Deprecation warnings with PHP 8.2

Thanks, @heikkiy. We can add mb_detect_encoding() to detect the source encoding

$source_encoding = mb_detect_encoding($plaintext, mb_detect_order(), true);
$plaintext_utf8= mb_convert_encoding($plaintext, 'UTF-8', $source_encoding);

Sounds good @silviaddweb. Added it.

Running the project through PHP Compatibility tests finds more deprecations. I tested the module with PHP 8.3 but the deprecations are old.

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FOUND 11 ERRORS AFFECTING 3 LINES
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 36 | ERROR | Function mcrypt_get_iv_size() is deprecated since PHP 7.1 and removed since PHP 7.2; Use OpenSSL instead
 36 | ERROR | Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead
 36 | ERROR | The constant "MCRYPT_RIJNDAEL_128" is deprecated since PHP 7.1 and removed since PHP 7.2
 36 | ERROR | The constant "MCRYPT_MODE_CBC" is deprecated since PHP 7.1 and removed since PHP 7.2
 37 | ERROR | Function mcrypt_create_iv() is deprecated since PHP 7.1 and removed since PHP 7.2; Use random_bytes() or OpenSSL instead
 37 | ERROR | Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead
 37 | ERROR | The constant "MCRYPT_RAND" is deprecated since PHP 7.1 and removed since PHP 7.2
 41 | ERROR | Function mcrypt_encrypt() is deprecated since PHP 7.1 and removed since PHP 7.2; Use OpenSSL instead
 41 | ERROR | Extension 'mcrypt' is deprecated since PHP 7.1 and removed since PHP 7.2; Use openssl (preferred) or pecl/mcrypt once available instead
 41 | ERROR | The constant "MCRYPT_RIJNDAEL_128" is deprecated since PHP 7.1 and removed since PHP 7.2
 41 | ERROR | The constant "MCRYPT_MODE_CBC" is deprecated since PHP 7.1 and removed since PHP 7.2
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thanks for the report. merged

Automatically closed - issue fixed for 2 weeks with no activity.