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  1. <?php
  2.  
  3. function cmp($a, $b)
  4. {
  5. 	var_dump($a, $b);
  6. 	echo PHP_EOL;
  7.  
  8.     if ($a == $b) {
  9.         return 0;
  10.     }
  11.  
  12.     return ($a < $b) ? -1 : 1;
  13. }
  14.  
  15. $a = array(3, 2, 5, 6, 1);
  16.  
  17. usort($a, "cmp");
  18.  
  19. foreach ($a as $key => $value) {
  20.     echo "$key: $value\n";
  21. }
  22.  
Success #stdin #stdout 0.01s 82880KB
comments (?)
stdin
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Standard input is empty
stdout
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int(3)
int(2)

int(5)
int(2)

int(3)
int(5)

int(5)
int(6)

int(6)
int(1)

int(5)
int(1)

int(3)
int(1)

int(2)
int(1)

0: 1
1: 2
2: 3
3: 5
4: 6
https://ideone.com/ubi7Aq
language:
PHP (php 7.3.5)
created:
6 years ago
visibility:
public

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