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
How do PHP statements end?
- With a colon (:)
- With a comma (,)
- With a semicolon (;)
- With a period (.)
In PHP, statements end with a semicolon (;). The semicolon is a statement separator, allowing you to put multiple statements on the same line if desired. It's also necessary to end a statement before starting a new line with a new statement. Learn more: https://www.php.net/manual/en/language.basic-syntax.instruction-separation.php
You need to understand if a PHP class can have more than one constructor. What would be your conclusion?
- No
- Yes
- Depends on the PHP version
- Only if the class is abstract
In PHP, a class cannot have more than one constructor. The correct option is "No." Unlike some other programming languages, PHP does not support multiple constructors within a single class. However, you can achieve similar functionality by using optional parameters or method overloading. For further details, refer to the PHP documentation on constructors: http://php.net/manual/en/language.oop5.decon.php
What does $_ENV mean?
- An array of environment variables
- A global constant
- A reserved keyword
- A global function
In PHP, $_ENV is an array that contains the values of environment variables passed to the script. It provides access to environment-specific information. Learn more: http://php.net/manual/en/reserved.variables.environment.php
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
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