PHP comparison operators

PHP comparison operators

 

Comparison Operators:

• Equal (==)
• Identical (===)
• Not equal (!= or <>)
• Not identical (!==)
• Greater than (>)
• Less than (<)
• Greater than or equal to (>=)
• Less than or equal to (<=)

php comparison operators 

Example :-

<?php

$a=10;

$b=5;

$c=20;

$d=20;

var_dump($a < $c); //true

echo"<br>";

var_dump($a < $b);

echo"<br>";

var_dump($a<=$c);//t

echo"<br>";

var_dump($b>$c);//f

echo "<br>";

var_dump($c>=$d);//true

echo "<br>";

var_dump($c==$d);//t

echo"<br>";

var_dump($a != $d);//t

?>

php comparison operators 

OUTPUT :-

bool(true)
bool(false)
bool(true)
bool(false)
bool(true)
bool(true)
bool(true)

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PHP operators

PHP operators

PHP operators 

1. 1] Arithmetic Operators:

   • Addition (+)
   • Subtraction (-)
   • Multiplication (*)
   • Division (/)
   • Modulus (%)
   • Exponentiation (**)

2. 2] Assignment Operators:

   • Assignment (=)
   • Addition assignment (+=)
   • Subtraction assignment (-=)
   • Multiplication assignment (*=)
   • Division assignment (/=)
   • Modulus assignment (%=)

3. 3] Comparison Operators:

   • Equal (==)
   • Identical (===)
   • Not equal (!= or <>)
   • Not identical (!==)
   • Greater than (>)
   • Less than (<)
   • Greater than or equal to (>=)
   • Less than or equal to (<=)

4. 4] Logical Operators:

   • AND (&& or and)
   • OR (|| or or)
   • NOT (! or not)
   • XOR (exclusive OR) (xor)

5. 5] Increment/Decrement Operators:

   • Increment (++)
   • Decrement (--)

6. 6] String Operators:

   • Concatenation (.)
   • Concatenation assignment (.=)

7. 7] Array Operators:

   • Union (+)
   • Equality (==)
   • Identity (===)
   • Inequality (!= or <>)
   • Not identical (!==)

8. 8] Ternary Operator:

• Syntax :-
9. (condition) ? expression1 : expression2;

it works:

• 1] If the condition evaluates to true, the expression1 is executed.
• 2] If the condition evaluates to false, the expression2 is executed.

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PHP data Type

 Variable Data Type in PHP

1] PHP String :-

        Represents a sequence of characters.

Example: $name = "seeta";

2] PHP Integer :-

Represents whole numbers without decimal points.

Example :- $number = 100;

3] PHP Float :-

Floating point numbers or Doubles

Represents numbers with decimal points.

Example :- $float_number = 9.7;

4] PHP Boolean :-

Represents true or false values.

Example: true;

5] PHP Array :-

Represents a collection of elements, each identified by a key.

Example: $colors = array("red", "green", "blue");

6] PHP Object :-

Represents instances of user-defined classes.

Example:

class Car { public $color = "blue"; public $make = "Toyota"; } $car = new Car();

7] PHP NULL :-

Represents a variable with no value.

Example: $variable = null;

1. 8] PHP Resource :-
2. Represents a special variable that holds a reference to an external resource.
3.    A common example of using the resource data type is a database call.                         It is the storing of a reference to functions and resources external to PHP.
4. 
   

Variable data type
Example

/* data type  variable */
<?php
$no1=10;
$no2=85.99;
$name1='aman';
$name2="aishwarya";
$status="false";
$student=array("payal","aishwary");


VAR_DUMP($no1);
var_dump($no2);
var_dump($name1);
var_dump($name2);
var_dump($status);
var_dump($student);
?>




variable data type
Output





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