It is a function that ends the connection to the database.
select one:
a. mysql_close / mysqli_close
b. mysql_query / mysqli_query
c. mysql_connect / mysqli_connect
d. mysql_error / mysqli_error

a. mysql_close / mysqli_close

Explanation:

mysql_close/mysqli_close closes existing MySql connection.

Example usage:

<?php

$link = mysql_connect('localhost', 'userid', 'password');

// Close the connection reference $link

mysql_close($link);

?>

Mysqli represents an improved version of mysql driver.

<?php

$link = mysqli_connect('localhost', 'userid', 'password');

if ($link) {

   // Close the connection reference $link

   mysqli_close($link);

}

?>

assuming you are in the home page.

1) go to the upper right hand corner

2) click on your "profile picture"

3) go down to "edit profile"

4) it should be titled as "edit your profile", click on "profile picture"

5) choose a file

6) press "change"

you're profile picture is updated

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