Question

How to swap two values of an array in PHP

Answer 1

function swap(&$x, &$y) {
    $tmp = $x;
    $x = $y;
    $y = $tmp;
}


$arr = array(99, 3, 7, 0, 2, 1, 8, 6);
        
swap($arr[0], $arr[4]);

for ($i = 0; $i < count($arr); $i++) {
    echo $arr[$i] . " ";
}






/*
run:

2 3 7 0 99 1 8 6 

*/

 

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