<?php function my_func($my_var){ ... } $a = 20; my_func($a); echo $a; //здесь должно быть выведено 30

According to this part of the code, you need to finish it so that the function increases the value of $ my_var by 10. It is prohibited to use return in the function.

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1 answer 1

We use the reference:

 function my_func(&$my_var){ $my_var += 10; } $a = 20; my_func($a); echo $a;