PHP Errors and Warnings for PHP 7

Here are the details showing from compatibility checker:
FILE: /wp-content/plugins/marketpress/includes/addons/mp-pdf-invoice/vendors/dompdf/dompdf.php
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FOUND 1 ERROR AFFECTING 1 LINE
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183 | 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/marketpress/includes/addons/mp-pdf-invoice/vendors/dompdf/include/page_cache.cls.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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40 | WARNING | Method name "Page_Cache::__query" is discouraged; PHP has reserved all method names with a double underscore prefix for future use
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FILE: /wp-content/plugins/marketpress/includes/addons/mp-pdf-invoice/vendors/dompdf/include/table_frame_decorator.cls.php
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FOUND 1 ERROR AFFECTING 1 LINE
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181 | ERROR | Using 'break' outside of a loop or switch structure is invalid and will throw a fatal error since PHP 7.0
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FILE: /wp-content/plugins/marketpress/includes/common/payment-gateways/mijireh/Rest.php
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FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
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34 | WARNING | INI directive 'safe_mode' is deprecated since PHP 5.3 and removed since PHP 5.4.
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FILE: /public_html/wp-content/plugins/marketpress/includes/common/payment-gateways/stripe-files/lib/Stripe/Object.php
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FOUND 0 ERRORS AND 2 WARNINGS AFFECTING 2 LINES
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119 | WARNING | Method name "Stripe_Object::__toJSON" is discouraged; PHP has reserved all method names with a double underscore prefix for future use
132 | WARNING | Method name "Stripe_Object::__toArray" is discouraged; PHP has reserved all method names with a double underscore prefix for future use
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