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<?php $arr1=array("sss"=>"abc","sss1"=>"abc1"); $arr2=array("sss"=>"psqr","sss1"=>""); print_r(array_merge($arr1,$arr2));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [sss] => psqr [sss1] => )