Accessing array elements within an array in php
Multidimensional arrays often contains arrays within arrays instead of single matrix elements form. We can access inside elements in 2 dimensional form as :
Example
<!DOCTYPE html>
<html>
<head>
<title>Accessing array elements within an array</title>
</head>
<body>
<?php
$marks = array(
"Person1" => array
(
"physics" => 35,
"maths" => 30,
"chemistry" => 39
),
"Person2" => array
(
"physics" => 30,
"maths" => 32,
"chemistry" => 29
),
"Person3" => array
(
"physics" => 31,
"maths" => 22,
"chemistry" => 39
)
);
/* Accessing multi-dimensional array values */
echo "Marks for person 1 in physics is : " . $marks['Person1']['physics'] . "<br>";
echo "Marks for person 3 in chemistry is : " . $marks['Person3']['chemistry'] . "<br>";
// ITERATING ALL IN A FOREACH LOOP
foreach($marks as $sub_array) {
echo $sub_array['physics'] ." ". $sub_array['maths'] . " " . $sub_array['chemistry'] . "<br>";
}
?>
</body>
</html>
Output
Marks for person 1 in physics is : 35
Marks for person 3 in chemistry is : 39
35 30 39
30 32 29
31 22 39
