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run code in 150+ php & hhvm versions
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<?php $data_array = array('root1' => array(1,2,3), 'root2' => array(3,4,5)); foreach ($data_array as $key => $value) { echo $key.'=>['; foreach ($value as $val) { echo $val.','; } echo ']'; }
Output for 4.3.0 - 7.1.0
root1=>[1,2,3,]root2=>[3,4,5,]