Content management system (CMS) and the use of regular expressions

Text, images, and other elements of a webpage placed on the code of the HTML document that provide readable information relevant to visitor needs are called content. They usually require changes and changes from time to time, and the frequency depends on the type and activity level of the site owner's organization. The task of making these changes to the content is known as content management, which can affect part or all of a web page in the event of deleting, adding and editing existing content. Being a good practice and somehow unavoidable for continually updating websites, there is a need to create a structure for managing the content of a website. This structure is known as the Content Management System (CMS). The Content Management System can take two forms: the structure that uses HTML templates and the structure that uses the database-based site model.

The content management system is based on HTML templates structured to make changes to an offline page followed by loading into the corresponding directory on the site. The content and HTML tags are intertwined. For the visitor management system that uses a database-based site model, the content is separated from the HMTL file. When a site is based on a database, the content that is printed in the browser comes from the database and not from the static HTML tags placed on the page before loading. Therefore, when it comes to new content in a database model based on a database, two relevant issues need to be considered: content presentation and content printing.

1. Content Submission: Submit new content via forms. Due to the separation of the HTML document from the content of the site controlled by the database, you may need to specify the content format before submitting, especially if it is a long text. Some forms of using the Content Management System with tools ready to format the text directly, such as bold, underlined, italic, etc. You can create custom labels and place them in the appropriate places in your text if you use a form, there is a lack of formatting facilities. These tags allow you to create paragraphs, bold letters, underscores, etc. This is where the use of common terms comes into play to interpret these custom formatting tags in the browser.

Regular expressions (regular expressions) are essentially a declarative language for pattern matching (strings). With regular expressions we can:

See if a string matches a specified pattern as a whole.
Search a chain for a substring that matches a specific pattern.
Extract substrates that match a specified pattern from a string.
The SQL SELECT statement will search where the pattern in its WHERE clause matches the string in the column (s) of the specified table, p. SELECT * FROM news WHERE content as '% passion%'. Its functionality is limited to a pattern that matches a complete chain. Regular expressions go beyond connecting patterns with substrates in a string, which is why it is a very fascinating and powerful tool for searching long text.

There are several types of regular expressions, each with its set of features. For example, PHP supports regular POSIX expressions and regular expressions compatible with Perl. POSIX is the abbreviation for Portable Operating System Interface. Examples of POSIX regular expression functions are ereg (), eregi (), ereg_replace (), and eregi_replace (). Some PERL functions are preg_match (), preg_match_all, and preg_replace ().

2. Content printing: Content sent to a database table will contain custom labels such as [PA] for paragraphs and [UND] for underscores, located at the appropriate places in the text. They are better created, as you will understand. The script that will download and print the formatted content in the browser will contain the appropriate regular expressions. The regular expression searches where each instance of custom labels appears in the text and converts them into their HTML tags before printing as [PA] conversion to HTML paragraph code.