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PHP Associative Array


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PHP Tutorial » PHP Associative Arrays

What is an associative array PHP?, How do I get associative array in PHP?

Associative arrays are arrays that use named keys that you assign to them.

There are two types to create an associative array:

$population = array("Madrid"=>"4146000", "Barcelona"=>"3712000", "Valencia"=>"2124000");

or

$population['Madrid'] = "4146000"
$population['Barcelona'] = "3712000"
$population['Valencia'] = "2124000"

copy and paste in the editor below, click "Execute" and notice the result

  <?php
$population['Madrid'] = "4146000";
$population['Barcelona'] = "3712000";
$population['Valencia'] = "2124000";
echo " The population of Barcelona is" . $population['Barcelona'] . "citizens.";
?>

 

Creating an associative array of mixed types

Associative arrays are used to store key value pairs.

Example (this is HTML - PHP editor, change text on this window)
<?php 
/* Creating an associative array of mixed types */
$my_arr["abc"] = 915;
$my_arr[107] = "mno";
$my_arr[12.36] = 121;
$my_arr["xyz"] = "Paris";
/* Looping through an array using foreach */
foreach ($my_arr as $key => $val){
echo $key."==>".$val."\n";
}
?>

 

Related subjects:
What is an array Convert array to string comma Array to comma separated

Tags: PHP Associative Arrays: to numeric, and indexed, push, to simple, tu string, get key, multidimensional, add element, key

 

Convert Associative Array To Multidimensional

To make rounded coners for we used CSS Style for .button { border: none; color: white; padding: 10px; text-align: center; text-decoration: none; display: inline-block; font-size: 14px; margin: 8px 4px; cursor: pointer; font-weight: bold;}

Example (this is HTML - PHP editor, change text on this window)

<?php
$a = ['ab' => 22, 'bc' => 12, 'cd' => 41, 'de' => 1102];

$a1 = array_keys($a);
$a2 = array_values($a);

$b = [];
for ($i=0; $i<count($a); $i++) {
array_push($b, [$a1[$i],$a2[$i]] );
}

print_r($b); //[['ab', 22], ['bc', 12], ['cd', 41], ['de', 1102]];

?>

 

PHP array associative add element

How do you add an element to the associative array?

Example (this is HTML - PHP editor, change text on this window)

<?php

// Existing array
$my_arr = array('zero' => 0, 'one' => 1, 'two' => 2, 'three' => 3);

// New element
$my_arr['four'] = 4;

// Final array
print_r($my_arr);

?>

 



PHP Associative Arrays: to numeric, and indexed, push, to simple, tu string, get key, multidimensional, add element, key
PHP Associative Array - php tutorial

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