Question

How to find the last character that is repeated in a string with PHP

Answer 1

function get_last_character_repeated($s) { 
    $len = strlen($s);
    $ch_idx = -1;
           
    for ($i = 0; $i < $len; $i++) { 
       for ($j = $i + 1; $j < $len; $j++) { 
            if ($s[$i] == $s[$j]) { 
                $ch_idx = $i;
                break;
            } 
        } 
    } 
    return $ch_idx; 
}  

$s = "abcdxypcbadom"; 
        
$i = get_last_character_repeated($s); 
       
if ($i == -1) {
    echo "Not found"; 
}
else {
     echo $s[$i];
}



    
/*
run:

d
         
*/

 

70+ SQL courses for beginners and professionals