PHP>如何将每个数组元素类型转换为字符串(递归)...？

Question

例如,如何转换以下数组:

$array1 = array("value1" => "20", "value2" => 40, array("value3" => 60));

至:

$array1 = array("value1" => "20", "value2" => "40", array("value3" => "60"));

Answer 1

array_walk_recursive($array, function (&$value) { $value = (string)$value; });