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Variable data type in php

Содержание
  1. Variable data type in php
  2. PHP Advance
  3. PHP Array Functions
  4. PHP Calendar Functions
  5. PHP Date/Time Functions
  6. PHP Directory Functions
  7. PHP Error
  8. PHP Filesystem Functions
  9. PHP FTP Functions
  10. PHP JASON
  11. PHP Math Functions
  12. PHP GMP Functions
  13. PHP MySQLi Functions
  14. PHP String Functions
  15. PHP Network Functions
  16. PHP IntlChar Functions
  17. PHP Image Processing and GD Functions
  18. PHP Gmagick Functions
  19. PHP Imagick Functions
  20. PHP ImagickDraw Functions
  21. PHP DsDeque Functions
  22. PHP DsMap Functions
  23. PHP DSSequence Functions
  24. PHP DSVector Functions
  25. PHP DsStack Functions
  26. PHP DsQueue Functions
  27. PHP DsPriorityQueue Functions
  28. PHP SPL Data structures
  29. PHP Advance
  30. PHP Array Functions
  31. PHP Calendar Functions
  32. PHP Date/Time Functions
  33. PHP Directory Functions
  34. PHP Error
  35. PHP Filesystem Functions
  36. PHP FTP Functions
  37. PHP JASON
  38. PHP Math Functions
  39. PHP GMP Functions
  40. PHP MySQLi Functions
  41. PHP String Functions
  42. PHP Network Functions
  43. PHP IntlChar Functions
  44. PHP Image Processing and GD Functions
  45. PHP Gmagick Functions
  46. PHP Imagick Functions
  47. PHP ImagickDraw Functions
  48. PHP DsDeque Functions
  49. PHP DsMap Functions
  50. PHP DSSequence Functions
  51. PHP DSVector Functions
  52. PHP DsStack Functions
  53. PHP DsQueue Functions
  54. PHP DsPriorityQueue Functions
  55. PHP SPL Data structures
  56. Data Types in PHP — Variable Types in PHP
  57. ¶Data types of PHP
  58. ¶Integer
  59. ¶Example of Integer
  60. ¶Float / Double
  61. ¶Example of Float / Double
  62. ¶String
  63. ¶Example of String
  64. ¶Boolean
  65. ¶Example of Boolean
  66. ¶Null
  67. ¶Example of Null
  68. ¶Object
  69. ¶Example of Object
  70. ¶Array
  71. ¶Example of Array
  72. ¶Resource
  73. ¶Example of Resource
  74. ¶Check Variable data type in PHP

Variable data type in php

  • PHP Tutorial
  • PHP | Introduction
  • PHP Full Form
  • How to set PHP development environment in windows ?
  • LAMP installation and important PHP configurations on Ubuntu
  • PHP | Coding Standards
  • PHP | Basic Syntax
  • PHP | Variables
  • PHP echo and print
  • PHP | Data Types
  • PHP | Strings
  • PHP | Constants
  • PHP | Magic Constants
  • PHP | Decision Making
  • PHP | Loops
  • PHP | Superglobals
  • PHP | Regular Expressions
  • PHP Examples

PHP Advance

  • Describe PHP Include and Require
  • PHP | Basics of File Handling
  • PHP | fopen( ) (Function open file or URL)
  • PHP fread( ) Function
  • PHP fclose( ) Function
  • PHP | fwrite( ) Function
  • PHP | Uploading File
  • PHP Cookies
  • PHP | Sessions
  • PHP Filter and Filter Constant
  • Implementing callback in PHP
  • Exception Handling in PHP

PHP Array Functions

  • PHP | Arrays
  • PHP array() Function
  • PHP | array_change_key_case() Function
  • PHP array_chunk() Function
  • PHP | array_column() Function
  • PHP array_combine() Function
  • PHP array_count_values() Function
  • PHP array_diff() function
  • PHP array_diff_assoc() Function
  • PHP array_diff_key() Function
  • PHP array_diff_uassoc() Function
  • PHP array_diff_ukey() Function
  • PHP array_fill() function
  • PHP array_fill_keys() Function
  • PHP Array Functions Complete Reference
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PHP Calendar Functions

PHP Date/Time Functions

  • PHP Date and Time
  • PHP | checkdate() Function
  • PHP | date_create(), date_format(), date_add() Functions
  • PHP | date_create_from_format() Function
  • PHP | date_date_set() Function
  • PHP | date_default_timezone_get() Function
  • PHP | date_default_timezone_set() Function
  • PHP | date_diff() Function
  • PHP | date_get_last_errors() Function
  • PHP | date_isodate_set() Function
  • PHP | date_modify() Function
  • PHP | date_offset_get() Function
  • PHP | date_parse_from_format() Function
  • PHP | date_parse() Function
  • PHP | date_sub() Function

PHP Directory Functions

PHP Error

PHP Filesystem Functions

  • PHP basename( ) Function
  • PHP chgrp( ) Function
  • PHP chmod( ) Function
  • PHP chown( ) Function
  • PHP copy( ) Function
  • PHP dirname( ) Function
  • PHP disk_free_space( ) Function
  • PHP disk_total_space( ) Function
  • PHP feof( ) Function
  • PHP fflush( ) Function
  • PHP | fgetc( ) Function
  • PHP | fgets( ) Function
  • PHP | fgetss( ) Function
  • PHP | file_exists( ) Function
  • PHP file_get_contents() Function
  • PHP Filesystem Functions Complete Reference

PHP FTP Functions

  • PHP | ftp_alloc() function
  • PHP | ftp_chdir() function
  • PHP | ftp_close() function
  • PHP | ftp_connect() function
  • PHP | ftp_delete() function
  • PHP | ftp_exec() function
  • PHP | ftp_get() function
  • PHP | ftp_put() function
  • PHP | ftp_get_option() function
  • PHP | ftp_login() function
  • PHP | ftp_mdtm() Function
  • PHP | ftp_mkdir() function

PHP JASON

PHP Math Functions

PHP GMP Functions

PHP MySQLi Functions

PHP String Functions

PHP Network Functions

PHP IntlChar Functions

PHP Image Processing and GD Functions

PHP Gmagick Functions

PHP Imagick Functions

PHP ImagickDraw Functions

PHP DsDeque Functions

PHP DsMap Functions

  • PHP | Ds\Map allocate() Function
  • PHP | Ds\Map apply() Function
  • PHP | Ds\Map capacity() Function
  • PHP | DS\Map clear() Function
  • PHP | Ds\Map __construct() Function
  • PHP Ds\Map copy() Function
  • PHP | Ds\Map count() Function
  • PHP | Ds\Map diff() Function
  • PHP | Ds\Map filter() Function
  • PHP | Ds\Map first() Function
  • PHP Ds\Map Functions Complete Reference

PHP DSSequence Functions

PHP DSVector Functions

PHP DsStack Functions

PHP DsQueue Functions

PHP DsPriorityQueue Functions

PHP SPL Data structures

  • SplDoublyLinkedList in PHP
  • PHP SplDoublyLinkedList add() Function
  • PHP SplDoublyLinkedList bottom() Function
  • PHP SplDoublyLinkedList count() function
  • PHP SplFixedArray count() Function
  • PHP SplFixedArray current() Function
  • PHP SplFixedArray getSize() Function
  • PHP SplFixedArray key() Function
  • PHP SplObjectStorage addAll() Function
  • PHP SplObjectStorage attach() Function
  • PHP SplObjectStorage contains() Function
  • PHP SplObjectStorage count() Function
  • PHP SplQueue::__construct() Function
  • PHP SPL Data structures Complete Reference
  • PHP Tutorial
  • PHP | Introduction
  • PHP Full Form
  • How to set PHP development environment in windows ?
  • LAMP installation and important PHP configurations on Ubuntu
  • PHP | Coding Standards
  • PHP | Basic Syntax
  • PHP | Variables
  • PHP echo and print
  • PHP | Data Types
  • PHP | Strings
  • PHP | Constants
  • PHP | Magic Constants
  • PHP | Decision Making
  • PHP | Loops
  • PHP | Superglobals
  • PHP | Regular Expressions
  • PHP Examples
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PHP Advance

  • Describe PHP Include and Require
  • PHP | Basics of File Handling
  • PHP | fopen( ) (Function open file or URL)
  • PHP fread( ) Function
  • PHP fclose( ) Function
  • PHP | fwrite( ) Function
  • PHP | Uploading File
  • PHP Cookies
  • PHP | Sessions
  • PHP Filter and Filter Constant
  • Implementing callback in PHP
  • Exception Handling in PHP

PHP Array Functions

  • PHP | Arrays
  • PHP array() Function
  • PHP | array_change_key_case() Function
  • PHP array_chunk() Function
  • PHP | array_column() Function
  • PHP array_combine() Function
  • PHP array_count_values() Function
  • PHP array_diff() function
  • PHP array_diff_assoc() Function
  • PHP array_diff_key() Function
  • PHP array_diff_uassoc() Function
  • PHP array_diff_ukey() Function
  • PHP array_fill() function
  • PHP array_fill_keys() Function
  • PHP Array Functions Complete Reference

PHP Calendar Functions

PHP Date/Time Functions

  • PHP Date and Time
  • PHP | checkdate() Function
  • PHP | date_create(), date_format(), date_add() Functions
  • PHP | date_create_from_format() Function
  • PHP | date_date_set() Function
  • PHP | date_default_timezone_get() Function
  • PHP | date_default_timezone_set() Function
  • PHP | date_diff() Function
  • PHP | date_get_last_errors() Function
  • PHP | date_isodate_set() Function
  • PHP | date_modify() Function
  • PHP | date_offset_get() Function
  • PHP | date_parse_from_format() Function
  • PHP | date_parse() Function
  • PHP | date_sub() Function

PHP Directory Functions

PHP Error

PHP Filesystem Functions

  • PHP basename( ) Function
  • PHP chgrp( ) Function
  • PHP chmod( ) Function
  • PHP chown( ) Function
  • PHP copy( ) Function
  • PHP dirname( ) Function
  • PHP disk_free_space( ) Function
  • PHP disk_total_space( ) Function
  • PHP feof( ) Function
  • PHP fflush( ) Function
  • PHP | fgetc( ) Function
  • PHP | fgets( ) Function
  • PHP | fgetss( ) Function
  • PHP | file_exists( ) Function
  • PHP file_get_contents() Function
  • PHP Filesystem Functions Complete Reference

PHP FTP Functions

  • PHP | ftp_alloc() function
  • PHP | ftp_chdir() function
  • PHP | ftp_close() function
  • PHP | ftp_connect() function
  • PHP | ftp_delete() function
  • PHP | ftp_exec() function
  • PHP | ftp_get() function
  • PHP | ftp_put() function
  • PHP | ftp_get_option() function
  • PHP | ftp_login() function
  • PHP | ftp_mdtm() Function
  • PHP | ftp_mkdir() function

PHP JASON

PHP Math Functions

PHP GMP Functions

PHP MySQLi Functions

PHP String Functions

PHP Network Functions

PHP IntlChar Functions

PHP Image Processing and GD Functions

PHP Gmagick Functions

PHP Imagick Functions

PHP ImagickDraw Functions

PHP DsDeque Functions

PHP DsMap Functions

  • PHP | Ds\Map allocate() Function
  • PHP | Ds\Map apply() Function
  • PHP | Ds\Map capacity() Function
  • PHP | DS\Map clear() Function
  • PHP | Ds\Map __construct() Function
  • PHP Ds\Map copy() Function
  • PHP | Ds\Map count() Function
  • PHP | Ds\Map diff() Function
  • PHP | Ds\Map filter() Function
  • PHP | Ds\Map first() Function
  • PHP Ds\Map Functions Complete Reference

PHP DSSequence Functions

PHP DSVector Functions

PHP DsStack Functions

PHP DsQueue Functions

PHP DsPriorityQueue Functions

PHP SPL Data structures

  • SplDoublyLinkedList in PHP
  • PHP SplDoublyLinkedList add() Function
  • PHP SplDoublyLinkedList bottom() Function
  • PHP SplDoublyLinkedList count() function
  • PHP SplFixedArray count() Function
  • PHP SplFixedArray current() Function
  • PHP SplFixedArray getSize() Function
  • PHP SplFixedArray key() Function
  • PHP SplObjectStorage addAll() Function
  • PHP SplObjectStorage attach() Function
  • PHP SplObjectStorage contains() Function
  • PHP SplObjectStorage count() Function
  • PHP SplQueue::__construct() Function
  • PHP SPL Data structures Complete Reference
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Источник

Data Types in PHP — Variable Types in PHP

In our prevous Chapter, we’ve learned How to create and assign variable in PHP. We’ve seen that we can store some data in a variable and that data could be any type, like it could be a number, text or anything. This different types is called Data Type in the aspect of Programming language.

In this chapter, let’s learn the different data types of PHP.

¶Data types of PHP

There are total 8 data types in PHP.

  1. Integer — Store number / numeric number to a variable. eg: $age = 28 , $number1 = 50 .
  2. Float / Double — Store decimal or floating point number to a variable. eg: $price = 200000.50 , $cgpa = 3.8 .
  3. Boolean — Store only true or false to a variable. If something valid then = true otherwise = false .
  4. String — Store text like data to a variable. eg: $name = «Jhon Doe» , $welcome_text = «Welcome to Learn PHP»
  5. Null — Null is another special data type, if nothing found to store in a variable, then it’s used. Which stores only a single value NULL or null . eg: $avatar_url = null
  6. Object — Object are actually a user defined data types, means — we can create a custom data type which will use several key:value pair data.
  7. Array — Store same types of multiple data to a variable, it could be named or indexed. eg: $marks = [10, 20]
  8. Resource — Resource is another special types. It’s actually not a data type. It stores the reference value of some values.

¶Integer

Store number / numeric number to a variable.

¶Example of Integer

¶Float / Double

Store decimal or floating point number to a variable.

¶Example of Float / Double

Let’s assume a product price has some floating point value like 100.05. So, we’ve to use floating point value to this variable.

¶String

Store text like data to a variable.

¶Example of String

$name = "Jhon Doe"; $welcome_text = "Welcome to Learn PHP"; $post_title = "Data Types in PHP - Variable Types in PHP"; $post_slug = "data-types-in-php-variable-types-in-php"; $post_description = "xxxxxx";

¶Boolean

Store only true or false to a variable. If something valid then = true otherwise = false .

¶Example of Boolean

Suppose, in our system, we’ve an authentication system, where user could log in or not. So, there would be two case, either user is logged in or logged out. We can handle this using boolean data type true or false .

$is_user_logged_in = true; $is_user_logged_in = false;

¶Null

Null is another special data type, if nothing found to store in a variable, then it’s used. Which stores only a single value NULL or null .

¶Example of Null

Suppose, we’ve users in our website. When they first time register to our site, they don’t upload any image or called avatar. So, at first user image could be empty. We can use null to store at first registration.

¶Object

Object are actually a user defined data types, means — we can create a custom data type which will use several key:value pair data.

¶Example of Object

Suppose, we want to make a custom user defined data types of some specific things, then we use object like system. Object is an advanced topic, since we’ll discuss it later.

¶Array

Store same types of multiple data to a variable, it could be named or indexed.

¶Example of Array

Suppose, we want to store our list of marks in something, means — specific types of many data will be stored in a variable. Below example — $marks is an array data type variable.

¶Resource

Resource is another special types. It’s actually not a data type. It stores the reference value of some values.

¶Example of Resource

Resource is an advanced topic, since we’ll discuss it later.

¶Check Variable data type in PHP

So, we’ve learned the different data types. In our practical coding many times, we’ve to debug or test our code by checking the data type and data and PHP has a built in method or way to check that — var_dump( $variable_name )

That’s cool, right. We can easily check the data type for debug purpose.

Источник

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