This is a Javascript version of the PHP function: array_merge_recursive.

PHP array_merge_recursive

Description

array_merge_recursive - Merge two or more arrays recursively

array array_merge_recursive( array array1 [, array ...] )

If the input arrays have the same string keys, then the values for these keys are merged together into an array, and this is done recursively, so that if one of the values is an array itself, the function will merge it with a corresponding entry in another array too. If, however, the arrays have the same numeric key, the later value will not overwrite the original value, but will be appended.

Parameters

• array1

  Initial array to merge.

• array

  Variable list of arrays to recursively merge.

Return Values

An array of values resulted from merging the arguments together.

See Also

• javascript array_merge()

Javascript array_merge_recursive

Source

This is the main source of the Javascript version of PHP's array_merge_recursive

function array_merge_recursive (arr1, arr2){
    // http://kevin.vanzonneveld.net
    // +   original by: Subhasis Deb
    // -    depends on: array_merge
    // *     example 1: arr1 = {'color': {'favourite': 'read'}, 0: 5}
    // *     example 1: arr2 = {0: 10, 'color': {'favorite': 'green', 0: 'blue'}}
    // *     example 1: array_merge_recursive(arr1, arr2)
    // *     returns 1: {'color': {'favorite': {0: 'red', 1: 'green'}, 0: 'blue'}, 1: 5, 1: 10}
 
    if ((arr1 && (arr1 instanceof Array)) && (arr2 && (arr2 instanceof Array))) {
        for (var idx in arr2) {
            arr1.push(arr2[idx]);
        }
    } else if ((arr1 && (arr1 instanceof Object)) && (arr2 && (arr2 instanceof Object))) {
        for (var idx in arr2) {
            if (idx in arr1) {
                if (typeof arr1[idx] == 'object' && typeof arr2 == 'object') {
                    arr1[idx] = array_merge(arr1[idx], arr2[idx]);
                } else {
                    arr1[idx] = arr2[idx];
                }
            } else {
                arr1[idx] = arr2[idx];
            }
        }
    }
    
    return arr1;
}

To run the Javascript array_merge_recursive, you will also need the following dependencies:

• array_merge

Examples

Currently there is 1 example

Example 1

array_merge_recursive(arr1, arr2)

{'color': {'favorite': {0: 'red', 1: 'green'}, 0: 'blue'}, 1: 5, 1: 10}

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Credits

Respect & awards go to everybody who has contributed in some way so far:

	Onno Marsman for contributing to:
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	Brett Zamir for contributing to:
	array_fill_keys, array_fill_keys, array_filter, array_merge, array_slice, array_splice, class_exists, method_exists, property_exists, call_user_func, call_user_func_array, func_get_arg, func_get_args, func_num_args, get_defined_functions, get_defined_functions, die, exit, str_split, strspn, get_defined_vars
	Michael White (link) for contributing to:
	array_count_values, get_included_files, include, include_once, require, require_once, md5, number_format, parse_str, printf, sha1, sprintf, str_pad, strnatcmp, http_build_query, floatval, is_object, print_r
	Paulo Ricardo F. Santos for contributing to:
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	Waldo Malqui Silva for contributing to:
	array_fill, array_pad, array_product, array_rand, compact, count, range, abs, defined, ip2long, long2ip, implode, strcmp, ucwords
	Jack for contributing to:
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Contributing is as easy as adding a comment with better code, or code for a new function.
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Coming Project features

Project features that we are currently working on:

• Site. A place for php.js of it's own. You can track our lame attempts at phpjs.org. If there are any CakePHP developers out there who would like to help out, please contact me.
• Compile. Compile your own php.js version, with only the functions you need. Should generate a hash with which you can retrieve latest versions of your php.js combination.
• docBlock. Move to docBlock comments for improved compatibility with IDEs.
• Done - Testsuite. A better test-suite that can be ran locally so developers can easily test before commiting. Also the testing itself should be more thorough.
• Done - Versioning. Individual functions are versioned, but the entire library should be versioned as well.