PHP issues

PHP Compatibility Checker gave the following issues for PHP 7,

FILE: /../wp-content/plugins/wp-security-audit-log/classes/Connector/MySQLDB.php
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FOUND 0 ERRORS AND 10 WARNINGS AFFECTING 5 LINES
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309 | WARNING | Function mcrypt_get_iv_size() is deprecated since PHP 7.1; use OpenSSL instead
309 | WARNING | Extension ‘mcrypt’ is deprecated since PHP 7.1 – use openssl (preferred) or pecl/mcrypt once available instead.
310 | WARNING | Function mcrypt_create_iv() is deprecated since PHP 7.1; use OpenSSL instead
310 | WARNING | Extension ‘mcrypt’ is deprecated since PHP 7.1 – use openssl (preferred) or pecl/mcrypt once available instead.
312 | WARNING | Function mcrypt_encrypt() is deprecated since PHP 7.1; use OpenSSL instead
312 | WARNING | Extension ‘mcrypt’ is deprecated since PHP 7.1 – use openssl (preferred) or pecl/mcrypt once available instead.
322 | WARNING | Function mcrypt_get_iv_size() is deprecated since PHP 7.1; use OpenSSL instead
322 | WARNING | Extension ‘mcrypt’ is deprecated since PHP 7.1 – use openssl (preferred) or pecl/mcrypt once available instead.
327 | WARNING | Function mcrypt_decrypt() is deprecated since PHP 7.1; use OpenSSL instead
327 | WARNING | Extension ‘mcrypt’ is deprecated since PHP 7.1 – use openssl (preferred) or pecl/mcrypt once available instead.
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