Question

How to cyclically rotate the elements of int array left by one in PHP

Answer 1

$arr = array(4, 7, 2, 9, 3);  
$arr_size = count($arr);

$first = $arr[0];
  
for ($i = 0; $i < $arr_size - 1; $i++) {
    $arr[$i] = $arr[$i + 1];
}

$arr[$arr_size - 1] = $first;
      
for ($i = 0; $i < $arr_size; $i++) {
    echo $arr[$i] . " ";
}
 
 
  
  
  
/*
run:
  
7 2 9 3 4 
  
*/

 

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