/**
* UTF-8 aware replacement for stripos().
*
* Returns the position of the first occurrence of $sub in the $str. If $sub
* is not found, it returns false.
*
* This will get alot slower if an negative $offset is used.
*
* This function may return boolean false, but may also return a non-boolean 0
* which evaluates to false. Use the === operator for testing the return value
* of this function.
*
* @param string $str The string to search in
* @param string $sub The string to search for
* @param int $offset If presented, it specifies the position in the string
* to begin the search
* @return int The position or false on failure
*/
function utf8_isearch($str, $sub, $offset = 0)
{
return utf8_search($str, $sub, $offset, true);
}
/**
* @dataProvider providerFailingUtf8ISearch
*/
public function testFailingUtf8ISearchReturnValue($str, $sub, $offset)
{
$this->assertFalse(@utf8_search($str, $sub, $offset));
}
