PHP Array(Index Array,Associative Array,Multidimensional Array)

PHP Array

PHP Array

What is Array

Arrays are complex variables that allow user to store multiple values or a group of values under a single variable name at a time.
Examples: suppose you want to store multiple books in an array. Storing the books in a variable could look something like this:

<?php
$books=array("Think and Grow Rich","Law of Attraction","The Power of Now");
//echo Result From array
echo $books['0'].' | ';
echo $books['1'].' | ';
echo $books['2'];
?>

Output:
Think and Grow Rich | Law of Attraction | The Powe of Now.

What is Array

There are three types of arrays in php.
1.Indexed array --> An array with a numeric key.
Note:In an indexed array the indexes are automatically assigned and start with 0
2.Associative array --> An array where each key has its own specific value.
3.Multidimensional array --> An array containing one or more arrays within itself.

1.Indexed Array

PHP Indexed Array

An indexed array stores each element with a numeric index.The indexes are automatically assigned and start with 0.
Examples 1:PHP Indexed array

<?php
$books=array("Think and Grow Rich","Law of Attraction","The Power of Now");
//echo Result From array
echo $books['0'].' | ';
echo $books['1'].' | ';
echo $books['2'];
?>

Output:
Think and Grow Rich | Law of Attraction | The Powe of Now.
Examples 2:Loop in Indexed Array:

<?php
$name=array("Anjan","Peter","David","Rakesh","Divya","Monpura");
//Counting Array Length
$count=count($name);
for($i=0;$i<$count;$i++){
 echo $name[$i].' | ';
}
 ?>

Output: Anjan | Peter | David | Rakesh | Divya | Monpura

Examples 3:Combine Multiple array as Table:

<?php
$name=array("Peter","David","Rock","Anjan");
$age=array("22","24","19","20");
$email=array("Peter@gmail.com","David@gmail.com","Rock@gmail.com","Anjan@gmail.com");
//Printing array as Table
?>
<table width="30%" cellspacing="0" border="1">
 <tr>
  <th>Name</th>
  <th>Age</th>
  <th>Email</th>
 </tr>
 <?php
 //counting total name
 $count=count($name);
  for($i=0;$i<$count;$i++){
 ?>
 <tr>
  <td><?php echo $name[$i];?></td>
  <td><?php echo $age[$i];?></td>
  <td><?php echo $email[$i];?></td>
 </tr>
 <?php }?>
</table>

Output:

Name	Age	Email
Peter	22	Peter@gmail.com
David	24	David@gmail.com
Rock	19	Rock@gmail.com
Anjan	20	Anjan@gmail.com

2.Associative array

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

Examples 1:Associative Array:

<?php
$user=array(
"name"=>"Anjan",
"age"=>"18",
"email"=>"Anjankumar@gmail.com"
 );
//Printing Value from array
echo 'Your name is: '.$user['name'].'||';
echo 'Your You are: '.$user['age'].'||';
echo 'Your Contact is: '.$user['email'];
?>

Output: Your name is: Anjan || You are : 18 Years Old || Your Contact is: Anjankumar@gmail.com

Examples 2:Loop in Associative Array:

<?php
$age = array(
 "Anjan Kumar"=>"20", 
 "Mr Ben"=>"37", 
 "Hrithik Rohsen"=>"43",
    "ALexandra Dardario"=>"32",
    "Mr Jack"=>"43",
    "Peter"=>"53",
 );
foreach ($age as $key => $value) {
 echo 'Your Name is: '.$key .' and Your are '. $value .' Years Old';
}
 ?>

Output: Your Name is: Anjan Kumar and Your are 20 Years Old Your Name is: Mr Ben and Your are 37 Years Old Your Name is: Hrithik Rohsen and Your are 43 Years Old Your Name is: ALexandra Dardario and Your are 32 Years Old Your Name is: Mr Jack and Your are 43 Years Old Your Name is: Peter and Your are 53 Years Old

Examples 3:Loop in Associative Array: Learn how to create Table in Associative Array.

<?php
$user=array(
 "Anjan Kumar"=>"Anjankumar@gmail.com",
 "Raj Kumar"=>"Rajkumar@gmail.com",
 "Bikash Kumar"=>"Bikashkumar@gmail.com"
 );
?>
   <table cellspacing="0" width="30%" border="1">
  <tr>
     <th>Name</th>
     <th>Email</th>
 </tr>
 <?php
 foreach ($user as $name => $contact) {
 ?>
 <tr>
  <td><?php echo $name;?></td>
  <td><?php echo $contact;?></td>
 </tr>
 <?php }
?>
   </table>

Output:

Name	Email
Anjan Kumar	Anjankumar@gmail.com
Raj Kumar	Rajkumar@gmail.com
Bikash Kumar	Bikashkumar@gmail.com

3.Multidimensional array

A multidimensional array is an array containing one or more arrays.In this lesson we will learn 2 Dimensional Array. A two-dimensional array is an array of arrays

Learn Multidimensional Arrays