Is FILTER_VALIDATE_INT behavior in PHP consistent with the definition of integers?

The FILTER_VALIDATE_INT behavior in PHP is consistent with the definition of integers, as it validates whether a variable is an integer or not. However, it does not check for the range of values an integer can have. To ensure that the integer falls within a specific range, additional validation is required. 

$int = "10";

if (filter_var($int, FILTER_VALIDATE_INT) !== false && (int)$int >= 0 && (int)$int <= 100) {
    echo "Valid integer within the range.";
} else {
    echo "Invalid integer or not within the specified range.";
}

Keywords

FILTER_VALIDATE_INT PHP integers consistency behavior

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