Online PHP editor | refs for sdBRo

@ 2019-03-04T07:58:10Z

<?php
/* Function to reverse  
$arr from start to end*/
function reverseArray(&$arr, $start,  
                       $end) 
{ 
    while ($start < $end) 
    { 
        [$arr[$start],$arr[$end]] = [$arr[$end],$arr[$start]];

        $start++; 
        $end--; 
    }  
}      

$a = [1,2,3,4];
reverseArray($a,0,count($a)-1);
print_r($a);