Remove string after last hyphen [duplicate]

Answer 1

This is a little bulky but it will work for you:

$str = 'sdfsdf-sdfsdf-abcde';
$pieces = explode("-",$str);
$count = count($pieces);

for ($x = 0; $x <= $count - 2; $x++) {
   $desired_result .= $pieces[$x].'-';
} 
$desired_result = substr($desired_result, 0, -1);

echo $desired_result;

if you have a lot of them you can use this function:

function removeLast($str){
    $pieces = explode("-",$str);
    $count = count($pieces);

    for ($x = 0; $x <= $count - 2; $x++) {
       $desired_result .= $pieces[$x].'-';
    } 
    $desired_result = substr($desired_result, 0, -1);

    return $desired_result;
}

you call it by:

$str = 'sdfsdf-sdfsdf-abcde';
$my_result = removeLast($str);

Answer 2

You can use strrpos to get the last index, and then use substr to get the desired result.

$str = 'sdfsdf-sdfsdf-abcde';
$pos = strrpos($str , "-");
if ($pos !== false) {
   echo substr($str, 0, $pos);
}

Answer 3

You can use this preg_replace:

$repl = preg_replace('/-[^-]*$/', '', $str);
//=> sdfsdf-sdfsdf

-[^-]*$ will match - followed by 0 or more non-hyphen characters before end of line.

Answer 4

You're close. Just use array_pop() instead of array_shift(). array_pop() removes last element of array. You need, of course, use implode() later to put the strign together again.

$arr = explode('-', $str);
array_pop($arr);
$str = implode('-', $arr);

It's important not to do that in one line since array_pop() works on a reference to the array and it modfies it, and then returns only removed element.

There are a few other possible solutions mentions by other answers.