Format number as currency - php

Question

I am (learning) using PHP to select column data from MySQL into an array using this, CONCAT('$',FORMAT(price, '5')) as price and it outputs $1,751.60000 or $10.00230 or $7.23000 which is great.
However, I would like to remove the trailing zeros but still be able to have a minimum of two decimal places
$1,751.60000 = $1,751.60
$10.00230 = $10.0023
$7.23000 = $7.23
I have read a number of similar post regarding number to currency conversion but none doesn't seem to solve my problem as they remove all the trailing zeros.

Answer 1

We will implement this in two way.(Mysql, PHP).
MYSQL:
FORMAT('price', 2 ) This is mysql function. It takes first parameter as value & second parameter is the number of decimal places.
Syntax:
FORMAT( value, Decimal );
Example:
FORMAT('1751.60000', 2 ) => 1751.60 // Output
FORMAT('1751.60000', 3 ) => 1751.600 // Output
PHP:
In PHP we have number_format() function. This is working same as MYSQL.
Syntax:
number_format( value, Decimal );
Example:
number_format('1751.60000', 2 ) => 1751.60 // Output
number_format('1751.60000', 3 ) => 1751.600 // Output
The Best way is to implement at MYSQL.
Note: These both function round up the values.

Answer 2

I will post this code in PHP since it is easier for me.
$price = $row['price']; // the original price
if (number_format($price, 2) == $price) {
echo '$'.number_format($price, 2);
} else {
echo '$'.rtrim(number_format($price, 5),'0');
}
rtrim will remove any trailing character specified. In this case, remove trailing zeros.
Note : I only put this code number_format($price, 5) because of the sample of the question. If you wish to keep all decimal number minus trailing zeros, just using $price is enough.