PHP Tutorial
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PHP Functions
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PHP Arrays
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PHP Include
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PHP OOPs Concepts
- OOPs Concepts
- OOPs Abstract Class
- OOPs Abstraction
- OOPs Access Specifiers
- OOPs Const Keyword
- OOPs Constructor and destructor
- Encapsulation
- Final Keyword
- OOPs Functions
- OOPs Inheritance
- OOPs Interface
- OOPs Overloading
- OOPs Type Hinting
PHP MySQLi
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PHP Topics
- Compound Types
- is_null() Function
- Special Types
- Inheritance Task
- Special Types
- MVC Architecture
- PHP vs. JavaScript
- PHP vs. HTML
- PHP vs. Node.js
- PHP vs Python
- PHP PDO
- Top 10 PHP frameworks
- phpMyAdmin
- Count All Array Elements
- Create Newline
- Get Current Page URL
PHP Mail
There are 2 compound data types in PHP.
- Array
- Object
Array:
The array is a collection of heterogeneous (dissimilar) data types. PHP is a loosely typed language that?s why we can store any type of values in arrays.
Normal variable can store single value, array can store multiple values.
The array contains a number of elements, and each element is a combination of element key and element value.
SYNTAX OF ARRAY DECLARATION:
- Variable_name = array (element1, element2, element3, element4……)
Example 1
<?php
$arr= array(10,20,30);
print_r($arr);
?>
output
Array([0] => 10[1] =>20[2] => 30)
Example 2
<?php
$arr= array(10,'sonoo',30);
print_r($arr);
?>
output
Array([0] => 10[2] => sonoo[3] => 30)
Example 3
<?php
$arr= array(0=>10,2=>'sonoo',3=>30);
print_r($arr);
?>
output
Array([0] => 10[2] => sonoo[3] => 30)
Object:
An object is a data type which accumulates data and information on how to process that data. An object is a specific instance of a class which delivers as templates for objects.
SYNTAX:
At first, we must declare a class of object. A class is a structure which consists of properties and methods. Classes are specified with the class keyword. We specify the data type in the object class, and then we use the data type in instances of that class.
Example 1
<?php class vehicle
{
function car()
{
echo "Display bmw motors";
}
}
$obj1 = new vehicle;
$obj1->car();
?>
output
Display bmw motors
Example 2
<?php
class student
{
function student()
{
$this->kundan = 100;
}
}
$obj = new student();
echo $obj->kundan;
?>
output
100
Example 3
<?php
class greeting
{
public $str = "Hello javatpoint and SSSIT";
function show_greeting()
{
return $this->str;
}
}
$obj = new greeting;
var_dump($obj);
?>
output
object(greeting([1]
public ‘str’ => string ‘Hello protutorials and tech’ (length=27)