Unable to connect mysql with php7 in Linux 7

I am getting below error on executing the code.

<
<?php

$dbname = 'upload_ui';
$dbuser = 'nad';
$dbpass = 'nad';
$dbhost = '10.196.84.192';

$link = mysqli_connect($dbhost, $dbuser, $dbpass) or die("Unable to Connect to '$dbhost'");

  }
?>
-->

error:

<
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/bin/mysql/' (tried: /usr/bin/mysql/ (/usr/bin/mysql/: cannot open shared object file: Not a directory), /usr/lib64/php/modules//usr/bin/mysql/.so (/usr/lib64/php/modules//usr/bin/mysql/.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/bin/mysql' (tried: /usr/bin/mysql (/usr/bin/mysql: cannot dynamically load executable), /usr/lib64/php/modules//usr/bin/mysql.so (/usr/lib64/php/modules//usr/bin/mysql.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/mysql' (tried: /usr/lib64/mysql (/usr/lib64/mysql: cannot read file data: Is a directory), /usr/lib64/php/modules//usr/lib64/mysql.so (/usr/lib64/php/modules//usr/lib64/mysql.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library 'mysqli' (tried: /usr/lib64/php/modules/mysqli (/usr/lib64/php/modules/mysqli: cannot open shared object file: No such file or directory), /usr/lib64/php/modules/mysqli.so (/usr/lib64/php/modules/mysqli.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library 'php_mysqli' (tried: /usr/lib64/php/modules/php_mysqli (/usr/lib64/php/modules/php_mysqli: cannot open shared object file: No such file or directory), /usr/lib64/php/modules/php_mysqli.so (/usr/lib64/php/modules/php_mysqli.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
PHP Parse error:  syntax error, unexpected '}', expecting end of file in /root/a.php on line 10
 -->

Any help would be appreciated

Is that a newly occurring error? Did the script work before? Is mysql installed? In what location?

At least the last error line is self- explanatory: I see an unpaired } in your code snippet.

Yes it is new server and setup i installed mysql ,PHP7.2 and apache on LINUX 7.3

[root@~]# php a.php
PHP Warning:  PHP Startup: Unable to load dynamic library 'mysqli.so' (tried: /usr/lib64/php/modules/mysqli.so (/usr/lib64/php/modules/mysqli.so: undefined symbol: mysqlnd_global_stats), /usr/lib64/php/modules/mysqli.so.so (/usr/lib64/php/modules/mysqli.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0

agian same error