遇到一个非常简单的PHP数组问题

Question

All I need to two is remove the final two elements from an array, which only contains 3 elements, output those two removed elements and then output the non-removed element. I'm having trouble removing the two elements, as well as keeping their keys.

My code is here http://pastebin.com/baV4fMxs

It is currently outputting : Java Perl Array

I want it to output: [One] => Perl and [Two] => Java [Zero] => PHP

Answer 1

$last=array_splice($inputarray,-1);
//$last has now key=>value of last element

$middle=array_splice($inputarray,-1);
//$middle has now key=>value of middle element

//$inputarray has now only key=>value of first element

Answer 2

You mentioned keys, so I assume it's an associative array. In order to remove an element, you can call the unset function, like this:

unset ($my_array['my_key'])

Do this for both elements that you want to remove.

Answer 3

array_pop will do it for you quite easily:

$array = array( 'one', 'two', 'three');

$last = array_pop( $array); echo $last . "\n";
$second = array_pop( $array); echo $second . "\n";
echo $array[0];

Output:

three
two
one

Demo

Answer 4

It seems to me that you want to retrieve those two values being removed before getting rid of them. With this in mind, I suggest the use of array_pop() which simultaneously returns the last item in the array and removes it from the array.

$val = array_pop($my_array);
echo $val; // Last value
$val = array_pop($my_array);
echo $val; // Middle value
// Now, $my_array has only the first value