It's obsolete because most of it is no longer correct.
I'm not going to bother rebuting all of it, those who really want to educate themselves can use Algolia search for the link and find great comments.
But from a quick glance of the start, the article cites "mysql_real_escape_string()". That function has been deprecated 11 years ago. And removed 8 years ago.
I've searched Algolia; the comments in the original 2012 thread are mostly "yeah, it's roughly accurate and PHP sucks", the ones from 2014 and onwards are mostly "it's all lies, PHP has come long way and fixed lots of things" but with no specific examples except for that "mysql_real_escape_string()". Surely there were other improvements that could merit a mention?
I'm not going to bother rebuting all of it, those who really want to educate themselves can use Algolia search for the link and find great comments.
But from a quick glance of the start, the article cites "mysql_real_escape_string()". That function has been deprecated 11 years ago. And removed 8 years ago.
https://www.php.net/manual/en/function.mysql-real-escape-str...