Question

So I have this script that extracts a given string within a bigger string:

function get_string($string, $start, $end){
 $string = " ".$string;
 $pos = strpos($string,$start);
 if ($pos == 0) return "";
 $pos += strlen($start);
 $len = strpos($string,$end,$pos) - $pos;
 return substr($string,$pos,$len);
}

So this is the string:

$string= '<b>Sample Sample</b> <b>Sample2 Sample2</b>';

$output = get_string($string, '<b>','</b>');

echo $output;

I really want some help on this because I’m out of ideas. Now when i echo $output I get

Sample Sample

I want to make a change that would display both:

Sample Sample 

Sample2 Sample2

Does any of you guys have any ideas how to modify the function and make it output sort
of an array of results $output[0], $output[1]?

Thank you in advance,
Wish you a good day.

Answer 1

Modify your function so that as long as while, that function gives you a string, add it to an array, and run the function again with the end of the string.

EDIT:

Didn’t want to spell out a correct solution if you happened to want to try it your self. Here’s one way to do it, resulting in what you want. I tried to make as few changes to your original post as possible:

function get_string($string, $start, $end){
    $found = array();
    $pos = 0;
    while( true )
    {
        $pos = strpos($string, $start, $pos);
        if ($pos === false) { // Zero is not exactly equal to false...
            return $found;
        }
        $pos += strlen($start);
        $len = strpos($string, $end, $pos) - $pos;
        $found[] = substr($string, $pos, $len);
    }
}

$string = '<b>Sample Sample</b> <b>Sample2 Sample2</b>';

$output = get_string($string, '<b>','</b>');

var_dump( $output );

outputs:

array(2) {
  [0]=>
  string(13) "Sample Sample"
  [1]=>
  string(15) "Sample2 Sample2"
}