php7.4 errors

Hi Jeff,

I did a SAST for PHP 7.3 and the report logged this error for the current plugin version 20201116. Can you have a look, please?

Nom: BBQ Firewall

FILE: /wp-content/plugins/block-bad-queries/block-bad-queries.php
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FOUND 3 ERRORS AFFECTING 3 LINES
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47 | ERROR | The behaviour of hexadecimal numeric strings was inconsistent prior to PHP 7 and support has been removed in PHP 7. Found: ‘0x00’
49 | ERROR | The behaviour of hexadecimal numeric strings was inconsistent prior to PHP 7 and support has been removed in PHP 7. Found: ‘0x3c62723e’
51 | ERROR | The behaviour of hexadecimal numeric strings was inconsistent prior to PHP 7 and support has been removed in PHP 7. Found: ‘0x00’
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