数组合并数值

Question

我有两个数组,

Array 1(
  'A' => string '13' (length=2)
  'B' => string '13' (length=2)
)

Array 2(
   9 => string '13' (length=2)
)

但是,当我用它array_merge来组合这些时arrays,它就像这样向我展示

Array(
   'A' => string '13' (length=2)
   'B' => string '13' (length=2) 
    0 => string '13' (length=2)
)

每当有数值时,array_merge它会自动递增,而不是原始值.

Answer 1

<?php
$a = array('A' => 13, 'B' => 13);
$b = array('9' => 13);

print_r($a+$b);
?>