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<?php function returnArray() { return array(591=>1,12354=>2,12=>45); } $foo = array(434=>99,2354=>98); $foo = array_merge($foo,returnArray()); var_dump($foo);
Output for 4.3.0 - 7.2.0
array(5) { [0]=> int(99) [1]=> int(98) [2]=> int(1) [3]=> int(2) [4]=> int(45) }