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<?php $foo = array( 'a' => 1, 'b' => 0, 'c' => 0, ); asort($foo, SORT_NUMERIC); var_dump($foo);
Output for 4.3.0 - 7.2.0
array(3) { ["c"]=> int(0) ["b"]=> int(0) ["a"]=> int(1) }