To force a user-input into a real roman number use decrom(romdec($input)). Note: romdec() does not check whether a string is really roman or not. These are functions to convert roman numbers (e.g. Of course I don't claim it to be a good one, but it works for me and my purpose. If the input is 1 for example it will be filled up with zeros. So, assuming I have the following mac address: '00:de:34:ef:2e:f4', written as: '00de34ef2ef4' and I want to encode in to something like '\x00\xdeU\xef. dpkt package expect me to pass the data as hex stings. I have MAC address that I want to send to dpkt as raw data. In this specific example though, since I use it for game internals that can only handle 32 bit numbers, it will truncate calculations at 8 digits. Convert from mac address to hex string and vice versa - both python 2 and 3. You can easily change it for your needs but it is, thanks to bcmath, capable of handling big numbers via string. The calculation exceeded unsigned integer and even float range. I was challenged by a problem with large number calculations and conversion to hex within php. Output: The equivalent decimal number as a String. Input: A hexadecimal number as a String. Output: The equivalent hexadecimal number as a String. And I really mean LARGE, much larger than any function posted earlier. Usually MAC address is being provided in encrypted format. Any one of these separators is used for grouping the MAC address and each group contains 2 Hex numbers. Here are two functions that will convert large dec numbers to hex and vice versa. This identification number is called as MAC address and it is represented in three formats using three different separators like Colon (:), hyphen (-) and Blank Space. To see the work and the answers, highlight the area under the question by clicking and dragging your mouse over it.Getting Started Introduction A simple tutorial Language Reference Basic syntax Types Variables Constants Expressions Operators Control Structures Functions Classes and Objects Namespaces Enumerations Errors Exceptions Fibers Generators Attributes References Explained Predefined Variables Predefined Exceptions Predefined Interfaces and Classes Predefined Attributes Context options and parameters Supported Protocols and Wrappers Security Introduction General considerations Installed as CGI binary Installed as an Apache module Session Security Filesystem Security Database Security Error Reporting User Submitted Data Hiding PHP Keeping Current Features HTTP authentication with PHP Cookies Sessions Dealing with XForms Handling file uploads Using remote files Connection handling Persistent Database Connections Command line usage Garbage Collection DTrace Dynamic Tracing Function Reference Affecting PHP's Behaviour Audio Formats Manipulation Authentication Services Command Line Specific Extensions Compression and Archive Extensions Cryptography Extensions Database Extensions Date and Time Related Extensions File System Related Extensions Human Language and Character Encoding Support Image Processing and Generation Mail Related Extensions Mathematical Extensions Non-Text MIME Output Process Control Extensions Other Basic Extensions Other Services Search Engine Extensions Server Specific Extensions Session Extensions Text Processing Variable and Type Related Extensions Web Services Windows Only Extensions XML Manipulation GUI Extensions Keyboard Shortcuts ? This help j Next menu item k Previous menu item g p Previous man page g n Next man page G Scroll to bottom g g Scroll to top g h Goto homepage g s Goto search The following examples have answers in white beneath them. Try a few examples to get better at converting.
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