2018-10-12 15:37:13 -04:00
---
title: Operators
---
## Operators
PHP contains all the normal operators one would expect to find in a programming language.
A single “=” is used as the assignment operator and a double “==” or triple “===” is used for comparison.
The usual “< ” and “>” can also be used for comparison and “+=” can be used to add a value and assign it at the same time.
Most notable is the use of the “.” to concatenate strings and “.=” to append one string to the end of another.
2018-10-31 23:20:20 +00:00
New to PHP 7.0.X is the Spaceship operator (< =>).
The spaceship operator returns -1, 0 or 1 when $a is less than, equal to, or greater than $b.
```php
< ?php
echo 1 < => 1; // 0
echo 1 < => 2; // -1
echo 2 < => 1; // 1
```
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### Ternary Operators
If you need a very short, simple, easy maintaining that work just like if else statement then php give you ternary operator. A very poweful but easy operator. It looks like this - (?:). Simple, right? Lets get to examle.
Suppose you need to send a massage that if the user is logged in then say 'Hello user_name' if not then 'Hello guest'.
if we use if-else statement:
```
if($user == !NULL {
$message = 'Hello '. $user;
} else {
$message = 'Hello guest';
}
```
Using ternary operator:
```
$message = 'Hello '.($user == !NULL ? $user : 'Guest');
```
Both of them do exactly same thing. But the later one is easy for maintainance.
#### More Resources
- [PHP Shorthand If/Else Using Ternary Operators (?:) ](https://davidwalsh.name/php-shorthand-if-else-ternary-operators )
