php. How to count separately the number of columns and rows of a two-dimensional array?

Question

PHP

There is a filled array.
since the array is small, I can record the number of rows and columns myself. It is interesting to know how to tell the program to count the elements separately for rows and columns (instead of rows, columns in the loop).

$arr =array($ar1=array("рр","ыы","ыаы",20,"ыаы",2),
                   $ar2=array("ыпв","ып","вп",9,"впрр",4),
                   $ar3=array( "вр","вр","вр",30,"вр",5),
                       $ar4=array("врар","ароа","аоао",50,"ааоао",12));


          $rows=4;
          $columns=6;
          for($i=0;$i<$rows;$i++)
          {
            for($j=0;$j<$columns;$j++)
                {

Answer 1

$arr = [
        ["рр","ыы","ыаы",20,"ыаы",2],
        ["ыпв","ып","вп",9,"впрр",4],
        [ "вр","вр","вр",30,"вр",5],
        ["врар","ароа","аоао",50,"ааоао",12]
    ];


    for($i = 0; $i < count($arr); $i++)
    {
        for($j = 0; $j < count($arr[$i]); $j++)
        {
        }
    }

Answer 2

You can simply calculate the number like this:

$count = 0;
$data = [
    ['a', 'b', 'c'],
    ['d', 'd', 'e'],
    ['f', 'h', 'j']
];

foreach ($data as $datum) {
    $count += count($datum);
}