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phps array merge recursive behaviour on integer keys using -'php,arrays,multidimensional-array'


phps array merge recursive behaviour on integer keys  using -'php,arrays,multidimensional-array'

Is there an approach for recursively merging arrays, in the same way as PHP's array_merge_recursive() function does, except that integer keys are treated the same as string keys?

(It's important for the process that the keys remain parse-able as integers.)

For example:

$a = array(
    'a' => array(1)
);
$b = array(
    'a' => array(2, 3)
);
var_dump(array_merge_recursive($a, $b));


Will merge the on the "a" key and output, as expected, the following:

array(1) {
    ["a"] => array(3) {
        [0] => int(1)
        [1] => int(2)
        [2] => int(3)
    }
}


However, when using integers for keys (even when as a string):

$a = array(
    '123' => array(1)
);
$b = array(
    '123' => array(2, 3)
);
var_dump(array_merge_recursive($a, $b));


array_merge_recursive() will return:

array(2) {
    [0] => array(3) {
        [0] => int(1)
    }
    [1] => array(2) {
        [0] => int(2)
        [1] => int(3)
    }
}


Instead of the much desired:

array(1) {
    ["123"] => array(3) {
        [0] => int(1)
        [1] => int(2)
        [2] => int(3)
    }
}


Thoughts?
    
asked Sep 7, 2015 by rajesh
0 votes
123 views



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