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<?php $a = array( 'one' => array('one' => 11, 'two' =>12), 'two' => array('one' => 21, 'two' => 22) ); $s = "one,two"; $res = $a; foreach(explode(",", $s) as $item){ $res = $res[$item]; } echo $res;
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
12

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155.91 ms | 407 KiB | 5 Q