将 2 个 substr 和 1 strpos 合并在一行 php 中

Question

My string $podcast->title returns something like this :

Artist Name - The Title

I'm using the following 2 lines of code :

$this_dj = substr($podcast->title, 0, strpos($podcast->title, "-"));
$this_dj = substr($this_dj, 0, -1);

The first line strips everything after (and including the "-") which leaves me with :

Artist Name 

The second line removes the whitespace at the end.

My question is, can I combine these two lines into one line?

I've tried :

$this_dj = substr($podcast->title, 0, strpos($podcast->title, "-"), -1);

But that didn't work.

Answer 1

If your delimiter is always constant you can use explode , it's much easier, see example below.

$string = 'Artist Name - The Title';

$array = explode(' - ', $string);

print_r($array);

Will output

Array
(
    [0] => Artist Name
    [1] => The Title
)

And using list you can populate variables directly

list($artist,$song) = explode(' - ', $string);

print $artist . PHP_EOL;
print $song . PHP_EOL;

Which will output

Artist Name
The Title

No whitespace :)

Answer 2

使用trim()命令：

$this_dj = trim(substr($podcast->title, 0, strpos($podcast->title, "-")));

Answer 3

它也适用于您的示例，只需移动子字符串端点：

$this_dj = substr($podcast->title, 0, strpos($podcast->title, "-") - 1);