PHP Array: Indexed,Associative, Multidimensional

PHP Array: Indexed,Associative, Multidimensional

index associative multidimensional array in php; Through this tutorial, you will learn about PHP Indexed, Associative, Multidimensional array with examples.

PHP Array: Indexed,Associative, Multidimensional

Basically PHP array is a special type of variable in which is used to collect multiple data in it.

In other words, An array is a special types of variable, which can hold more than one value at a time.

Create a New Array in PHP

You can use the below syntax for creating a new array in PHP:

array();

In PHP, there are three types of arrays:

  • Indexed arrays – Arrays with a numeric index
  • Associative arrays – Arrays with named keys
  • Multidimensional arrays – Arrays containing one or more arrays

PHP Indexed Arrays

Here, we will create indexed arrays in PHP:

$lang = array("PHP", "PYTHON", "JAVASCRIPT");

Example of Indexed Arrays:

In the below example, we will create an indexed array named $lang. The $lang is contained three values.

<!DOCTYPE html>
<html>
<title>Indexed Arrays In PHP</title>
<head></head>
<body>
	<?php
	$lang = array("PHP", "PYTHON", "JAVASCRIPT");
	echo "I like " . $lang[0] . ", " . $lang[1] . " and " . $lang[2] . ".";
	?>
</body>
</html>

PHP Array Length:

PHP Count() function is used to calculate the length of the array. It will return the length of the array

<?php
$lang = array("PHP", "PYTHON", "JAVASCRIPT");
echo count($lang);
?>

Loop with Indexed Arrays In PHP

Here, you will learn, how you can use the for loop with an indexed array in PHP:

<!DOCTYPE html>
<html>
<title>Loop with Indexed Arrays In PHP</title>
<head></head>
<body>
   <?php
	$lang = array("PHP", "PYTHON", "JAVASCRIPT");
	$arrlen = count($lang);

	for($x = 0; $x < $arrlen; $x++) {
	    echo $lang[$x];
	    echo "<br>";
	}
	?>
</body>
</html>

PHP Associative Arrays

Associative Arrays in PHP. Associative arrays are used to store key value pairs.

$subjects = array("PHP"=>"50", "PYTHON"=>"55", "JAVASCRIPT"=>"45");

Example of Associative Arrays:

For example, to store the marks of the different subjects in an array, a numerically indexed array would not be the best choice.

<!DOCTYPE html>
<html>
<title>Associative Arrays In PHP</title>
<head></head>
<body>
	<?php
	$subjects = array("PHP"=>"50", "PYTHON"=>"55", "JAVASCRIPT"=>"45");
	echo "PHP => " . $subjects['PHP'] . "<br>";
	echo "PYTHON => " . $subjects['PYTHON'] . "<br>";
	echo "JAVASCRIPT => " . $subjects['JAVASCRIPT'] . "<br>";
	?>
</body>
</html>

For Loop with Associative Arrays In PHP

Here, you will learn, how you can use for loop with associative an array in PHP:

<!DOCTYPE html>
<html>
<title>For Loop with Associative Arrays In PHP</title>
<head></head>
<body>
	<?php
	$subjects = array("PHP"=>"50", "PYTHON"=>"55", "JAVASCRIPT"=>"45");

	foreach($subjects as $x => $sub_value) {
	    echo "Key=" . $x . ", Value=" . $sub_value;
	    echo "<br>";
	}
	?>
</body>
</html>

Multidimensional Arrays In PHP

In PHP, A multidimensional array is an array containing one or more arrays in it.

We will create a multidimensional array:

$cars = array
   (
   array("Volvo",22,18),
   array("BMW",15,13),
   array("Saab",5,2),
   array("Land Rover",17,15)
   );

Example of Multidimensional Arrays

<!DOCTYPE html>
<html>
<title>Multidimensional Arrays In PHP</title>
<head></head>
<body>
	<?php
	$cars = array
	  (
	  array("Volvo",22,18),
	  array("BMW",15,13),
	  array("Saab",5,2),
	  array("Land Rover",17,15)
	  );

	echo $cars[0][0].": In stock: ".$cars[0][1].", sold: ".$cars[0][2].".<br>";
	echo $cars[1][0].": In stock: ".$cars[1][1].", sold: ".$cars[1][2].".<br>";
	echo $cars[2][0].": In stock: ".$cars[2][1].", sold: ".$cars[2][2].".<br>";
	echo $cars[3][0].": In stock: ".$cars[3][1].", sold: ".$cars[3][2].".<br>";

	?>
</body>
</html>

For loop with Multidimensional Array in PHP:

<!DOCTYPE html>
<html>
<title>For Loop with Multidimensional Arrays In PHP</title>
<head></head>
<body>
	<?php
	$cars = array
	  (
	  array("Volvo",22,18),
	  array("BMW",15,13),
	  array("Saab",5,2),
	  array("Land Rover",17,15)
	  );
	for ($row = 0; $row < 4; $row++) {
	  echo "<p><b>Row number $row</b></p>";
	  echo "<ul>";
	  for ($col = 0; $col < 3; $col++) {
	    echo "<li>".$cars[$row][$col]."</li>";
	  }
	  echo "</ul>";
	}
	?>
</body>
</html>

Foreach Loop Through an Associative Array PHP

See the below example for foreach loop with an associative array in PHP

<html>
<head>
<title>Foreach Loop Through an Associative Array</title>
</head>
<body>
<?php
$character = array (name=>"Joe",
                    occupation=>"Programmer",
                    age=>30,
                    "Learned language "=>"Java"
);
foreach ( $character as $key=>$val ){
    print "$key = $val<br>";
}
?>
</body>
</html>

Foreach loop through multidimensional array in PHP

Foreach loop is mainly used for looping through array values. Here you will learn how you can use foreach loop with PHP arrays:

<!DOCTYPE html>
<html>
<title>For Loop with Multidimensional Arrays In PHP</title>
<head></head>
<body>
<?php
// Multidimensional array
$superheroes = array(
    "spider-man" => array(
        "name" => "Peter Parker",
        "email" => "[email protected]",
    ),
    "super-man" => array(
        "name" => "Clark Kent",
        "email" => "[email protected]",
    ),
    "iron-man" => array(
        "name" => "Harry Potter",
        "email" => "[email protected]",
    )
);
 
// Printing all the keys and values one by one
$keys = array_keys($superheroes);
for($i = 0; $i < count($superheroes); $i++) {
    echo $keys[$i] . "{<br>";
    foreach($superheroes[$keys[$i]] as $key => $value) {
        echo $key . " : " . $value . "<br>";
    }
    echo "}<br>";
}
?>

</body>
</html>

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AuthorAdmin

My name is Devendra Dode. I am a full-stack developer, entrepreneur, and owner of Tutsmake.com. I like writing tutorials and tips that can help other developers. I share tutorials of PHP, Python, Javascript, JQuery, Laravel, Livewire, Codeigniter, Node JS, Express JS, Vue JS, Angular JS, React Js, MySQL, MongoDB, REST APIs, Windows, Xampp, Linux, Ubuntu, Amazon AWS, Composer, SEO, WordPress, SSL and Bootstrap from a starting stage. As well as demo example.

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