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run code in 150+ php & hhvm versions
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<?php $a = array( 'a', 'b'); $b = array( 'b', 'a' ); var_dump( array_intersect_assoc( $a, $b ) );
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(0) { }