遍历多维数组

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$arr_age = array("wang"=>18, "li"=>20, "zhang"=>array("name"=>"小张", "age"=>25));

foreach ($arr_age as $age) {

  if(is_array($age)){

    foreach ( $age as $detail) {

    echo $detail,'<br />';

    }

  } else {

    echo $age,'<br />';

  }

}