PHP 7 support?

I ran the wpengine tool which test for PHP7 compatibility. https://wpengine.com/blog/php-7-compatibility-checker-plugin/
It returned these findings about contact form db. Do any of these matter? Do you have a plan to update for PHP 7?

FILE: /nas/content/live/stephanieh57/wp-content/plugins/contact-form-7-to-database-extension/phpunit/WP_Mock_Functions.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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48 | WARNING | Function name “__” is discouraged; PHP has reserved all method names with a double underscore prefix for future use
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FILE: /nas/content/live/stephanieh57/wp-content/plugins/contact-form-7-to-database-extension/CFDBWpdbUnbufferedResultIterator.php
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FOUND 6 ERRORS AFFECTING 6 LINES
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72 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
74 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
97 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
100 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
122 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
124 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
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FILE: /nas/content/live/stephanieh57/wp-content/plugins/contact-form-7-to-database-extension/CFDBQueryResultIterator.php
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FOUND 13 ERRORS AFFECTING 13 LINES
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47 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
59 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
85 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
87 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
114 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
121 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
122 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
132 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
136 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
138 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
146 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
150 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
152 | ERROR | Extension ‘mysql_’ is deprecated since PHP 5.5 and removed since PHP 7.0 – use mysqli instead.
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