The functions abandoned in php5.3 are:
ereg();//Replace directly with mb_ereg, or replace with preg_match, but the matching rules need to be included with /
eregi();//preg_match Instead, add i after the rule, such as: preg_match("/^(style|style_)(.*)*/i", $file);
ereg_replace();
set_magic_quotes_runtime();
split();
mysql_close(); // All closes will not be supported and need to be changed to: mysql_close($link);
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
