hexdec Hexadecimal to decimal numberhexdec stringhex_string Returns the decimal equivalent of the hexadecimal number represented by the hex_string argument. hexdec converts a hexadecimal string to a decimal number. The largest number that can be converted is 7fffffff or 2147483647 in decimal. As of PHP 4.1.0, this function can also convert larger numbers. It returns float in that case. hexdec will ignore any non-hexadecimal characters it encounters. ]]> See also dechex, bindec, octdec and base_convert.