Question

Say I have an array:

$before = array(1,2,3,3,4,4,4,5)

How would I remove just one occurence of eg ‘3’ ?

$after = array(1,2,3,4,4,4,5)

(I don’t know where in the array that number will be)

Answer 1

You can use a variety of methods, depending on what exactly you’re trying to do:

• Find the index using array_search() and then unset() it.
• If you know the index, use array_splice() to replace it with nothing.
• Use array_filter() with a custom callback.