www.v2ex.com-t-822937.php

<?php

$list = [];
for ($i = 0; $i < 10; $i++) {
    $obj = new \stdClass();
    $list[] = $obj;

    $obj->val = $i;
}
var_dump($list);
/*
php refforloop.php 
array(10) {
  [0]=>
  object(stdClass)#1 (1) {
    ["val"]=>
    int(0)
  }
  [1]=>
  object(stdClass)#2 (1) {
    ["val"]=>
    int(1)
  }
  [2]=>
  object(stdClass)#3 (1) {
    ["val"]=>
    int(2)
  }
  [3]=>
  object(stdClass)#4 (1) {
    ["val"]=>
    int(3)
  }
  [4]=>
  object(stdClass)#5 (1) {
    ["val"]=>
    int(4)
  }
  [5]=>
  object(stdClass)#6 (1) {
    ["val"]=>
    int(5)
  }
  [6]=>
  object(stdClass)#7 (1) {
    ["val"]=>
    int(6)
  }
  [7]=>
  object(stdClass)#8 (1) {
    ["val"]=>
    int(7)
  }
  [8]=>
  object(stdClass)#9 (1) {
    ["val"]=>
    int(8)
  }
  [9]=>
  object(stdClass)#10 (1) {
    ["val"]=>
    int(9)
  }
}

 */