Japan’s efforts to deal with the COVID-19 pandemic have lead to a big increase in free education websites. Try searching the web for the terms “Python 無料 学習” (muryou gakushuu — free education), and you’ll see you’ll get a huge number of hits. These sites can allow you to study while you’re still overseas, so […]
This time, I’m going to dig into individual functions and explain them a little. In particular, I’m going to go in depth on the ob_start () function, which is the basis of many output control functions.
This time, we’ll be looking at the various functions relating to output control (the ob_* functions). First, let’s look at the common use case. First, by far the most common use is probably to work against the messages ‘Warning: session_start (): Cannot start session when headers already sent in’ and ‘Warning: Cannot modify header information […]
The largest PHP event in Japan, PHP Conference Japan 2019, was held on December 1st, 2019. PHP Conference Japan is actually the world’s first PHP Conference.
The question of combining Multi-factor Authentication (MFA) and privileged access control is an important part of the company’s information security.
In this column, I’d like to discuss the importance of the UDP protocol. This protocol is used for UNIX networks, including Linux networks.
Previously, we learned about the hash itself, the first step in preserving and comparing passwords. This time, we use that knowledge to learn about how passwords should be saved.
In this column, let’s learn about hash functions as a prelude to learning about ways to save and compare passwords. First, I’ll discuss hashing.
In the last column, we used the combination of the functions random_bytes() and [bin2hex|base64_encode]() to create tokens. What are tokens used for?