How to work with PHP array

how to work with multidimensional array in php

If you are programmer then you dont need introduction of array. In every language array is the most important part.

how to work with multidimensional array in php

Using array we can achieve so many things and array is useful for so many times when we do programming.
In this article I am going to share some method about PHP array.

What is PHP array?
An array in PHP is actually an ordered map. A map is a type that associates values to keys. This type is optimized for several different uses; it can be treated as an array, list (vector), hash table (an implementation of a map), dictionary, collection, stack, queue, and probably more. As array values can be other arrays, trees and multidimensional arrays are also possible.

Following is syntax
array(key => value)

Creating PHP array:

<?php
$arr = array("str_arr" => "this is string", 25 => true);

echo $arr["str_arr"]; // print this is string
echo $arr[25];&nbsp;&nbsp;&nbsp; // print ture
?>

How to print direct PHP array.

<?php
$arr=array("a"=>"jimi","b"=>"timi","c"=>"limi");
print_r($arr);
?>

How to print PHP array preformated

<?php
$arr=array("a"=>"jimi","b"=>"timi","c"=>"limi");
print_r("<pre>".$arr);
?>

How to create a two-dimensional PHP array

<?php
$arr = array (
 "fruits"&nbsp; => array("a" => "orange", "b" => "banana", "c" => "apple"),
 "numbers" => array(1, 2, 3, 4, 5, 6),
 "holes"&nbsp;&nbsp; => array("first", 5 => "second", "third")
);
print_r("<pre>".$arr);
?>

How to create an array from MySql table

<?
function cre_array($row) {
 foreach($row as $key => $value) {
 global $$key;
 $$key = $value;
 }
}

//User table has first_name field present.

$sql = mysql_query("SELECT * FROM 'users'");
while ($row = mysql_fetch_assoc($sql)) {
 cre_array($row);
 echo $first_name.'<br>'; //instead of $row['first_name']
}

?>

How to count PHP array count

$fruits = array("a" => "orange", "b" => "banana", "c" => "apple");
echo sizeof($fruits);
echo $arrayLength = count($fruits);

PHP and MySql and Array

<?php
$sql = "SELECT key,value FROM table";
$result = mysql_query($sql);
while($row = mysql_fetch_row($result)) {
$myArray[$row[0]] = $row[1];
}

while(list($key,$value) = each($myArray)) {
echo "$key : $value";
}
?>

Following image will help you to understand two dimensional array.

How to work with PHP array
How to work with PHP array

Published by

Purab

I am Purab from India, Software development is my profession and teaching is my passion. Programmers blog dedicated to the JAVA, PHP, DevOps technologies and Opensource Frameworks. Youtube Chanel PurabTech Connect to on LinkedIn or Follow @purab on Twitter or Write Mail to purabdk@gmail.com

3 thoughts on “how to work with multidimensional array in php”

  1. Thanks for this article on arrays. I have a question about WordPress and arrays. Here’s my situation. I have a custom post type called “property” and a custom field called “prop_state”. The prop_state contains a US state word like “Ohio”, “Illinois”, etc. I want to build an array that looks in the “property” post type and see what states are in the database and then give me a count of each state. For instance “There are 11 properties in Illinois”. Can you point me down the right road? I would appreciate any feedback you can lend.

  2. I do not even know how I ended up here, however I assumed this put
    up was great. I do not understand who you are however definitely you are going
    to a famous blogger when you are not already. Cheers!

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