5 Questions
How do you define a function in PHP?
function functionName(parameters) {function body}
What is the output of the following PHP code: $x = 3; $y = 5; $z = $x + $y; echo $z;
15
Which superglobal variable is used to collect form data sent with both the GET and POST methods?
$_REQUEST
What does isEven(5) return?
false
Which PHP function is used to connect to a MySQL database?
mysqli_connect()
Study Notes
Defining a Function in PHP
- To define a function in PHP, use the syntax:
function functionName(parameters) {function body}
PHP Code Output
- The output of the given PHP code is not specified, as the code is not provided
Collecting Form Data in PHP
- The
$_REQUESTsuperglobal variable is used to collect form data sent with both the GET and POST methods
PHP Function Return Values
- The
isEven($num)function returns a boolean value (true or false) indicating whether the input number is even -
isEven(5)would returnfalsebecause 5 is an odd number
Connecting to a MySQL Database in PHP
- To connect to a MySQL database in PHP, use the
mysqli_connect()function (recommended) ormysql_connect()function (deprecated)
Test your knowledge of PHP programming concepts, including function definition, variable usage, and form data collection.
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