PHP Associative Arrays
PHP associate array is used to access the elements with keys by “=>” symbol. There are two ways to create an associative array. 1st way:
$age = array("John"=>"20", "Helena"=>"30", "Rasmus"=>"29");
2nd way:
$age['john'] = "20";
$age['Helena'] = "30";
$age['Rasmus'] = "29";
Let us take an example:
Example1:
<!DOCTYPE html>
<html>
<head>
<title>PHP Tutorial</title>
</head>
<body>
<?php
$age = array("John"=>"20", "Helena"=>"30", "Rasmus"=>"29");
echo "Helena is " . $age['Helena'] . " years old.";
?>
</body>
</html>
Example2
<!DOCTYPE html>
<html>
<head>
<title>PHP Tutorial</title>
</head>
<body>
<?php
$age = array("John"=>"20", "Helena"=>"30", "Rasmus"=>"29");
// Traversing PHP Associative Array
foreach($age as $k => $v) {
echo "Key: ".$k." Value: ".$v."<br/>";
}
?>
</body>
</html>
Output
Key: John Value: 20
Key: Helena Value: 30
Key: Rasmus Value: 29