前备份文件  

sudo cp /usr/share/phpmyadmin/libraries/sql.lib.php /usr/share/phpmyadmin/libraries/sql.lib.php.bak

sudo vi /usr/share/phpmyadmin/libraries/sql.lib.php

将 (count($analyzed_sql_results['select_expr'] == 1)替换为 ((count($analyzed_sql_results['select_expr']) == 1)

参考 https://devanswers.co/problem-php-7-2-phpmyadmin-warning-in-librariessql-count/