CodeIgniter is a powerful and lightweight open-source PHP framework renowned for its simplicity and speed in web application development. With a focus on minimal configuration and a straightforward yet comprehensive toolkit, CodeIgniter empowers developers to build robust and scalable web applications efficiently. Its Model-View-Controller (MVC) architecture enhances code organization, making it easy to create maintainable and modular applications. CodeIgniter also offers a rich set of libraries and helpers, enabling rapid development and customization. Whether you're a novice or an experienced developer, CodeIgniter is an excellent choice for crafting dynamic and high-performance web solutions.
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Practice Test
81. What does the :any wildcard represent in a CodeIgniter route?
A. Matches any character except for the slash (/)
B. Matches any single character
C. Matches any numeric value
D. Matches any string
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Answer: Matches any character except for the slash (/)
82. In CodeIgniter routing, how do you define a route with a parameter?
A. $route['product/(:num)'] = 'catalog/product_lookup/$1';
B. $route['product/{id}'] = 'catalog/product_lookup/$1';
C. $route['product/{:num}'] = 'catalog/product_lookup/$1';
D. $route['product/{:id}'] = 'catalog/product_lookup/$1';
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Answer: $route['product/(:num)'] = 'catalog/product_lookup/$1';
83. What is the purpose of the :any and :num wildcard patterns in CodeIgniter routes?
A. :any matches any character segment, and :num matches numeric segments
B. :any matches only letters, and :num matches numbers
C. :any matches all segments, and :num matches single characters
D. :any matches numeric segments, and :num matches any character segment
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Answer: :any matches any character segment, and :num matches numeric segments
84. How do you create a route that maps to a controller in a subdirectory in CodeIgniter?
A. $route['subdir/controller/method'] = 'subdir/controller/method';
B. $route['controller/method'] = 'subdir/controller/method';
C. $route['subdir/controller/method'] = 'controller/method';
D. $route['subdir/method'] = 'controller/method';
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Answer: $route['subdir/controller/method'] = 'subdir/controller/method';
85. What happens when a URL doesn't match any defined route in CodeIgniter?
A. CodeIgniter throws a 404 Page Not Found error
B. CodeIgniter redirects to the default controller
C. CodeIgniter generates a 500 Internal Server Error
D. CodeIgniter displays a blank page
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Answer: CodeIgniter throws a 404 Page Not Found error
86. What does the uri_protocol configuration setting in CodeIgniter's routing file determine?
A. The method used for detecting the URI in the request
B. The format of the database connection string
C. The type of encryption used for cookies
D. The session handling protocol
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Answer: The method used for detecting the URI in the request
87. How do you enable the removal of the "index.php" segment from URLs in CodeIgniter?
A. By configuring the .htaccess file
B. By setting enable_query_strings to TRUE
C. By specifying the default route
D. By using the remove_index parameter in the base_url function
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Answer: By configuring the .htaccess file
88. How can you create a form opening tag in a CodeIgniter view file?
A. echo form_open('controller/method');
B. echo form_start('controller/method');
C. echo form('controller/method');
D. echo form_create('controller/method');
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Answer: echo form_open('controller/method');
89. Which CodeIgniter library is used for form validation?
A. Form Validation Library
B. Input Library
C. Database Library
D. Session Library
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Answer: Form Validation Library
90. In CodeIgniter form validation, what does the set_rules() method do?
A. Sets validation rules for form fields
B. Submits the form data
C. Retrieves form field values
D. Clears form validation errors
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Answer: Sets validation rules for form fields
