diff --git a/tools.func.md b/tools.func.md
index da8c4fb..a71c3ff 100644
--- a/tools.func.md
+++ b/tools.func.md
@@ -101,6 +101,89 @@ If no version is specified, the script will automatically fetch and install the
 
 ---
 
+## install_mysql
+
+### Description
+
+`install_mysql()`:
+
+- Detecting if MySQL is already installed
+- Replacing it with the specified version if it differs
+- Removing conflicting packages and cleaning up old sources
+- Setting up the official MySQL APT repository
+- Installing the MySQL server package
+
+
+### Usage
+
+```bash
+install_mysql
+```
+To install a specific version of MySQL, export the `MYSQL_VERSION` variable before calling the function:
+
+```bash
+MYSQL_VERSION="5.7" install_mysql
+```
+
+### User-Configurable Variables
+
+| Variable     | Description                                                                 | Default Value |
+|--------------|-----------------------------------------------------------------------------|---------------|
+| `MYSQL_VERSION` | Specifies the version of MySQL to install.. | `8.0`|
+
+---
+
+## install_php
+
+### Description
+
+`install_php()`:
+- Detects the current PHP version and upgrades or switches if necessary.
+- Adds the `sury.org` repository if not already configured.
+- Installs the specified PHP version along with default and user-defined modules.
+- Patches `php.ini` files with custom configuration values.
+- Optionally enables PHP for Apache or PHP-FPM.
+
+### Usage
+
+```bash
+install_php
+```
+You can set any of the environment variables below to customize the behavior:
+
+```bash
+PHP_VERSION="8.3" PHP_APACHE="YES" PHP_FPM="NO" PHP_MEMORY_LIMIT="1G" install_php
+```bash
+
+#### PHP Modules
+These modules are installed by default:
+```bash
+bcmath, cli, curl, gd, intl, mbstring, opcache, readline, xml, zip
+```
+You can add custom modules with this command:
+```bash
+PHP_MODULE="mysql,redis" install_php
+```
+### User-Configurable Variables
+
+| Variable                  | Description                                                            | Default Value |
+|---------------------------|------------------------------------------------------------------------|---------------|
+| `PHP_VERSION`             | PHP version to install (e.g., `8.2`, `8.3`, `8.4`)                     | `8.4`         |
+| `PHP_MODULE`              | Comma-separated list of additional PHP modules (e.g., `mysql,redis`)  | *(empty)*     |
+| `PHP_APACHE`              | Set to `YES` to enable PHP module for Apache                          | `NO`          |
+| `PHP_FPM`                 | Set to `YES` to install and configure PHP-FPM                         | `NO`          |
+| `PHP_MEMORY_LIMIT`        | Sets `memory_limit` in relevant `php.ini` files                        | `512M`        |
+| `PHP_UPLOAD_MAX_FILESIZE` | Sets `upload_max_filesize` in relevant `php.ini` files                 | `128M`        |
+| `PHP_POST_MAX_SIZE`       | Sets `post_max_size` in relevant `php.ini` files                       | `128M`        |
+| `PHP_MAX_EXECUTION_TIME`  | Sets `max_execution_time` in relevant `php.ini` files                  | `300`         |
+
+---
+
+
+
+
+
+