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Building Web Applications in PHP Week 6 Practice Quiz Answer

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PHP Arrays

Question 1)
In PHP arrays can either be key / value (i.e. an associative array) or indexed by integers (i.e. a linear array).

• True
• False

Question 2)
Which symbol is used to associate a key to a value in an associative array?

• ->
• ==
• =>
• >>

Question 3)
Fill in the blank to echo ‘Arrays’

$stuff = array('course ' => 'PHP-Intro', 'topic' => 'Arrays');
echo ________;

• $stuff[‘Arrays’]
• $stuff[‘course’]
• $stuff[1]
• $stuff[‘topic’]

Question 4)
What is the output of

$stuff = array('course' => 'PHP-Intro', 'topic' => 'Arrays');
echo isset($stuff['section']);

• True
• There is no output
• 1
• 0
• False

Question 5)
In PHP you cannot make an array of associative arrays.

• True
• False

Question 6)
The [_____] function is used to rearrange an array in random order.

• SHUFFLE()

Question 7)
Which of these are built-in sorting functions provided by PHP?

• isort()
• ksort()
• sort()
• asort()

Question 8)
What function is used to sort the array in alphabetical order of the keys?

• ksort()

Question 9)
What function is used to sort the values in array and keep the keys intact?

• asort()

Question 10)
What function can be used to split a string into an array words based on a delimiter? For instance, create a three element array from the string ‘I am great!!!’.

• explode()

Question 11)
var_dump will display the name, key/value pairs, and data types of a variable.

• True
• False