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；<?php

$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

)<?php

$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

)