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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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You have been asked to set up a local development environment for PHP. What steps would you take?

  • Install a text editor.
  • Install a software stack like WAMP (Windows), MAMP (macOS), or LAMP (Linux).
  • Create a new PHP file and save it with a .php extension in the web server's root directory.
  • All of the above.
Setting up a local development environment for PHP involves several steps. You would typically start by installing a text editor or IDE to write your PHP scripts. Then, you'd install a software stack like WAMP, MAMP, or LAMP, which includes a web server, a database system, and the PHP interpreter. Finally, you would create a new PHP file and save it in the web server's root directory. Learn more: https://www.php.net/manual/en/install.general.php
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How can you open a file in PHP?

  • open()
  • fopen()
  • read()
  • include()
In PHP, you can open a file using the fopen() function. This function takes the file path and mode as arguments and returns a file pointer that can be used for further file operations, such as reading or writing.
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In PHP, an array can only hold values of the same data type.

  • TRUE
  • FALSE
This statement is false. In PHP, an array can hold values of different data types. PHP allows you to store elements of different data types, such as integers, floats, strings, or even other arrays, within the same array variable. This flexibility makes arrays powerful and versatile for managing collections of related data. Learn more: https://www.php.net/manual/en/language.types.array.php
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You have a PHP script and you need to extend an abstract class. How would you do this?

  • class ChildClass
  • class ChildClass extends
  • class ChildClass inherits
  • class ChildClass from
To extend an abstract class in PHP, you can use the extends keyword followed by the name of the abstract class. For example: class ChildClass extends AbstractClass {} The extends keyword indicates that the child class inherits the properties and methods of the abstract class. The child class can provide its own implementations for abstract methods and can also override non-abstract methods if needed. By extending the abstract class, the child class inherits the structure and functionality defined in the abstract class. For more details, visit: http://php.net/manual/en/language.oop5.abstract.php
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How are variables in PHP declared?

  • Using let
  • Using var
  • Using $
  • Using declare
In PHP, variables are declared by preceding the variable name with a dollar sign ($). For example, $variable. PHP is a loosely typed language, which means that you don't have to declare the data type of a variable when you create it. Learn more: https://www.php.net/manual/en/language.variables.basics.php
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echo and print are functions in PHP.

  • TRUE
  • FALSE
This statement is false. Although echo and print are used as language constructs in PHP, they are not functions. They are language constructs provided by PHP for outputting content. The main difference is that echo has no return value, while print returns a value of 1. Both echo and print are used without parentheses and are not considered functions. Learn more: https://www.php.net/manual/en/function.echo.php https://www.php.net/manual/en/function.print.php
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Which of the following are true about the echo statement in PHP?

  • Echo does not have a return value.
  • Echo can output multiple parameters at once.
  • Echo is slightly faster and more efficient than print.
  • All of the above
All of the given options are true about the echo statement in PHP. Echo does not have a return value; it simply outputs the specified string(s). Echo can output multiple parameters at once, allowing you to concatenate multiple strings or variables together. Echo is slightly faster and more efficient than print, as it does not have a return value to handle. Learn more: https://www.php.net/manual/en/function.echo.php
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