How to make references to external variables from an array? For example: if I change the array values ​​then these values ​​should be stored in variables referenced by array elements. I tried to implement this idea, but it didn't work :(

According to my idea:

1. echo $one should output 1

2. echo $two should output 2

   $one;
   $two;
   $link = [$first = &$one,  $second = &$two];
   $link[0] = 1;
   $link[1] = 2;
   echo $one;  // does not show 1 
   echo $two;  // does not show 2
   

CodePudding user response：

You should structure your code like so:

    $one;
    $two;
    //you did not initialize the $first and $second if you want them to be the keys like so
    //$link = [$first => &$one,  $second => &$two]; 
    $link = [&$one, &$two];
    //if you need to initialize them to another variable then do
    //$first = $link[0];
    //$second = $link[1];
    
    $link[0] = 1;
    $link[1] = 2;
    echo $one;  // show 1 
    echo $two;  // show 2