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PHP Tutorial » PHP Data Types

What are PHP data types?
In PHP language, unlike other programming languages (C ++, Java, etc.), we do not have to declare the data type, because the PHP language automatically determines the assigned value.

PHP supports the following eight data types.:

These data types are used to construct variables.

 

PHP Integers

An integer data type is a non-decimal number, whole numbers, without a decimal point (...,-4, -3, -2, -1, 0, 1, 2, 3, 4, ...)

Integers can be specified in: decimal (base 10), hexadecimal (base 16), octal (base 8), or binary (base 2) notation

Example (this is HTML - PHP editor, change text, values on this window)
<?php
$x = 456; // decimal number
var_dump($x);
echo "<br>";

$y = -678; // a negative number
var_dump($y);
echo "<br>";

$z = 0xB1A; // hexadecimal number
var_dump($z);
echo "<br>";

$w = 2767; // octal number
var_dump($w);
?>

 

PHP Strings

A string is a sequence of characters, as "Hi, how are you".

A string can be any text inside single or double quotes:

Example (this is HTML - PHP editor, change text, values on this window)
<?php
$x = 'Hi, how are you';
echo $x;
echo "<br>";

$y = "Hi, how are you";
echo $y;
echo "<br>";

$z = 'Learn PHP tutorial, I\"ll be back soon.';
echo $z;
?>

 

Related subjects:
PHP syntax What is an array PHP variables Echo and print statement

 

Tags: php data types check, php 7, variable type declaration, how many different data types are available in php? compound data types, special data types
What are PHP data types?
How many data types are in PHP?
What are the 7 data types?
What are the 4 main data types?

 

PHP Floating Point Numbers or Doubles

A float (floating point number as "floats", "doubles", or "real numbers") is a number with a decimal point or fractional.

Example (this is HTML - PHP editor, change text on this window)
<?php
$x = 4.264;
var_dump($x);
echo "<br>";

$y = 12.23e3;
var_dump($y);
echo "<br>";

$z = 3E-10;
var_dump($z);
?>

To see the result of the PHP code above please click Execute

PHP Boolean

Booleans has only two possible values either 1 (true) or 0 (false).

Example (this is HTML - PHP editor, change text on this window)
<?php
// Assign the value TRUE to a variable
$show_error = true;
var_dump($show_error);
?>

 

PHP Arrays

An array can stores multiple values in one single variable.PHP var_dump() function returns the data type and value:

Example (this is HTML - PHP editor, change text on this window)
<?php
$my_colors = array("Red", "Blue", "Green");
var_dump($my_colors);
echo "<br>";

$color_codes = array(
"Red" => "#ff0000",
"Blue" => "#0000ff",
"Green" => "#00ff00"
);
var_dump($color_codes);
?>

PHP Objects

An object data type is a data that not only allows storing data but also information on, how to process that data.

An object is a specific instance of a class which serve as templates for objects. Objects are created based on this template via the new keyword.

Example (this is HTML - PHP editor, change text on this window)
<?php
// Class definition
class greeting{
// properties
public $my_greeting = "Hi, how are you!";

// methods
function show_greeting(){
return $this->my_greeting;
}
}

// Create object from class
$message = new greeting;
var_dump($message);
?>

 



php data types check, php 7, php variable type declaration, how many different data types are available in php? compound data types in php, special data types in php
What are PHP data types?
How many data types are in PHP?
What are the 7 data types?
What are the 4 main data types?
PHP Data Types - Example - What are PHP data types? - php tutorial

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