Explode only by last delimiter

Question

is there a way to use explode function to explode only by last delimiter occurrence?

$string = "one_two_  ... _three_four";

$explodeResultArray = e         


        

Answer 1

$explodeResultArray = explode("_", $string);
$last_item = end($explodeResultArray);
$key = count($explodeResultArray) - 1;
unset($explodeResultArray[$key]);
$arr[] = (implode($explodeResultArray,'_'));
$arr[] = $last_item;
print_r($arr);

Output

Array
(
    [0] => one_two_  ... _three
    [1] => four
)

Answer 2

For such a taks, you can just use strstr and strrchr:

$valueBeforeLastUnderscore = rtrim(strrev(strstr(strrev($value), '_')), '_');
$valueAfterLastUnderscore = ltrim(strrchr($value, '_'), '_');

That being said, I like the regular expression answer more.

Answer 3

There is no need for a workaround. explode() accepts a negative limit.

$string = "one_two_three_four";
$part   = implode('_', explode('_', $string, -1));
echo $part;

Result is

one_two_three

Answer 4

use end + explode

$explodeResultArray = end(explode("_", $string));

$explodeResultArray will = four

Answer 5

Use preg_match()

$string = "one_two_three_four";

$arr = array();
preg_match("/(^.*)_(.*?)$/", $string, $arr);

print_r($arr);

Output: Array ( [0] => one_two_three_four [1] => one_two_three [2] => four )

Answer 6

You could do the following:

$string = "one_two_three_four";
$explode = explode('_', $string); // split all parts

$end = '';
$begin = '';

if(count($explode) > 0){
    $end = array_pop($explode); // removes the last element, and returns it

    if(count($explode) > 0){
        $begin = implode('_', $explode); // glue the remaining pieces back together
    }
}

EDIT: array_shift should have been array_pop