What is the significance of using points instead of commas in PHP calculations?

When performing calculations in PHP, it is important to use points (.) instead of commas (,) as the decimal separator. This is because PHP interprets commas as concatenation operators rather than decimal points in numerical calculations. Using points ensures that PHP recognizes the numbers as floating-point values and performs accurate calculations.

$number1 = 10.5;
$number2 = 5.2;

$result = $number1 + $number2;

echo $result;