What is the potential issue with rounding numbers in PHP when dealing with different data types?

When rounding numbers in PHP, the potential issue arises when dealing with different data types such as integers and floats. Rounding a float number to an integer may result in unexpected behavior due to the inherent precision differences between these data types. To solve this issue, it is recommended to explicitly cast the number to the desired data type before rounding.

$floatNumber = 10.5;
$roundedNumber = (int) round($floatNumber);
echo $roundedNumber;