Professional solutions for parsing (grabbers) data
The development period depends on the complexity of the project and takes from 1 to 12 months. The contractual cost depends on the complexity of the development and on the donor's resource.
DE2COM specialists are developing parsers for data collection.
Creation of data parsers of any complexity for any purpose.
Parsing is the automatic collection of information from any source for the purpose of its further processing and transformation. Most often, parsing is carried out using PHP, Perl or another scripting, service programming language. A program that is used to analyze and data processing is called a parser. The finished data, as a rule, is laid out in a database, presented as a file or in XML format.
An example of parsing can be, for example, processing the site of an online store, the result of which is a list of products presented in each category. For SEO, you can give your own example - for example, search robots are parsing, analyzing pages and storing the received data about them in its own database. This data is then used by the search engine to rank the analyzed sites and generate SERPs. Also, parsing is the basis of any services for SEO-specialists and marketers, allowing to analyze sites from search results.
However, it also happens that the purpose of parsing is not to obtain any data from the processed content, but the content itself, presented in a digestible form.
Parser programs work according to the same principle, operating in three stages.
Collecting information from one or more sources
In accordance with the specified settings, the program bypasses the specified sources of information on the Web. Since these sources are most often web pages, the parser processes their HTML source code.
Receiving and transforming information
The data that was collected at the first stage is processed by means of a parser - most often using regular expressions. If necessary, at this stage the information can be converted into the required format.
The final stage, after which the program outputs the result in the specified form. The data is output or written in a user-friendly form.
A similar but not the same concept is grabbing. This process also involves collecting information from various web sources (HTML pages, RSS feeds, XML documents) into one database. The difference is that, as a result of grabbing, the user receives data in the same form as in the source, while parsing makes it possible to extract only the necessary information and present it in a different format.
The customer bears full responsibility, agreeing with the parsing of the donor's site data. The customer understands that receiving data by parsing may violate the user agreement on the provision of data. We, as developers, are not responsible because we do not work for harm, but for the benefit, because we believe that all data that does not constitute a trade secret should be distributed freely (with the provision of official access via API)