Question

How to find the length (rows, cols) of 2D array in PHP

Answer 1

function print_array($arr2d)
{
    echo '<table border="0" cellspacing="3">';
    $rows = count($arr2d);
    for ($i = 0; $i < $rows; $i++)
    {
        echo "<tr align='right'>";
        $cols = count($arr2d[$i]);
        for ($j = 0; $j < $cols; $j++)
            echo "<td>" . $arr2d[$i][$j] . "</td>";
        echo "</tr>";
    }
    echo "</table>";
}
  
$a = array(array(1, 8, 5, 9),
           array(6, 7, 1, 5),
);
  
echo "total rows = " . count($a) . "<br />";    
for ($i = 0; $i < count($a); $i++)    
     echo "row = " . $i . " cols = " . count($a[$i]) . "<br />";   
     
print_array($a);
 
     
/*
run:
 
total rows = 2
row = 0 cols = 4
row = 1 cols = 4
1    8    5    9
6    7    1    5
      
*/

 

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