How can I run the copied code without any effect? Php100 message board-php Tutorial

How can I run the copied code without any effect? Php100 message board php100 old version of the tutorial is not lagging behind

Reply to discussion (solution)

Your code requires php to enable the short Mark function (php 7 has abolished the short Mark function)

What should we do? What can I do if I do not insert a short tag?

$ _ SQL = "select * from message ";
The buddy typed it wrong. the semicolon should be behind the quotation marks!
An error should be reported. no prompt is displayed!

All written

Solved the problem of enabling short labels in php. ini.