php一维数组合并

$arr1=['1','2','3'];
$arr2=['4',24,'6'];
$all=array_combine($arr1, $arr2);//数组合并函数
var_dump($all);

php中数组的几种合并方法：
 
array_merge(array1,array2):两个数组中的一维数据合并，二维数组如果key相同，array2中的值会替代array1中的值；
 
加号：array1+array2:把array2中key对应在array1不存在的key的值添加到array1中(像当于array1你有4个位置，则那4个位置的值不变，array2有5个位置，只把第5个位置的值加到array1中)
 
array_merge_recursive：与array_merge唯一不同的是，二维数据的值不会替换，是递归合并到一起；
 
$array1 = array(2,4,"color" => "red");
 
$array2 = array("a", "b", "color" => "green", "shape" => "trapezoid", 4);
 
$result = array_merge($array1, $array2);
 
echo "----------------array_merge---------------".PHP_EOL;
 
print_r($result);
 
echo "----------------+++++++++++---------------".PHP_EOL;
 
print_r($array1+$array2);
 
echo "----------------array_merge_recursive---------------".PHP_EOL;
 
print_r(array_merge_recursive($array1,$array2));
 
----------------array_merge---------------
 
Array
 
(
 
[0] => 2
 
[1] => 4
 
[color] => green
 
[2] => a
 
[3] => b
 
[shape] => trapezoid
 
[4] => 4
 
)
 
----------------+++++++++++---------------
 
Array
 
(
 
[0] => 2
 
[1] => 4
 
[color] => red
 
[shape] => trapezoid
 
[2] => 4
 
)
 
----------------array_merge_recursive---------------
 
Array
 
(
 
[0] => 2
 
[1] => 4
 
[color] => Array
 
(
 
[0] => red
 
[1] => green
 
)
 
[2] => a
 
[3] => b
 
[shape] => trapezoid
 
[4] => 4
 
)
 
$array1 = array('a','b');
 
$array2 = array(1,2);
 
$result = array_merge($array1, $array2);
 
echo "----------------array_merge---------------".PHP_EOL;
 
print_r($result);
 
echo "----------------+++++++++++---------------".PHP_EOL;
 
print_r($array1+$array2);
 
echo "----------------array_merge_recursive---------------".PHP_EOL;
 
print_r(array_merge_recursive($array1,$array2));
 
----------------array_merge---------------
 
Array
 
(
 
[0] => a
 
[1] => b
 
[2] => 1
 
[3] => 2
 
)
 
----------------+++++++++++---------------
 
Array
 
(
 
[0] => a
 
[1] => b
 
)
 
----------------array_merge_recursive---------------
 
Array
 
(
 
[0] => a
 
[1] => b
 
[2] => 1
 
[3] => 2
 
)