CODEWITHSUNDEEP
phparraysmergearray-merge
IgorAlves
IgorAlves

Reputation: 5560

PHP - How to properly merge 2 arrays multi level in this example?

I have the follow array:

$arrIni["ENV"]="US";   
$arrIni["sap_db_server"] = "192.xxx.x.xx";

$arrIni["local_db_server"] = "localhost";
$arrIni["local_db_username"] = "root";

//Default settings
$arrIni["arrEnvSettings"]["UserTypeID"]=4;       
$arrIni["arrEnvSettings"]["LocalizationID"]=1;
$arrIni["arrEnvSettings"]["LangLabels"] = array();
$arrIni["arrEnvSettings"]["pages"]["st1"]="st1.php";
$arrIni["arrEnvSettings"]["pages"]["st2"]="st2.php";
$arrIni["arrEnvSettings"]["pages"]["st3"]="st3.php";

And I want to merge with this one:

$setParam["arrEnvSettings"]["pages"]["st3"]="st3_V2.php";

This is what I am doing:

echo "<pre>";
    print_r(array_merge($arrIni,$setParam));
echo "</pre>";

And this is what I am getting:

Array
(
    [ENV] => US
    [sap_db_server] => 192.xxx.x.xx
    [local_db_server] => localhost
    [local_db_username] => root
    [arrEnvSettings] => Array
        (
            [pages] => Array
                (
                    [st3] => st3_V2.php
                )

        )

)

In the php doc about merge, this is the comment " ...If the input arrays have the same string keys, then the later value for that key will overwrite the previous one. ..."

So in this way, I suppose to get this output instead of the last one:

Array
(
    [ENV] => US
    [sap_db_server] => 192.xxx.x.xx
    [local_db_server] => localhost
    [local_db_username] => root
    [arrEnvSettings] => Array
        (
            [UserTypeID] => 4
            [LocalizationID] => 1
            [LangLabels] => Array
                (
                )

            [pages] => Array
                (
                    [st1] => st1.php
                    [st2] => st2.php
                    [st3] => st3_V2.php
                )

        )

)

I do not understand why $setParam["arrEnvSettings"]["pages"]["st3"] is overriding the entire $arrIni["arrEnvSettings"].

Note:

If I use array_merge_recursive($arrIni,$setParam)) I will have the follow result but it is not what I want.

Array
(
    [ENV] => US
    [sap_db_server] => 192.xxx.x.xx
    [local_db_server] => localhost
    [local_db_username] => root
    [arrEnvSettings] => Array
        (
            [UserTypeID] => 4
            [LocalizationID] => 1
            [LangLabels] => Array
                (
                )

            [pages] => Array
                (
                    [st1] => st1.php
                    [st2] => st2.php
                    [st3] => Array
                        (
                            [0] => st3.php
                            [1] => st3_V2.php
                        )

                )

        )

)

Is there a way to do this without iterate over the array? Only using merging? What am I doing wrong?

Upvotes: 0

Views: 199

Answers (3)

coolstoner
coolstoner

Reputation: 799

what you need is array_replace_recursive

print_r(array_replace_recursive($arrIni,$setParam));

didnt see the submitted answer..Felippe Duarte has given it already.....

Upvotes: 0

David
David

Reputation: 466

If you want to merge a given value, use this:

$arrIni["arrEnvSettings"]["pages"]["st3"] = $setParam["arrEnvSettings"]["pages"]["st3"];

But the way you're doing it is merging two arrays, not simply setting the value within an array. There's a gigantic difference between those two methods.

Otherwise, yes you will need to iteratively merge the arrays.

Upvotes: 0

Felippe Duarte
Felippe Duarte

Reputation: 15131

This should do the trick:

array_replace_recursive($arrIni,$setParam);

Upvotes: 4

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