array_push()将一个值放入多个数组中

$one[] = $two[] = 'hello';

It works!

$value = 'hello';
array_push($one, $value);
array_push($two, $value);

[]

array_merge()

$one = array_merge($one, array(
   'a',
   'b',
   'c'
));

+ array operaror

$one += array(
   'a',
   'b',
   'c'
);

$value = 'hello';
$one[] = $value;
$two[] = $value;

$one[] = $two [] = "hello";