/**
* Returns the number of occurrences of $substring in the given string.
* By default, the comparison is case-sensitive, but can be made insensitive
* by setting $caseSensitive to false.
*
* @param string $substring The substring to search for
* @param bool $caseSensitive Whether or not to enforce case-sensitivity
*
* @return int The number of $substring occurrences
*/
public function countSubstr($substring, $caseSensitive = true)
{
if ($caseSensitive) {
return UTF8::substr_count($this->str, $substring, 0, null, $this->encoding);
}
$str = UTF8::strtoupper($this->str, $this->encoding);
$substring = UTF8::strtoupper($substring, $this->encoding);
return UTF8::substr_count($str, $substring, 0, null, $this->encoding);
}