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PHP PHP Arrays and Control Structures PHP Arrays Modifying Arrays

Posted by Ray Thomas
Ray Thomas
12,478 Points

simple php array manipulation help

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

Why doesn't my code pass?

Thanks.

index.php 
<?php

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

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

unset($colors[1]);
$colors[1] = "Magenta";
unset($colors[3]);
$colors[3] = "Cyan";

1 Answer

Sean T. Unwin
Sean T. Unwin
28,690 Points
Sean T. Unwin
Sean T. Unwin
28,690 Points

While your way will work, we can use the PHP function splice() which essentially does what you wrote but in one-line.

So instead of 

<?php

unset($colors[1]);
$colors[1] = "Magenta";

We would write

<?php

 array_splice($colors,1,1,"Magenta");

Where the format is array_splice([Array], [Index to Start for Removal], [Number of Items to Remove], [Replacement Value]).

Ray Thomas
Ray Thomas
12,478 Points

Thank you, Sean! I was expecting to use the same functions outlined in the video just before this assessment. You're the man!

Sean T. Unwin
Sean T. Unwin
28,690 Points
Sean T. Unwin
Sean T. Unwin
28,690 Points

My pleasure, Ray!

Happy coding. :smile: