$ sign has a special meaning so to insert a literal dollar you need to either quote it or escape it:
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PHP (from the English Hypertext Preprocessor - hypertext preprocessor) is a scripting programming language for developing web applications. Supported by most hosting providers, it is one of the most popular tools for creating dynamic websites.
The PHP scripting language has gained wide popularity due to its processing speed, simplicity, cross-platform, functionality and distribution of source codes under its own license.
Symfony compares favorably with other PHP frameworks in terms of reliability and maturity. This framework appeared a long time ago, in 2005, that is, it has existed much longer than most of the other tools we are considering. It is popular for its web standards compliance and PHP design patterns.
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