What will be the output of the following PHP code?<br/>$number = array ("4", "hello", 2);<br/>echo (array_sum ($number));

PHP Arrays
What will be the output of the following PHP code?
$number = array ("4", "hello", 2);
echo (array_sum ($number));

4

2

4hello2

6

4

2

4hello2

6

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PHP Arrays
What will be the output of the following PHP code?
$a = array("red", "green", "blue");
array_pop($a);
print_r($a);

Array ( [0] => blue [1] => blue )

Array ( [0] => red [1] => blue )

Array ( [0] => green [1] => blue )

Array ( [0] => red [1] => green )

Array ( [0] => blue [1] => blue )

Array ( [0] => red [1] => blue )

Array ( [0] => green [1] => blue )

Array ( [0] => red [1] => green )

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PHP Arrays
What will be the output of the following PHP code?
$a1 = array("a" => "red", "b" => "green", "c" => "blue", "d" => "yellow");
$a2 = array("e" => "red", "f" => "green", "g" => "blue", "h" => "orange");
$a3 = array("i" => "orange");
$a4 = array_combine($a2, $a3);
$result = array_diff($a4, $a2);
print_r($result);

Array ( [h] => orange )

Array ( [d] => yellow [h] => orange )

Array ( [i] => orange )

Array ( [d] => yellow )

Array ( [h] => orange )

Array ( [d] => yellow [h] => orange )

Array ( [i] => orange )

Array ( [d] => yellow )

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PHP Arrays
Which function will return true if a variable is an array or false if it is not?

do_array()

in_array()

this_array()

is_array()

do_array()

in_array()

this_array()

is_array()

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PHP Arrays
Assume you would like to sort an array in ascending order by value while preserving key associations. Which of the following PHP sorting functions would you use?

sort()

asort()

krsort()

ksort()

usort()

sort()

asort()

krsort()

ksort()

usort()

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PHP Arrays
Array values are keyed by values (called indexed arrays) or using values (called associative arrays). Of course, these key methods can be combined as well.

Even number, string

Float, string

Positive number, negative number

String, Boolean

Integer, string

Even number, string

Float, string

Positive number, negative number

String, Boolean

Integer, string

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PHP Arrays

PHP Arrays What will be the output of the following PHP code?$number = array ("4", "hello", 2);echo (array_sum ($number));

PHP Arrays What will be the output of the following PHP code?$a = array("red", "green", "blue");array_pop($a);print_r($a);

PHP Arrays Which function will return true if a variable is an array or false if it is not?

PHP Arrays Assume you would like to sort an array in ascending order by value while preserving key associations. Which of the following PHP sorting functions would you use?

PHP Arrays Array values are keyed by ______ values (called indexed arrays) or using ______ values (called associative arrays). Of course, these key methods can be combined as well.

PHP Arrays
What will be the output of the following PHP code?
$number = array ("4", "hello", 2);
echo (array_sum ($number));

PHP Arrays
What will be the output of the following PHP code?
$a = array("red", "green", "blue");
array_pop($a);
print_r($a);

PHP Arrays
Which function will return true if a variable is an array or false if it is not?

PHP Arrays
Assume you would like to sort an array in ascending order by value while preserving key associations. Which of the following PHP sorting functions would you use?

PHP Arrays
Array values are keyed by values (called indexed arrays) or using values (called associative arrays). Of course, these key methods can be combined as well.