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In PHP, a class is the ______ from which individual objects are created.

  • Blueprint
  • Prototype
  • Instance
  • Model
In PHP, a class is the blueprint from which individual objects are created. It defines the structure, properties, and methods that objects of that class will have. The correct option is "Blueprint." A class provides the template or blueprint for creating objects, which are instances of that class. The other mentioned options (Prototype, Instance, Model) are related to objects but do not specifically refer to the class itself. For further details, refer to the PHP documentation on classes and objects: http://php.net/manual/en/language.oop5.php
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What are some potential issues you might encounter when using mail functions in PHP?

  • Email delivery issues, spam filtering, SMTP server configuration problems
  • PHP version compatibility, server disk space limitations
  • Network connectivity issues, database table name conflicts
  • All of the above
When using mail functions in PHP, you might encounter potential issues such as email delivery problems, spam filtering, and SMTP server configuration problems. Email delivery issues can occur due to factors like incorrect recipient addresses, server blacklisting, or misconfigured DNS records. Spam filters may mark legitimate emails as spam, impacting email deliverability. SMTP server configuration problems, including incorrect server settings or authentication issues, can also hinder email sending. It's important to address these issues by properly configuring SMTP servers, ensuring valid recipient addresses, and following best practices to improve email deliverability.
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In PHP, $_POST is a superglobal array that is used to collect form data after submitting an HTML form with ______ as the method.

  • GET
  • POST
  • PUT
  • DELETE
In PHP, $_POST is a superglobal array that is used to collect form data after submitting an HTML form with POST as the method. The POST method sends form data in the body of the HTTP request, making it suitable for handling sensitive information or large amounts of data. When the form is submitted, the data is accessible through the $_POST superglobal. Learn more: https://www.php.net/manual/en/reserved.variables.post.php
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How do you execute a PHP script from the command line?

  • Run the command php script.php
  • Use the execute script.php command
  • Type run script.php
  • Execute the script.php command
To execute a PHP script from the command line, you can use the command php script.php, where script.php is the name of your PHP file. This command runs the PHP interpreter, reads and executes the code in the specified file. It allows you to run PHP scripts outside of a web server environment, enabling command-line applications or batch processing tasks.
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You are writing a PHP script and you need to filter multiple inputs. How would you do this?

  • Use the filter_input_array() function with the appropriate filters and input types
  • Use the filter_var_array() function with the appropriate filters and input types
  • Loop through the input values and apply the desired filters and validations individually
  • All of the above
To filter multiple inputs in a PHP script, you can use either the filter_input_array() function or the filter_var_array() function. Both functions allow you to specify the filters and input types to apply to the multiple inputs. You can loop through the input values and apply the desired filters and validations individually as well. All of the mentioned options are valid approaches to filter multiple inputs in PHP. For further details, refer to the PHP documentation on filter_input_array() (http://php.net/manual/en/function.filter-input-array.php) and filter_var_array() (http://php.net/manual/en/function.filter-var-array.php).
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Which of the following are valid ways to add comments to PHP code?

  • // This is a comment
  • # This is a comment
  • /* This is a comment */
  • All of the above
PHP supports different ways to add comments. Single-line comments can be denoted with double slashes (//) or a hash symbol (#) at the beginning of a line. Multi-line comments can be enclosed between /* and */. All of the provided options are valid ways to add comments to PHP code. Learn more: https://www.php.net/manual/en/language.basic-syntax.comments.php
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To access an element of an indexed array in PHP, you use the name of the array followed by the ______ of the element in square brackets.

  • Key
  • Index
  • Value
  • Identifier
To access an element of an indexed array in PHP, you use the name of the array followed by the index of the element in square brackets. The index represents the numeric key associated with the element. For example, to access the first element of an indexed array, you would use the index 0. To access the second element, you would use the index 1, and so on. By specifying the index within the square brackets ([]), you can retrieve the corresponding element. Learn more: https://www.php.net/manual/en/language.types.array.php#language.types.array.syntax
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In PHP, you can define an interface using the interface keyword like interface InterfaceName { ______ }.

  • public methods and properties
  • abstract methods and properties
  • private methods and properties
  • static methods and properties
In PHP, to define an interface, you can indeed use the interface keyword followed by the name of the interface. For example: interface InterfaceName { } An interface contains method signatures without implementation and can also define constants. Interfaces establish a contract that classes must adhere to when implementing the interface. Classes that implement an interface must provide an implementation for all the methods defined in the interface. To learn more about interfaces in PHP, refer to: http://php.net/manual/en/language.oop5.interfaces.php
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You've written a PHP script, but it's not executing correctly. You suspect there's a syntax error. How would you go about debugging this?

  • Run the script with a PHP interpreter and look for error messages.
  • Check the PHP error log file.
  • Use a PHP linter to check for syntax errors.
  • All of the above.
PHP offers several ways to debug scripts. Running the script with a PHP interpreter can reveal error messages that can help identify the problem. PHP also maintains an error log file that you can check for errors. Furthermore, using a PHP linter or a similar code checking tool can help identify syntax errors in your script. Learn more: https://www.php.net/manual/en/book.errorfunc.php
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How can you filter multiple inputs in PHP?

  • filter_var()
  • sanitize_input()
  • validate_input()
  • filter_input_array()
The filter_input_array() function in PHP is used to filter multiple inputs at once. It takes an input array and applies a specified filter to each element of the array. To learn more, refer to: http://php.net/manual/en/function.filter-input-array.php
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