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<?php function func($a) { // void(); } $a['one'] = 1; func($a['two']); var_dump($a); ?>
Output for 5.3.0 - 7.2.0
Notice: Undefined index: two in /in/MRE7M on line 8 array(1) { ["one"]=> int(1) }
Output for 4.3.0 - 5.2.17
Notice: Undefined index: two in /in/MRE7M on line 8 array(1) { ["one"]=> int(1) }