[removed in PHP 9.0] Function strftime() is deprecated since PHP 8.1

[jofranz]

FILE: de.systopia.stoken/CRM/Stoken/DateTokens.php

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FOUND 0 ERRORS AND 11 WARNINGS AFFECTING 11 LINES
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 57 | WARNING | Function strftime() is deprecated since PHP 8.1; Use date() or IntlDateFormatter::format() instead
 58 | WARNING | Function strftime() is deprecated since PHP 8.1; Use date() or IntlDateFormatter::format() instead
 62 | WARNING | Function strftime() is deprecated since PHP 8.1; Use date() or IntlDateFormatter::format() instead
 63 | WARNING | Function strftime() is deprecated since PHP 8.1; Use date() or IntlDateFormatter::format() instead
 67 | WARNING | Function strftime() is deprecated since PHP 8.1; Use date() or IntlDateFormatter::format() instead
 68 | WARNING | Function strftime() is deprecated since PHP 8.1; Use date() or IntlDateFormatter::format() instead
 69 | WARNING | Function strftime() is deprecated since PHP 8.1; Use date() or IntlDateFormatter::format() instead
 73 | WARNING | Function strftime() is deprecated since PHP 8.1; Use date() or IntlDateFormatter::format() instead
 74 | WARNING | Function strftime() is deprecated since PHP 8.1; Use date() or IntlDateFormatter::format() instead
 75 | WARNING | Function strftime() is deprecated since PHP 8.1; Use date() or IntlDateFormatter::format() instead
 76 | WARNING | Function strftime() is deprecated since PHP 8.1; Use date() or IntlDateFormatter::format() instead
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[jofranz]

Using strftime / gmstrftime functions result in a deprecation notice in PHP 8.1 and later. These functions will be removed in PHP 9.0.

https://php.watch/versions/8.1/strftime-gmstrftime-deprecated#replacements