In PHP, $GLOBALS is a superglobal array that contains references to all ______ that are currently defined in the global scope of the script.

  • Global variables
  • Local variables
  • Static variables
  • Super variables
The correct option is 1. In PHP, the $GLOBALS superglobal is an associative array that contains references to all global variables that are currently defined in the global scope of the script. It provides a way to access and manipulate these global variables from anywhere within the script. The keys of the $GLOBALS array correspond to the variable names, and the values are references to the corresponding variables. By accessing specific elements using their names as keys in the $GLOBALS array, you can retrieve or modify the values of global variables. It is important to note that using global variables extensively can lead to code complexity and potential issues, so it is recommended to use them judiciously and consider alternative approaches for better code organization and maintainability. Learn more: https://www.php.net/manual/en/reserved.variables.globals.php

The if statement in PHP can only test one condition.

  • TRUE
  • FALSE
  • nan
  • nan
The if statement in PHP can test multiple conditions. You can use logical operators such as && (AND) and

In PHP, a string can contain letters, numbers, and special characters.

  • TRUE
  • FALSE
This statement is true. In PHP, a string can contain letters, numbers, special characters, and even control characters. It is a versatile data type used for storing and manipulating text or sequences of characters. Strings can be enclosed in single quotes (''), double quotes ("") or heredoc/nowdoc syntax. Learn more: https://www.php.net/manual/en/language.types.string.php

Unlike variables, constants in PHP are automatically ______.

  • Initialized
  • Finalized
  • Declared
  • Assigned
Unlike variables, constants in PHP are automatically declared. Once defined using the define() function, constants are available throughout the script without the need for additional declaration statements. They are immediately ready for use. On the other hand, variables need to be explicitly declared using the $ sign before they can be used. This automatic declaration of constants makes them easily accessible and convenient to use in PHP scripts. Learn more: https://www.php.net/manual/en/language.constants.php

If the mysqli_query function returns false, it means the query execution failed. You can get the error message using the mysqli_error function like echo "Error creating table: " . mysqli_error(______).

  • $conn
  • $result
  • $mysqli_connection
  • $query
If the mysqli_query function returns false, it means the query execution failed. To get the error message, you can use the mysqli_error function. It takes the connection object ($conn) as a parameter and returns the error message associated with the most recently executed query. You can display the error message using echo, for example: "Error creating table: " . mysqli_error($conn). This helps in troubleshooting and identifying any issues that occurred during the query execution. Ensure you have a successful connection and have executed a query before checking for errors.

What are some potential issues you might encounter when using FTP functions in PHP?

  • Connection failures, authentication issues, file transfer errors
  • Incorrect usage, lack of input validation
  • PHP version compatibility, server disk space limitations
  • All of the above
When using FTP functions in PHP, you might encounter potential issues such as connection failures, authentication problems, or file transfer errors. Connection failures can occur due to network issues, server unavailability, or incorrect FTP server settings. Authentication issues may arise if the provided credentials are incorrect or if the FTP server has strict authentication requirements. File transfer errors can happen if the remote file does not exist, the local file is not readable, or if there are restrictions on file permissions. It's important to handle these issues by validating input, checking return values, and implementing error handling mechanisms to ensure successful FTP operations in PHP.

A variable declared within a function in PHP has a ______ scope.

  • Local
  • Global
  • Static
  • Dynamic
A variable declared within a function in PHP has a local scope. It means that the variable is only accessible within that specific function. It cannot be accessed outside of the function or in other functions. This helps in encapsulation and prevents naming conflicts with other variables in different functions. Learn more: https://www.php.net/manual/en/language.variables.scope.php

You need to execute a block of code in your PHP script for an unknown number of times, but the block of code needs to be executed at least once even if the condition is false. How would you do this using a do...while loop?

  • Write the code block and then use the do keyword followed by the while keyword and the condition
  • Write the code block and then use the while keyword followed by the do keyword and the condition
  • Write the code block and then use the while keyword followed by the condition
  • Write the code block and then use the do keyword followed by the condition
To execute a block of code in PHP for an unknown number of times, but at least once even if the condition is false, you can use a do...while loop. The structure of a do...while loop is to write the code block first, followed by the do keyword, and then the while keyword along with the condition. The code block will always execute at least once before the condition is checked. If the condition is true, the loop will continue executing. If the condition is false, the loop will terminate. This ensures that the code block is executed at least once regardless of the condition. Learn more: https://www.php.net/manual/en/control-structures.do.while.php

In PHP, a boolean data type can hold one of two values: ______ or ______.

  • TRUE
  • FALSE
  • 0
  • 1
In PHP, a boolean data type can hold one of two values: true or false. Boolean values are used to represent logical states and are often used in conditional statements or to indicate the success or failure of an operation. The value true represents a true or positive condition, while the value false represents a false or negative condition. Learn more: https://www.php.net/manual/en/language.types.boolean.php

You can use the $_GET superglobal in PHP to get data sent via the POST method from a form.

  • TRUE
  • FALSE
The statement is false. The $_GET superglobal is specifically used to retrieve data sent via the GET method, not the POST method. To access data sent via the POST method from a form, you would use the $_POST superglobal. The $_GET superglobal retrieves data from the URL's query string, whereas the $_POST superglobal retrieves data sent through an HTML form using the POST method. Learn more: https://www.php.net/manual/en/reserved.variables.get.php, https://www.php.net/manual/en/reserved.variables.post.php