Development Environment, comments, variables, arrangement, associated arrays, operators, and special characters

$ B, $ c, and $ d have different variable types in function test and are not affected. Development Environment, comments, variables, arrangement, associated arrays, operators, and special characters

Because there are more and more websites that can use PHP, it is necessary to verify the difference with Perl.
Unlike Perl, PHP is easy to connect with SQL and RDBMS.
PHP + MySQL should also be verified one by one.
Investigate the differences between the article structure of PostgreSQL and MySQL.

Hello PHP

Test PHP-the work promised.

PHP, which is not found in function files such as fopen, indicates that error handling is stopped.
If you want to process the returned code when it is not found, the Error Trap should be done, and the @ sign should be made before the function, as shown below.
In this case, the error is blocked.

$fno = @fopen("path/filename", 'r');

PHP and permission settings do not seem to need to be used.
Because PHP does not actually work in an international Internet environment, I have to believe it now.
Use an intranet to work at www.
It does not work when it is the same as CGI-Perl and is placed on cgi-bin.
(This may be what the environment is set .)

It seems to be CGI-Perl, but the path to PHP is not in front.

PHP code starts with a representation.
This is similar to ASP.
In addition

 <%... %>