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PHP

Vijay Ramdass
Vijay Ramdass
13,275 Points
Posted by Vijay Ramdass
Vijay Ramdass
13,275 Points

PHP - Modifying Arrays Quiz (Question 2)

Without setting the entire array directly, change the element value of "Red" to "Magenta" and the element value of "Blue" to "Cyan".

I am getting this error: Bummer! The array does not contain the correct elements.

I did a var_dump and everything seems to be in order. Here is my code:

<?php

$colors = array("Red","Green","Blue");

//add modifications below this line

array_unshift($colors, "Yellow"); array_push($colors, "Black");

array_shift($colors); $colors[0] = "Magenta";

array_pop($colors); $colors[2] = "Cyan";

var_dump($colors);

11 Answers

Samuel Jih
Samuel Jih
8,344 Points

Got it! It's because we added Yellow and Black, so now we need to target index 1 and 3! :)

Waldo Alvarado
Waldo Alvarado
16,322 Points
Waldo Alvarado
Waldo Alvarado
16,322 Points

Remember, the index value of Red and Blue increased by one because you added Yellow to the beginning of the array.

$colors = array("Red","Green","Blue");

//add modifications below this line
array_unshift($colors, "Yellow");
array_push($colors, "Black");

$colors[1] = "Magenta";
$colors[3] = "Cyan";
Joy Manuel
Joy Manuel
6,464 Points

This is starting to make sense. I was going as far as looking up splicing. Just need to remind myself to keep it simple.

Vijay Ramdass
Vijay Ramdass
13,275 Points
Vijay Ramdass
Vijay Ramdass
13,275 Points

Thank you for your reply. The unshift and push at the beginning for colors Black, and Yellow.

That is the answer I originally had, however with that I am getting this error:

Bummer! Change the element with the value "Red" to the value "Magenta"

Jeff Reeve4
Jeff Reeve4
8,535 Points

I'm on to the third part of the question where we need to remove the value green. I think unset($colors, 2); should do this but I keep getting the following error.

Oops! It looks like Task 1 is no longer passing

Vijay Ramdass
Vijay Ramdass
13,275 Points
Vijay Ramdass
Vijay Ramdass
13,275 Points

Close! Try doing it this way:

Unset($array[key]);

Will Anderson
Will Anderson
28,683 Points

Here's my code that passes step 1 and 2. The 2 '$colors' lines are step 2. Note that the index has changed as we did add an element to the top in step 1. <?php

$colors = array("Red","Green","Blue"); //add modifications below this line array_unshift($colors, "Yellow"); array_push($colors, "Black"); $colors[1] = "Magenta"; $colors[3] = "Cyan";

?>

Jonathan Morton
Jonathan Morton
7,942 Points

$colors[1]="Magenta"; $colors[3]="Cyan";

Christian Andersson
Christian Andersson
8,712 Points
Christian Andersson
Christian Andersson
8,712 Points

Not sure why you're doing all these shifts and unshifts, but here's the easiest way to do this:

$colors = array("Red","Green","Blue");
//add modifications below this line
$colors[0] = "Magenta";
$colors[2] = "Cyan";
John Ireland
John Ireland
6,585 Points
John Ireland
John Ireland
6,585 Points

The first challenge has you adding things to the array, therefore changing the index. if you change that to

$colors[1] = 'Magenta'; $colors[3] = 'Cyan';

.....you're good to go.

Bruce Migeri
Bruce Migeri
2,675 Points

Well we need to be aware that the index values for "Red" has shifted from 0 to 1 and that of "Blue" from 2 to 3. This is because we have attached string "Yellow" to the front, index 0.

Jeff Reeve4
Jeff Reeve4
8,535 Points
Jeff Reeve4
Jeff Reeve4
8,535 Points

Thanks Vijay - schoolboy error that one!

Matthew Costigan
Matthew Costigan
18,319 Points
Matthew Costigan
Matthew Costigan
18,319 Points

Help!

<?php

$colors = array("Red","Green","Blue"); array_push($colors, "Black"); array_unshift($colors, "Yellow");

//add modifications below this line $colors[0] = "Magenta"; $colors[2] = "Cyan";

Can't understand why this is not passing ! and getting the error Bummer! Change the element with the value "Red" to the value "Magenta"

Anne Donald
Anne Donald
9,847 Points
Anne Donald
Anne Donald
9,847 Points

Thank you, I was struggling with this!

Jacob Khan
Jacob Khan
12,273 Points
Jacob Khan
Jacob Khan
12,273 Points 
<?php

$colors = array("Red","Green","Blue");

//add modifications below this line
array_unshift($colors, 'Yellow');
array_push($colors, 'Black');

$colors[1] = "Magenta";
$colors[3] = "Cyan";

var_dump($colors);
Alan Sebastian
Alan Sebastian
5,666 Points
Alan Sebastian
Alan Sebastian
5,666 Points

$colors[1] = "Magenta"; $colors[3] = "Cyan";

Masango Dewheretsoko
Masango Dewheretsoko
19,661 Points
Masango Dewheretsoko
Masango Dewheretsoko
19,661 Points

Hie Vjay Ramdas, here is the correct answer for both challenge 1 and 2 from Masango Dewheretsoko

<?php

$colors = array("Red","Green","Blue");

//add modifications below this line

array_unshift($colors,'Yellow'); array_push($colors,'Black'); $colors[1] = "Magenta"; $colors[3] = "Cyan"; ?>

natapol chanpradab
natapol chanpradab
3,190 Points
natapol chanpradab
natapol chanpradab
3,190 Points

$colors = array("Red","Green","Blue"); array_push($colors,'Black'); array_unshift($colors,'Yellow');

$replacements = array(1 => "Magenta", 3 => "Cyan"); $colors = array_replace($colors, $replacements);