MCrypt – How to delete?

  • Hello,

    I need to upgrade my PHP to 7.4 as it has been running on the outdated 7.3. The PHP Compatibility Check Report is giving me the following errors, how do I fix? Where do I go in the FTP site to update or delete and will this effect the function of my site? Our website does not need a function allowing visitors to log in. 

    Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	748	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	780	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	783	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	788	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	796	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	805	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	807	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	1104	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	1131	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	1136	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	1146	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	1608	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	1679	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	1680	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	1684	ERROR
The constant "MCRYPT_MODE_ECB" is deprecated since PHP 7.1 and removed since PHP 7.2	1782	ERROR
The constant "MCRYPT_MODE_CBC" is deprecated since PHP 7.1 and removed since PHP 7.2	1782	ERROR
The constant "MCRYPT_MODE_CFB" is deprecated since PHP 7.1 and removed since PHP 7.2	1782	ERROR
The constant "MCRYPT_MODE_NOFB" is deprecated since PHP 7.1 and removed since PHP 7.2	1782	ERROR
The constant "MCRYPT_MODE_OFB" is deprecated since PHP 7.1 and removed since PHP 7.2	1782	ERROR
The constant "MCRYPT_MODE_STREAM" is deprecated since PHP 7.1 and removed since PHP 7.2	1782	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	1783	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	1784	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	1789	ERROR
The constant "MCRYPT_MODE_ECB" is deprecated since PHP 7.1 and removed since PHP 7.2	1789	ERROR
Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead	1794	ERROR

    Extension ‘mcrypt’ is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead 66 ERROR
    Extension ‘mcrypt’ is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead 109 ERROR
    The constant “MCRYPT_DEV_URANDOM” is deprecated since PHP 7.1 and removed since PHP 7.2 109 ERROR

    *******************************
    Other errors I received – any idea where/how to fix these?

    “$this” can no longer be unset since PHP 7.1.

    “$this” can no longer be used in a plain function or method since PHP 7.1. 94 ERROR

    Self-closing XHTML tags are ignored. Only non-self-closing tags should be used in the strip_tags() $allowable_tags parameter since PHP 5.3.4. Found: ‘<b><br><br/><i><small>’

    The page I need help with: [log in to see the link]

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