indexing php error, undefined offset

[mj777]

Errors:
Notice: Undefined offset: 2 in short_codes_functions.php on line 132
Notice: Undefined offset: 3 in short_codes_functions.php on line 132

code line from 128 to 139

if (!function_exists('adforest_extarct_link')) {

function adforest_extarct_link($string) {
$arr = explode('|', $string);
list($url, $title, $target, $rel) = $arr;
$rel = urldecode(adforest_themeGetExplode($rel, ':', '1'));
$url = urldecode(adforest_themeGetExplode($url, ':', '1'));
$title = urldecode(adforest_themeGetExplode($title, ':', '1'));
$target = urldecode(adforest_themeGetExplode($target, ':', '1'));
return array("url" => $url, "title" => $title, "target" => $target, "rel" => $rel);
}
}

please solve any one as soon as possible
thank you

[dev7060]

list($url, $title, $target, $rel) = $arr;

list expects aleast 4 parameters.

$arr = explode('|', $string);

Right side is returning an array of less than 4 values.

Either ensure explode('|', $string) returns the minimum required number of values or pad the array to the required length using array_pad()