PHP 7 Compatibility

I ran the PHP Compatibility Checker plugin https://www.ads-software.com/plugins/php-compatibility-checker/
checking for PHP 7 compatibility and got this result for this plugin:

FILE: wp-content/plugins/superslider-show/superslider-show.php
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FOUND 7 ERRORS AFFECTING 4 LINES
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 330 | ERROR | Using 'break' outside of a loop or switch structure is invalid and will throw a fatal error since PHP 7.0
 402 | ERROR | Function eregi() is deprecated since PHP 5.3 and removed since PHP 7.0; use preg_match instead
 402 | ERROR | Extension 'ereg' is deprecated since PHP 5.3 and removed since PHP 7.0 - use pcre instead.
 764 | ERROR | Function mysql_escape_string() is deprecated since PHP 5.3 and removed since PHP 7.0; use mysqli_real_escape_string instead
 764 | ERROR | Extension 'mysql_' is deprecated since PHP 5.5 and removed since PHP 7.0 - use mysqli instead.
 771 | ERROR | Function mysql_escape_string() is deprecated since PHP 5.3 and removed since PHP 7.0; use mysqli_real_escape_string instead
 771 | ERROR | Extension 'mysql_' is deprecated since PHP 5.5 and removed since PHP 7.0 - use mysqli instead.
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