To create a web log (blog) with PHP, you will need to follow these steps:

1. Set up a database: Start by setting up a database to store your blog posts. You can use MySQL, PostgreSQL, or any other database you prefer. Create a table to store your posts with columns such as ID, title, content, date, and author.

2. Create a form to submit blog posts: Create a form in HTML with fields for the title and content of the blog post. When the form is submitted, send the data to a PHP script that will insert it into the database.

3. Insert blog posts into the database: In your PHP script, connect to the database and insert the submitted blog post into the table you created earlier. Use SQL statements to insert the data into the corresponding columns.

4. Display the blog posts: Create a PHP script that retrieves the blog posts from the database and displays them on the webpage. Use SQL statements to retrieve the posts and iterate through the results to display each post’s title, content, date, and author.

5. Implement pagination: If you have a large number of blog posts, it’s a good idea to implement pagination to display a limited number of posts per page. You can use the LIMIT clause in your SQL statement to achieve this.

6. Add user authentication: If you want to allow users to create accounts and log in to your blog, you can add user authentication. Create a user table in your database, and hash and salt passwords for security. Allow users to register, log in, and log out using PHP sessions.

7. Allow users to comment on blog posts: Add functionality to allow users to comment on blog posts. Create a comments table in your database and associate each comment with a specific blog post. When displaying the blog posts, retrieve the associated comments and display them below each post.

8. Implement search functionality: If you want users to be able to search for specific blog posts, implement search functionality. Add a search bar to your website and create a PHP script that retrieves the relevant blog posts based on the search query.

9. Add styling and design: Enhance the look of your blog by adding CSS styles to your HTML templates. Use CSS to customize the layout, fonts, colors, and other visual elements of your blog.

10. Deploy your blog: Once your blog is complete, deploy it to a web server to make it accessible to users. You can use a web hosting service or set up your own server.

These are the basic steps to create a web log (blog) with PHP. You can customize and expand on these steps based on your specific requirements and preferences.