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
What is the purpose of the json_encode() function in PHP?
- To encode a PHP object into a JSON string
- To decode a JSON string into a PHP object
- To encode a PHP object into a serialized string
- To decode a serialized string into a PHP object
The json_encode() function in PHP is used to encode a PHP object or array into a JSON string. JSON is a popular data interchange format, and this function allows you to convert PHP data into a JSON format that can be easily transmitted or stored. Learn more: http://php.net/manual/en/function.json-encode.php
To declare an associative array in PHP, you can use the array() function or the [] shorthand, and the keys are assigned ______.
- Sequentially starting from 0
- Alphabetically based on the element's value
- Based on the position of the element
- Explicitly by the programmer
To declare an associative array in PHP, you can use the array() function or the [] shorthand. When declaring an associative array, the keys are assigned explicitly by the programmer. Each key-value pair is defined within the array using the desired key and its corresponding value. The programmer has control over assigning meaningful keys to associate specific values. This allows for customized data organization and retrieval. Learn more: https://www.php.net/manual/en/language.types.array.php#language.types.array.syntax
Which function is used to close a file in PHP?
- close()
- fclose()
- end()
- finish()
In PHP, the fclose() function is used to close a file. It takes the file handle obtained from fopen() as its parameter. This function releases the resources associated with the file and frees up memory. It is a good practice to close files after you have finished working with them to ensure proper cleanup and prevent resource leaks.