What PHP function can be used to format a date?
- date_format()
- format_date()
- date()
- strftime()
The strftime() function can be used to format a date and time according to a specified format string. For more information, refer to: http://php.net/manual/en/function.strftime.php
How can you encode a PHP array into a JSON object?
- json_encode()
- json_serialize()
- json_convert()
- All of the above
To encode a PHP array into a JSON object, you can use the json_encode() function. It converts a PHP value (such as an array) into its JSON representation. The other mentioned options (json_serialize(), json_convert()) are not valid PHP functions for encoding an array into a JSON object. For further details, refer to the PHP documentation on json_encode(): http://php.net/manual/en/function.json-encode.php
Which of the following are ways to access a global variable inside a function in PHP?
- Use the global keyword followed by the variable name inside the function.
- Pass the global variable as a parameter to the function.
- Access the variable directly without any special keyword or parameter passing.
- All of the above
All of the given options are valid ways to access a global variable inside a function in PHP. You can use the global keyword followed by the variable name inside the function to indicate that you want to work with the global variable. Alternatively, you can pass the global variable as a parameter to the function. Additionally, global variables can be accessed directly from within the function without any special keyword or parameter passing. Learn more: https://www.php.net/manual/en/language.variables.scope.php#language.variables.scope.global
To delete a cookie in PHP, you can use the setcookie() function with an expiration date in the ______.
- past
- future
- present
- distant
To delete a cookie in PHP, you can use the setcookie() function and set the expiration date in the past. This causes the browser to discard the cookie, effectively deleting it. Additional information: http://php.net/manual/en/function.setcookie.php
What is the continue statement used for in PHP?
- Skipping the remaining code in the current iteration of a loop
- Resuming the next iteration of a loop
- Breaking out of a switch statement
- Terminating the execution of a function
The correct option is: "Resuming the next iteration of a loop." In PHP, the continue statement is used to skip the remaining code in the current iteration of a loop and move on to the next iteration. It is commonly used when you want to skip certain iterations based on a condition. Learn more: https://www.php.net/manual/en/control-structures.continue.php
You cannot modify global variables using the $GLOBALS superglobal in PHP.
- FALSE
- TRUE
The correct option is 2. You can modify global variables using the $GLOBALS superglobal in PHP. The $GLOBALS array provides references to all global variables, allowing you to retrieve their values and modify them directly. By accessing specific elements using their names as keys in the $GLOBALS array, you can update the values of global variables from anywhere within the script. However, it is generally recommended to use caution when modifying global variables, as excessive reliance on them can lead to code complexity and potential issues. It is often preferable to utilize other techniques, such as passing variables as function parameters or using object-oriented design principles, to achieve better code organization and maintainability. Learn more: https://www.php.net/manual/en/reserved.variables.globals.php
Which of the following are common uses of indexed arrays in PHP?
- Storing a collection of user input values.
- Tracking session data for multiple users.
- Iterating over a list of items.
- All of the above.
The correct option is 4. Indexed arrays in PHP have several common uses, including storing a collection of user input values, tracking session data for multiple users, and iterating over a list of items. Indexed arrays provide a convenient way to store and retrieve multiple values sequentially. They are often used when the order of elements and easy access by position are important. Learn more: https://www.php.net/manual/en/language.types.array.php#language.types.array.syntax
How can you include a file in PHP?
- import()
- include_once()
- require()
- attach()
In PHP, you can include a file using the require() statement, which includes and evaluates the specified file during runtime. This allows you to reuse code from other files in your current PHP script.
You have a PHP script and you need to create an object from a class. How would you do this?
- Using the new keyword and the class name
- Using the create() function and the class name
- Using the instanceof keyword and the class name
- Using the object() function and the class name
In PHP, to create an object from a class, you would use the new keyword followed by the class name and parentheses. The correct option is "Using the new keyword and the class name." For more information, consult the PHP documentation on creating objects: http://php.net/manual/en/language.oop5.php
What is the $GLOBALS superglobal in PHP?
- An array containing references to all variables that are currently defined in the global scope of the script.
- A variable that stores global values for a PHP script.
- A special function for accessing global variables.
- A reserved keyword for declaring global variables.
The correct option is 1. The $GLOBALS superglobal in PHP is an associative array that contains references to all variables that are currently defined in the global scope of the script. The keys of the $GLOBALS array are the variable names, and the values are references to the corresponding variables. It provides a way to access global variables from anywhere within the script, including within functions or classes, without having to use the global keyword. By accessing the $GLOBALS superglobal, you can retrieve and manipulate global variables as needed. However, it is generally recommended to use global variables sparingly and follow good coding practices to avoid potential issues. Learn more: https://www.php.net/manual/en/reserved.variables.globals.php