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<?php $arr= [ ["test1"=>["a"=>"1"]], ["test2"=>["b"=>"2"]], ["test3"=>["c"=>"3"]], ["test4"=>["d"=>"4"]], ]; $b = call_user_func_array("array_merge",$arr); print_r($b);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [test1] => Array ( [a] => 1 ) [test2] => Array ( [b] => 2 ) [test3] => Array ( [c] => 3 ) [test4] => Array ( [d] => 4 ) )

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