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/easy-post-types/classes/custom-select/custom-select.php
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FOUND 2 ERRORS AFFECTING 2 LINES
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 113 | ERROR | Function split() is deprecated since PHP 5.3 and removed since PHP 7.0; use preg_split instead
 115 | ERROR | Function split() is deprecated since PHP 5.3 and removed since PHP 7.0; use preg_split instead
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FILE: wp-content/plugins/easy-post-types/classes/custom-checkbox/theme-checkbox-admin.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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 1 | WARNING | No PHP code was found in this file and short open tags are not allowed by this install of PHP. This file may be using short open tags but PHP does not allow them.
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FILE: wp-content/plugins/easy-post-types/classes/custom-image/custom-image.php
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FOUND 2 ERRORS AFFECTING 2 LINES
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 396 | ERROR | Function split() is deprecated since PHP 5.3 and removed since PHP 7.0; use preg_split instead
 398 | ERROR | Function split() is deprecated since PHP 5.3 and removed since PHP 7.0; use preg_split instead
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FILE: wp-content/plugins/easy-post-types/custom-type.php
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FOUND 2 ERRORS AFFECTING 2 LINES
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 738 | ERROR | Function split() is deprecated since PHP 5.3 and removed since PHP 7.0; use preg_split instead
 798 | ERROR | Function split() is deprecated since PHP 5.3 and removed since PHP 7.0; use preg_split instead
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