IPv6 addresses are in hexadecimal form, so each digit is of four bits, IPv6 address’s consist of possible digits are 0 1 2 3 4 5 6 7 8 9 A B C D E F. If you specify the base argument, the var argument should be a string - otherwise the base will not be applied.IPv6 address is of 128 bits and represented in eight octets of 16 bits. One additional note on the behavior of intval.
"099" will convert to 99, while "0x99" will convert to 0. "1.4e98 microLenats were generated when." will convert to 1.4e98Īlso note that only decimal base numbers are recognized in strings. "$1,000,000" will convert to 0 (the 1st character is not a valid start for a number However, if the leftmost character of a string looks like a valid numeric value, then PHP will keep reading the string until a character that is not valid in a number is encountered.
This will most likely print out 7, instead of the expected value of 8.įor more information, see the section on floating point numbers in the PHP manual ( )Īlso note that if you try to convert a string to an integer, the result is often 0. When dealing with some values, this can give odd results. Intval converts doubles to integers by truncating the fractional component of the number.
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