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@ 2015-04-29T00:06:22Z

<?php
function foo($v) {
    if (!is_numeric($v)) {
        throw new InvalidArgumentException(
            sprintf(
                "Argument 1 passed to %s() must be a valid number, %s given in %s on line %d",
                __FUNCTION__,
                gettype($v),
                __FILE__,
                __LINE__
                )
            );
    }
    echo $v;
}

foo("9999999999999999999999999999999");

Output
Performance
VLD
References
Branches

is_numeric: documentation ( source)
sprintf: documentation ( source)

preferences:dark modelive preview

44.9 ms | 402 KiB | 5 Q