php: create_function replacement            rev 12 nov 2022

  create_function is removed in php v.8.
  It is easy to replace with a similar Anonymous Function (Closure).

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sources:

  https://lindevs.com/function-create_function-has-been-removed-in-php-8-0/

  https://stackoverflow.com/questions/48161526/php-7-2-function-create-function-is-deprecated

  https://www.php.net/manual/en/functions.anonymous.php


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begin 12 nov 2022
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