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  1. <?php
  2.  
  3. $calls = [
  4.     ['prefix' => '+57'],
  5.     ['prefix' => '+268'],
  6.     ['prefix' => '+972'],
  7.     ['prefix' => '+972'],
  8.     ['prefix' => '+33'],
  9.     ['prefix' => '+33'],
  10.     ['prefix' => '+972'],
  11.     ['prefix' => '+509'],
  12.     ['prefix' => ''],
  13.     ['prefix' => '+33'],
  14.     ['prefix' => '+268'],
  15.     ['prefix' => '+57'],
  16. ];
  17.  
  18.  
  19. $result = array_reduce($calls, myStatCounter, []);
  20.  
  21. print_r($result);
  22.  
  23. function myStatCounter($stat, $call) {
  24. 	$prefix = $call['prefix'];
  25. 	if (empty($stat[$prefix])) $stat[$prefix] = 0;
  26. 	$stat[$prefix]++;
  27. 	return $stat;
  28. }
  29.  
  30.  
Success #stdin #stdout #stderr 0.01s 82560KB
comments (?)
stdin 
Standard input is empty
stdout 
Array
(
    [+57] => 2
    [+268] => 2
    [+972] => 3
    [+33] => 3
    [+509] => 1
    [] => 1
)
stderr 
PHP Notice:  Use of undefined constant myStatCounter - assumed 'myStatCounter' in /home/oVEXWa/prog.php on line 19
https://ideone.com/tzCGJb
language:
PHP (php 7.3.5)
created:
5 years ago
visibility:
public

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