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144.71 ms | 1399 KiB | 7 Q<?php
$arr = array(100, 200);
var_dump($arr);
/* shows:
array(2) {
[0]=>
int(100)
[1]=>
int(200)
}
*/
$r = &$arr[0];
var_dump($arr);
/* shows:
array(2) {
[0]=>
&int(100)
[1]=>
int(200)
}