free() the malloc(): PHP Operators

PHP support following operators

Arithmetic Operators
Comparision Operators
Logical (or Relational) Operators
Assignment Operators
Conditional (or ternary) Operators

Arithmetic Operator

lets A = 10 and B = 20

Operator Description Example

+ Adds two operands A + B will give 30

- Subtracts second operand from the first A - B will give -10

* Multiply both operands A * B will give 200

/ Divide numerator by denumerator B / A will give 2

% Modulus Operator and remainder of after an integer division B % A will give 0

++ Increment operator, increases integer value by one A++ will give 11

-- Decrement operator, decreases integer value by one A-- will give 9

Operator	Description	Example
+	Adds two operands	A + B will give 30
-	Subtracts second operand from the first	A - B will give -10
*	Multiply both operands	A * B will give 200
/	Divide numerator by denumerator	B / A will give 2
%	Modulus Operator and remainder of after an integer division	B % A will give 0
++	Increment operator, increases integer value by one	A++ will give 11
--	Decrement operator, decreases integer value by one	A-- will give 9

lets do a simple example.

<html>
<head><title>Arithmetical Operators</title><head>
<body>
<?php
$a = 10;
$b = 20;

$c = $a + $b;
echo "Addtion Operation Result: $c ";
$c = $a - $b;
echo "Substraction Operation Result: $c ";
$c = $a * $b;
echo "Multiplication Operation Result: $c ";
$c = $a / $b;
echo "Division Operation Result: $c ";
$c = $a % $b;
echo "Modulus Operation Result: $c ";
$c = $a++;
echo "Increment Operation Result: $c ";
$c = $a--;
echo "Decrement Operation Result: $c ";
?>
</body>
</html>

Comparison Operators

lets A = 10 and B = 20

Operator Description Example

== Checks if the value of two operands are equal or not, if yes then condition becomes true. (A == B) is not true.

!= Checks if the value of two operands are equal or not, if values are not equal then condition becomes true. (A != B) is true.

> Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true. (A > B) is not true.

< Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true. (A < B) is true.

>= Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true. (A >= B) is not true.

<= Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true. (A <= B) is true.

Operator	Description	Example
==	Checks if the value of two operands are equal or not, if yes then condition becomes true.	(A == B) is not true.
!=	Checks if the value of two operands are equal or not, if values are not equal then condition becomes true.	(A != B) is true.
>	Checks if the value of left operand is greater than the value of right operand, if yes then condition becomes true.	(A > B) is not true.
<	Checks if the value of left operand is less than the value of right operand, if yes then condition becomes true.	(A < B) is true.
>=	Checks if the value of left operand is greater than or equal to the value of right operand, if yes then condition becomes true.	(A >= B) is not true.
<=	Checks if the value of left operand is less than or equal to the value of right operand, if yes then condition becomes true.	(A <= B) is true.

Lets do a simple example

<html>
<head><title>Comparision Operators</title><head>
<body>
<?php
$a = 10;
$b = 20;

if( $a == $b ){
echo "TEST1 : a is equal to b ";
}else{
echo "TEST1 : a is not equal to b ";
}

if( $a > $b ){
echo "TEST2 : a is greater than b ";
}else{
echo "TEST2 : a is not greater than b ";
}
if( $a < $b ){
echo "TEST3 : a is less than b ";
}else{
echo "TEST3 : a is not less than b ";
}
if( $a != $b ){
echo "TEST4 : a is not equal to b ";
}else{
echo "TEST4 : a is equal to b ";
}
if( $a >= $b ){
echo "TEST5 : a is either grater than or equal to b ";
}else{
echo "TEST5 : a is nieghter greater than nor equal to b ";
}
if( $a <= $b ){
echo "TEST6 : a is either less than or equal to b ";
}else{
echo "TEST6 : a is nieghter less than nor equal to b ";
}
?>
</body>
</html>
in here if() is codition checker. You will lern more about it later.

Assignment Operators

lets A = 10 and B = 20

Operator Description Example

= Simple assignment operator, Assigns values from right side operands to left side operand C = A + B will assigne value of A + B into C

+= Add AND assignment operator, It adds right operand to the left operand and assign the result to left operand C += A is equivalent to C = C + A

-= Subtract AND assignment operator, It subtracts right operand from the left operand and assign the result to left operand C -= A is equivalent to C = C - A

*= Multiply AND assignment operator, It multiplies right operand with the left operand and assign the result to left operand C *= A is equivalent to C = C * A

/= Divide AND assignment operator, It divides left operand with the right operand and assign the result to left operand C /= A is equivalent to C = C / A

%= Modulus AND assignment operator, It takes modulus using two operands and assign the result to left operand C %= A is equivalent to C = C % A

Operator	Description	Example
=	Simple assignment operator, Assigns values from right side operands to left side operand	C = A + B will assigne value of A + B into C
+=	Add AND assignment operator, It adds right operand to the left operand and assign the result to left operand	C += A is equivalent to C = C + A
-=	Subtract AND assignment operator, It subtracts right operand from the left operand and assign the result to left operand	C -= A is equivalent to C = C - A
*=	Multiply AND assignment operator, It multiplies right operand with the left operand and assign the result to left operand	C = A is equivalent to C = C A
/=	Divide AND assignment operator, It divides left operand with the right operand and assign the result to left operand	C /= A is equivalent to C = C / A
%=	Modulus AND assignment operator, It takes modulus using two operands and assign the result to left operand	C %= A is equivalent to C = C % A

Lets do a simple example

<html>
<head><title>Assignment Operators</title><head>
<body>
<?php
$a = 10;
$b = 20;

$c = $a + $b;
echo "Addtion Operation Result: $c ";
$c += $a;
echo "Add AND Assigment Operation Result: $c ";
$c -= $a;
echo "Subtract AND Assignment Operation Result: $c ";
$c *= $a;
echo "Multiply AND Assignment Operation Result: $c ";
$c /= $a;
echo "Division AND Assignment Operation Result: $c ";
$c %= $a;
echo "Modulus AND Assignment Operation Result: $c ";
?>
</body>
</html>

Logical Operators

lets A = 10 and B = 20

Operator Description Example

? : Conditional Expression If Condition is true ? Then value X : Otherwise value Y

Operator	Description	Example
? :	Conditional Expression	If Condition is true ? Then value X : Otherwise value Y

Lets do a simple example

<html>
<head><title>Arithmetical Operators</title><head>
<body>
<?php
$a = 10;
$b = 20;

$result = ($a > $b ) ? $a :$b;
echo "TEST1 : Value of result is $result ";

$result = ($a < $b ) ? $a :$b;
echo "TEST2 : Value of result is $result ";
?>
</body>
</html>

free() the malloc()

Java EE

Dec 14, 2014

PHP Operators

Arithmetic Operator

Comparison Operators

Assignment Operators

Logical Operators

No comments:

Post a Comment