﻿ PHP tutorial-PHP operators

# PHP tutorial-PHP operators

## PHP operators

### Assignment Operator

= sign is used as the assignment operator in PHP. The assignment operator is used to assing a value to a variable.

Example:

\$yourage=18;

### Arithmetic operators

 Operator Description Example Result + Addition a=1+2 3 - Subtraction a=3-1 2 * Multiplication a=2*5 10 / Division 10/2 5 % Modulus (division remainder) 10%2 0 ++ Increment a=3 a++ a=4 -- Decrement a=3 a-- a=2

### Comparison operators

The comparison operators as shown below are used to compare two variables or expressions. The result of the comparison operation can be true or false.

 Operator Description Example == equal to 1==2 evaluated to false != not equal 1!=2 evaluated to true > greater than 1>2 evaluated to false < less than 1<2 evaluated to true >= greater than or equal to 1>=2 evaluated to false <= less than or equal to 1<=2 evaluated to true

### Logical Operators

The logical operations are used to do the logical operations of two variables or expressions. We have three logical operators in PHP. The && operator represents the logical and operation. The || operator represents the logical or operation. And the ! operator represents the logical not operation.

 Operator Description Example && and x=1 y=2 (x < 5 && y > 1) evaluated to true || or x=1 y=2 (x>2 || y>1) evaluated to true ! not x=1 y=2 !(x==y) evaluated to true

### Compound Operators

Each compound operator combines two operators together. For example a compound operator might combines the adding operator and the assignment operator.

 Operator Example The Same As += x+=y x=x+y -= x-=y x=x-y *= x*=y x=x*y /= x/=y x=x/y .= x.=y x=x.y %= x%=y x=x%y

### Sting concatenation operator (.)

In PHP, the point symbol (.) is used to concatenate strings.

Example:
\$yourname="Yuk"."Sovandara";

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