Change all keys in an array to uppercase:

SUBMITTED BY: henry1874w

DATE: June 22, 2017, 12:04 a.m.

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SIZE: 281 Bytes

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  1. <?php
  2. $age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
  3. print_r(array_change_key_case($age,CASE_UPPER));
  4. ?>
  7. inja
  9. Change all keys in an array to lowercase:
  11. <?php
  12. $age=array("Peter"=>"35","Ben"=>"37","Joe"=>"43");
  13. print_r(array_change_key_case($age,CASE_LOWER));
  14. ?>
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