PHP 数组合并的几种方式

// 重置数组元素的键名(从0开始的索引数组)
$array = array_merage($array);

$arr1 = [1, 'one' => '张三'];
$arr2 = [10, 'one' => '李四'];
$array = array_merge($arr1, $arr2);
var_dump($arr1, $arr2, $array);// [1, 'one' => '张三', 10]

$arr1 = [1, 'one' => '张三'];
$arr2 = [10, 'one' => '李四'];
var_dump($arr1 + $arr2);// [1, 'one' => '张三']