如何在php中打印多级数组索引

Question

I have the following array:

$array=array("string",array(1,2,3),true,"php");

and I want to print indexes like:

0=>string


1.0=>1


1.1=>2


1.2=>3


2=>true


3=>php

Answer 1

<?php

$array=array("string",array(1,2,3),true,"php");

foreach($array as $key=>$value)
{
  if(is_array($value))
  {
    foreach($value as $childkey=>$childvalue)
    {
      echo $key . "." . $childkey . "=>" . $childvalue . "
";
    }
  }
  elseif(is_bool($value))
  {
    echo $key . "=>" . ($value ? "true" : "false") . "
";
  }
  else
  {
    echo $key . "=>" . $value . "
";
  }
}

Output:

0=>string
1.0=>1
1.1=>2
1.2=>3
2=>true
3=>php