How to Explode String Right to Left?

Question

$split_point = \' - \';
$string = \'this is my - string - and more\';

How can i make a split using the second instance of $split_point and not the

Answer 1

I've stumbled uppon the same, and fixed it like so:

$split_point = ' - ';
$string = 'this is my - string - and more';

$reverse_explode = array_reverse(explode($split_point, $string));

Answer 2

this is my - string - and more

1. Use common explode function to get all strings
2. Get sizeof array and fetch last item
3. Pop last item using array_pop function.
4. Implode remaining string with same delimeter(if u want other delimeter can use).

Code

$arrSpits=explode("", "this is my - string - and more");
$arrSize=count($arrSpits);

echo "Last string".$arrSpits[arrSize-1];//Output: and more


array_pop(arrSpits); //now pop the last element from array

$firstString=implode("-", arrSpits);
echo "First String".firstString; //Output: this is my - string

Answer 3

Why not split on ' - ', but then join the first two array entries that you get back together?

Answer 4

How about this:

$parts = explode($split_point, $string);
$last = array_pop($parts);
$item = array(implode($split_point, $parts), $last);

Not going to win any golf awards, but it shows intent and works well, I think.

Answer 5

I liked Moff's answer, but I improved it by limiting the number of elements to 2 and re-reversing the array:

$split_point = ' - ';
$string = 'this is my - string - and more';

$result = array_reverse(array_map('strrev', explode($split_point, strrev($string),2)));

Then $result will be :

Array ( [0] => this is my - string [1] => and more )

Answer 6

Not sure why no one posted a working function with $limit support though here it is for those who know that they'll be using this frequently:

<?php
function explode_right($boundary, $string, $limit)
{
 return array_reverse(array_map('strrev', explode(strrev($boundary), strrev($string), $limit)));
}

$string = 'apple1orange1banana1cupuacu1cherimoya1mangosteen1durian';
echo $string.'<br /><pre>'.print_r(explode_right(1, $string, 3),1).'</pre>';
?>