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You need to filter and validate multiple inputs in your PHP script. How would you do this?

  • Use the appropriate filters and validation rules with the filter_input_array() function
  • Use the appropriate filters and validation rules with the filter_var_array() function
  • Implement custom validation logic in a loop with filter_input() or filter_var() functions
  • All of the above
To filter and validate multiple inputs in a PHP script, you can use the appropriate filters and validation rules with either the filter_input_array() function or the filter_var_array() function. Alternatively, you can implement custom validation logic in a loop using the filter_input() or filter_var() functions. All of the mentioned options are valid approaches to filter and validate multiple inputs in PHP. For more 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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Is it possible to use COM components in PHP?

  • Yes
  • No
  • Depends on the server configuration
  • Depends on the PHP version
Yes, it is possible to use COM (Component Object Model) components in PHP on Windows systems. PHP provides the COM extension that allows interaction with COM objects. However, it depends on the server configuration and the availability of the COM extension. Learn more: http://php.net/manual/en/book.com.php
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You are writing a PHP script and you need to access data that was submitted from a form using the POST method. How would you do this using a superglobal?

  • Use the $_POST superglobal.
  • Use the $_GET superglobal.
  • Use the $_SERVER superglobal.
  • Use the $_REQUEST superglobal.
The correct option is 1. To access data that was submitted from a form using the POST method in PHP, you would use the $_POST superglobal. When an HTML form is submitted with the POST method, the form data is available in the $_POST superglobal as an associative array. You can access specific form field values by referencing the corresponding keys within the $_POST array. This allows you to retrieve and process the submitted data in your PHP script. It is important to note that you should validate and sanitize the data obtained from $_POST to ensure security and prevent malicious input. Learn more: https://www.php.net/manual/en/reserved.variables.post.php
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What is a common use case for the $_REQUEST superglobal in PHP?

  • Retrieving form data submitted via both GET and POST methods.
  • Accessing session-related data.
  • Validating user input against a predefined list of values.
  • Storing and retrieving data from cookies.
A common use case for the $_REQUEST superglobal in PHP is to retrieve form data submitted via both GET and POST methods. When a form is submitted, the data is accessible through the $_REQUEST superglobal, regardless of the method used. This allows you to handle form submissions uniformly, regardless of whether the form used the GET or POST method. By accessing the appropriate keys within the $_REQUEST array, you can retrieve and process the form data. Learn more: https://www.php.net/manual/en/reserved.variables.request.php
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The filter_var() function is used to filter and validate data in PHP.

  • TRUE
  • FALSE
  • nan
  • nan
The filter_var() function in PHP is used to both filter and validate data. It offers a range of predefined filters to sanitize and validate different types of data, such as URLs, email addresses, numbers, and more. By applying appropriate filters, the filter_var() function ensures the integrity and security of the data. Refer to: http://php.net/manual/en/function.filter-var.php
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A constructor in a PHP class is defined using the __construct() method.

  • method
  • function
  • keyword
  • property
In PHP, a constructor in a class is defined using the __construct() method. The correct option is "method." The __construct() method is a special method that is automatically called when an object of the class is created. It is used to initialize the object's properties or perform any necessary setup tasks. For further details, refer to the PHP documentation on constructors: http://php.net/manual/en/language.oop5.decon.php
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In PHP, the ______ function is used to replace some characters in a string with some other characters.

  • str_replace()
  • replace()
  • substr_replace()
  • swap()
The str_replace() function in PHP is used to replace some characters in a string with some other characters. It performs a search and replace operation on a given string. It replaces all occurrences of the specified search string with the replacement string. Learn more: https://www.php.net/manual/en/function.str-replace.php
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In PHP, a function is defined with the function keyword, followed by a unique function name and a pair of _______ containing optional parameters.

  • braces
  • brackets
  • parentheses
  • curly brackets
The correct option is: "parentheses." In PHP, a function is defined using the function keyword, followed by the function name and a pair of parentheses. Within the parentheses, parameters can be defined to accept inputs for the function. Learn more: https://www.php.net/manual/en/functions.user-defined.php
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What function do you use in PHP to execute a query against a MySQL database?

  • mysqli_query()
  • mysql_query()
  • pdo_query()
  • execute_query()
In PHP, you can use the mysqli_query() function to execute a query against a MySQL database. This function takes two parameters: the connection object and the SQL query you want to execute. The SQL query can be any valid MySQL statement, such as SELECT, INSERT, UPDATE, or DELETE. The mysqli_query() function returns a result object for successful SELECT queries or a boolean value for other types of queries. It's important to use prepared statements or proper escaping techniques to prevent SQL injection vulnerabilities when executing user-supplied data as part of the query.
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A variable declared outside all functions in PHP is considered to have a ______ scope.

  • Local
  • Global
  • Static
  • Super
A variable declared outside all functions in PHP is considered to have a global scope. It means that the variable is accessible from anywhere in the PHP script, including inside functions. Global variables are defined outside of any function and can be accessed and modified throughout the entire script. However, it's generally recommended to use global variables sparingly and follow good programming practices to avoid potential issues related to variable scoping. Learn more: https://www.php.net/manual/en/language.variables.scope.php#language.variables.scope.global
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