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Php 95
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Java 94
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Javascript 37
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Regex 18
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Git 17
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Security 16
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Docker 07
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Python 58
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Machine Learning 14
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Book Highlights
Php
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Variables
- 1 Basics 5
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Quotes S
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Constants S
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Control structures S
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Reference S
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Number systems S
- 2 Variables 4
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Definition S
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Variable variable S
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Exists S
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Type casting S
- 3 Operators 5
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Aritmetic S
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Bitwise S
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String S
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Comparison S
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Logical S
- 4 Function 4
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Definition S
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Anonymous S
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Reference S
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Variable arguments S
- 5 Array 7
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Basics S
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Operations S
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Create S
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Search S
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Modify S
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Sort S
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Storage S
- 6 String 9
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Basics
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Compare
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Search
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Replace
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Format
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Regexp
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Parse
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Formating
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Json
- 7 Streams 6
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File open
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Read file
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Read csv
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File contents
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Context
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Ob_start
- 8 Oop 6
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Object instantiation S
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Class constructor
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Interfaces, abstract
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Resource visibility
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Class constants
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Namespaces
- 9 Features 9
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Autoload
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Class reflection
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Magic methods
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Exceptions S
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Late static binding
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Type hinting
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SPL
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PHPUNIT
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PHAR
- 10 Versions 2
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Php7.4 S
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Php8.0 S
- 11 Http 4
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Headers
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File Uploads
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Cookies
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Sessions
- 12 Design Patterns 4
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Singleton Pattern S
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Observer Pattern
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Strategy Pattern
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Registry
- 13 Modern Php 8
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Composer S
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Slim Framework
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Autoloader
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Package
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Releases
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Generators
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Dependency Injection
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Middleware
- 14 Create Framework 7
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App
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Http Foundation
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Front Controller
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Routing
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Render Controller
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Resolver
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SoC
- 15 Frameworks 4
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Symfony v5
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Laravel v8
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Laminas v3
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Codeigniter v4
- 16 Composer 5
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Guzzle
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Carbon
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Faker
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Math
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Requests
- 17 Symfony 6
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Routes S
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Annotations
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Flex
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Controllers
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Doctrine
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Templating
S
R
Q
Php Variables Type Casting
Desire type written in parentheses stdClass() is the default PHP object $B = (obj) ['a' => 1]; echo $B->a; //1
Parentheses
Type casting in PHP works much as it does in C.
/**
* The name of the desired type is written ...
* in parentheses before the variable.
*/
$A = array(1, 2, 3);
$B = (string) $A;
var_dump($A); // array(3) { ... }
var_dump($B); // string(5) "Array"
Object
You can call an array item like object property if you type cast array to object.
/**
* Array to Object type casting
*/
$A = array('senderId' => 10);
$B = (object) $A;
echo $B->senderId; // 10
stdClass
In PHP the default object is of stdClass type.
/**
* stdClass()
*
* Is the default PHP object
* Has no properties, methods or parent
*
* When you cast an array as Object,
* you get an instance of stdClass
*/
$A = (object) array(); // OR
$A = new stdClass();
$B = (object) [1, 2];
$B->x = "3";
$B->y = "4";
print_r($B); // stdClass Object( 0=>1, 1=>2, x=>3, y=>4)
➥ Questions
Last update: 26 days ago