How to determine the dimensions of an array in php

php method to determine how many dimensions an array is: first create a PHP sample file; then define a getmaxdim method; then determine how many dimensions the array is through foreach loop traversal; finally output the judgment result through echo. .

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The custom function used here can determine whether the array is one-dimensional , or two-dimensional, or several-dimensional array:

function getmaxdim($vDim)
{
  if(!is_array($vDim)) return 0;
  else
  {
    $max1 = 0;
    foreach($vDim as $item1)
    {
     $t1 = $this->getmaxdim($item1);
     if( $t1 > $max1) $max1 = $t1;
    }
    return $max1 + 1;
  }
}

It can be used after verification:

//测试：
$arr=array('yiyi'=>1212,'haha'=>array('heihei'=>array(array("a")),"b"));
echo getmaxdim($arr);
//结果： 4

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