What potential errors or pitfalls should be considered when using the number_format function in PHP?

One potential error to consider when using the number_format function in PHP is that it may not work as expected if the input number is not a valid numeric value. To avoid this issue, you can first validate the input to ensure it is a numeric value before applying the number_format function. 

$number = "12345.67";

if (is_numeric($number)) {
    $formatted_number = number_format($number, 2);
    echo $formatted_number;
} else {
    echo "Invalid input, please provide a numeric value.";
}

Keywords

number_format PHP errors pitfalls floating-point precision

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