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<?php $b= array(1,2,3,4,5,6,7); $a = array(2,3,4); var_dump( ((count($a)-count($b)) > 0)?$a:$b );
Output for 4.3.0 - 7.1.0
array(7) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) [5]=> int(6) [6]=> int(7) }