Warning in ./libraries/sql.lib.php#613 count()

Problem with phpMyAdmin and PHP 7.2: “Warning in ./libraries/sql.lib.php#613 count(): Parameter must be an array or an object that implements Countable”

Compatibility issue in sql.lib.php with PHP 7.2 and phpMyAdmin

For temporary fix, update sql.lib.php

First, backup sql.lib.php:

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

Edit sql.lib.php in nano:

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

Press CTRL + W and search for

(count($analyzed_sql_results['select_expr'] == 1)

Replace with

((count($analyzed_sql_results['select_expr']) == 1)

Save file and exit. (Press CTRL + X, press Y and then press ENTER)

For permanent fix, update phpMyAdmin to the latest version.