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<?php $a = array ('title' => 'Header', 'text' => 'input'); $a2 = array('title' => 'Theme'); var_dump(array_merge($a, $a2));
based on cu1rQ
Output for 4.3.0 - 7.2.0
array(2) { ["title"]=> string(5) "Theme" ["text"]=> string(5) "input" }