PHP: Notes

"PHP was originally an abbreviation of Personal Home Page, but it now stands for the recursive initialism PHP: Hypertext Preprocessor. " — Wikipedia

>>> PHP 8.2 released!

php --version : Check PHP version
php --help
php -S localhost:8000 : Start built-in webserver on port 8000

PHP Global Variables

PHP variables start with $.

Pre-defined, global scope.

$GLOBALS, $_SERVER, $_REQUEST, $_POST, $_GET, $_FILE, $_ENV, $_COOKIE, $_SESSION

PHP Online IDE

https://replit.com/

MVC Frameworks for Building PHP Web Applications

>>> CodeIgniter

>>> CakePHP

>>> Zend

>>> Lavarel

>>> Symphony

>>> Yii

References

PHP Tutorial | w3schools.com

Practice

>>> THM | Linux Backdoors - PHP Backdoors

RHEL: Install MySQL

[tuyendq@DangQuocTuyen ~]$ sudo yum list mysql Loaded plugins: product-id, search-disabled-repos, subscription-manager Error: No matching Packages to list [tuyendq@DangQuocTuyen ~]$ sudo yum install mysql Loaded plugins: product-id, search-disabled-repos, subscription-manager Resolving Dependencies --> Running transaction check ---> Package mariadb.x86_64 1:5.5.60-1.el7_5 will be installed --> Processing Dependency: mariadb-libs(x86-64) = 1:5.5.60-1.el7_5 for package: 1:mariadb-5.5.60-1.el7_5.x86_64 --> Running transaction check ---> Package mariadb-libs.x86_64 1:5.5.60-1.el7_5 will be installed --> Finished Dependency Resolution Dependencies Resolved ============================================================================================================================================= Package Arch Version Repository Size ================================...

Who is logged on to Windows

query user Check who is logged on to Windows: query user In Linux: who

IBM Domino: Exprired password

Your account is locked out if you do not change your expired password. IBM Notes: Password is expired Account is locked out when password is expired Example of password policy

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