Php数组元素差异[重复]

Question

This question already has an answer here:

• PHP subtract array values 3 answers

There two arrays:

Array1 ( 
[309] => "100"
[310] => "200"
[311] => "400"
)

Array2 ( 
[309] => "1"
[310] => "2"
[311] => "4"
) 

How to get resulted array with difference of elements from arrays? i.e:

Array3 ( 
    [309] => "99"
    [310] => "198"
    [311] => "396"
    ) 

Thanks!

</div>

Answer 1

<?php

$arr1 = array(309=>"100",310=>"200",311=>"400");
$arr2 = array(309=>"1",310=>"2",311=>"4");

$out = array();
foreach($arr1 as $k => $v){
    // Since you need quote so, otherwise no need
    $out[$k] = '"'.($v - $arr2[$k]).'"';
}
print_r($out);

?>

Output :

Array
(
    [309] => "99"
    [310] => "198"
    [311] => "396"
)