An array of arrays is called multidimensional array. It is used to store the data in a tabular form. It is represented in the form of matrix (row*column).
Example:
We can store the data in the form of two dimensional arrays.
| Emp-id |
Name |
Salary |
| John |
20 |
30000 |
| Helena |
30 |
60000 |
| Rasmus |
29 |
40000 |
<!DOCTYPE html>
<html>
<head>
<title>PHP Tutorial</title>
</head>
<body>
<?php
$emp = array
(
array(1,"john",300000),
array(2,"Helena",60000),
array(3,"Rasmus",40000)
);
//traversal 2D elements of an array in the form of (row*column)
for ($row = 0; $row < 3; $row++) {
for ($col = 0; $col < 3; $col++) {
echo $emp[$row][$col]." ";
}
echo "<br/>";
}
?>
</body>
</html>
Output
1 john 300000
2 Helena 60000
3 Rasmus 40000
Example2
<!DOCTYPE html>
<html>
<head>
<title>PHP Tutorial</title>
</head>
<body>
<?php
error_reporting(1);
$emp=array(array("emp_id"=>1,"name"=>"John","mob"=>9143434323),
array("emp_id"=>2,"name"=>"Helena","mob"=>9134433235),
array("emp_id"=>3,"name"=>"Rasmus","mob"=>9133534323)
);
echo '<table border="3">';
echo '<tr>';
echo '<td align="center">Employee Id</td>';
echo '<td align="center">Employee Name</td>';
echo '<td align="center">Mobile no</td>';
foreach($emp as $k){
echo '<tr>';
foreach($k as $v){
echo '<td align="center">'.$v.'</td>';
}
echo '</tr>';
}
echo '</table>';
?>
</body>
</html>
Output
Example 3
<!DOCTYPE html>
<html>
<head>
<title>PHP Tutorial</title>
</head>
<body>
<form method="get">
Select Country:<select name="c">
<option value="ind">india</option>
<option value="pak">Pakistan</option>
<option value="ch">Australia</option>
</select>
<input type="submit" value="submit" name="display"/>
</form>
<?php
$country=array(
"ind"=>array("Andhra Pradesh","Arunachal Pradesh","Assam","Bihar","Rajastha"),
"pak"=>array("Islamabad","Lahore"),
"ch"=>array("Victoria","Queensland","SouthAustralia","WesternAustralia","New South Wales")
);
if(isset($_GET['display'])){
$get_country=$_GET['c'];
echo "<br>"."Select City ";
foreach($country as $country_key => $cname){
if($country_key==$get_country){
echo "<select>";
foreach($cname as $state){
echo "<option>".$state."</option>";
}
echo "</select>";
}
}
}
?>
</body>
</html>
Output
