APCU cache delete item + php code example

Example 1: clear array php

//To clear array you are able to simply re-instantiate it
$foo = array();

//To clear $foo from the symbol table use
unset($foo);

Example 2: clean function in php

/*** clean FUNCTION IN PHP
PHP provides functions that help to clean up strings by removing
unwanted whitespace or other characters from the beginning and/or
end of the string: trim , rtrim , and ltrim.
***/

Example
clean($request->description)
  
/*** strip_tags FUNCTION IN PHP
PHP also provides another type of cleanup function: strip_tags
which removes HTML and PHP tags from strings.
***/