Question

Suppose I have a string such as this:

ABC.DEF.GHI.JKL (This string could have any length and amount of characters between dots)

I want to add the following combinations into an array.
ABC
ABC.DEF
ABC.DEF.GHI
ABC.DEF.GHI.JKL

So basically the string should be split with the dot character and then the individual sub-strings should be combined.

I have a function already, but in my opinion this seems too complicated to achieve the result.

$myarray = array();
$split = explode('.', 'that.string.with.dots');
$string = '';
for ($i = 0; $i < count($split); $i++) {
    $string .= $split[$i];
    myarray[] = $string;
    $string .= '.';
}

Any suggestions on improving this?

Thanks
Michael

Answer 1

Perhaps this:

$split = explode('.', 'that.string.with.dots');
for ($i = 1; $i < count($split); $i++) {
    $split[i] = $split[$i-1] . '.' . $split[i];
}

It just concats the current with the previous.