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10 tutorials
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9 tutorials
Chapter 6: Hooks and Events
Course
4 tutorials
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Chapter 7: Plugins
Course
3 tutorials
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Chapter 8: Forms
Course
7 tutorials
Chapter 9: Working with Data
Course
16 tutorials
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Chapter 10: Caching
Course
3 tutorials
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Chapter 11: Testing
Course
5 tutorials
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4 tutorials
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2 tutorials
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Chapter 14: Final Thoughts
Course
1 tutorials
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6 tutorials
Automated Testing in Drupal
Course
6 tutorials
4 tutorials
5 tutorials
Test Custom Code
Guide
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Performance and scalability determine how fast your application can serve a page and to how many users at a time.
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Twig is a template engine for PHP, which is the language used in Drupal. Twig can be used to design templates in generic PHP applications as well as Drupal themes.
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PHP namespaces provide a way in which to group related classes, interfaces, functions and constants. Drupal uses PSR-4 namespaces to autoload the correct PHP class from a file, accommodating variations in site structures.