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@ 2013-04-25T18:03:03Z

<?php
$testSite = array(
    'name' => 'test site',
    'modules' => array(
        'foo' => 'true',
        'bar' => 'true'
    )
);
$testData = array(
    'modules' => array(
        'bar' => 'false'
    )
);

var_dump('before', $testSite);
$testSite = array_merge_recursive($testSite, $testData);
var_dump('after', $testSite);

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
array_merge_recursive: documentation ( source)

preferences:dark modelive preview

44.63 ms | 402 KiB | 5 Q