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
91. How do you perform server-side form validation in CodeIgniter after submitting a form?
A. Using the form_validation library
B. Using JavaScript
C. By directly accessing the database
D. Using the form_validate function
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Answer: Using the form_validation library
92. What is the purpose of the form_error() function in CodeIgniter?
A. Retrieves validation error messages
B. Submits the form data
C. Clears form validation errors
D. Sets validation rules for form fields
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Answer: Retrieves validation error messages
93. How do you display form error messages in a CodeIgniter view file?
A. Using the validation_errors() function
B. Using the form_errors() function
C. Using the error_messages() function
D. Using the display_errors() function
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Answer: Using the validation_errors() function
94. What does the form_validation library return after running the validation rules?
A. A boolean value indicating whether validation passed or failed
B. An array of validation errors
C. The form submission status
D. The form data
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Answer: A boolean value indicating whether validation passed or failed
95. What method is used to set a custom error message for a specific form field in CodeIgniter?
A. set_field_error()
B. set_error_message()
C. custom_error_message()
D. set_error_field()
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Answer: set_field_error()
96. How can you load the CodeIgniter form helper to use form-related functions in a view file?
A. $this->load->helper('form');
B. $this->load->helper('form_helper');
C. $this->helper('form');
D. $this->helper('form_helper');
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Answer: $this->load->helper('form');
97. In CodeIgniter, how do you retrieve the user's input data from a submitted form?
A. Using the input class methods
B. Using the form_input function
C. Using the form array
D. Using the $_POST superglobal
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Answer: Using the input class methods
98. What are CodeIgniter Helpers?
A. Reusable functions
B. Database tables
C. Controller classes
D. CSS stylesheets
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Answer: Reusable functions
99. How can you load a CodeIgniter Helper?
A. $this->load->helper('helper_name');
B. $this->load->library('helper_name');
C. $this->helper('helper_name');
D. $this->library('helper_name');
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Answer: $this->load->helper('helper_name');
100. Which CodeIgniter Helper is commonly used for form creation and form-related tasks?
A. Form Helper
B. Database Helper
C. URL Helper
D. Array Helper
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Answer: Form Helper
