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<?php
 
$arr = array(0, -9223372036854775809, 9223372036854775808);
 
usort($arr, function($i, $j) { return $i - $j; });
 
var_dump($arr);
 
?>

Success #stdin #stdout 0.01s 20568KB

stdin

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Standard input is empty

stdout

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array(3) {
  [0]=>
  float(9.2233720368548E+18)
  [1]=>
  float(-9.2233720368548E+18)
  [2]=>
  int(0)
}

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