function create_safe_string($string, $separator = META_DEFAULT_WORDS_SEPARATOR, $word_length = META_DEFAULT_WORD_LENGTH)
{
if (empty($separator)) {
$separator = ' ';
}
$string = trim(strip_tags($string));
$string = trim(preg_replace('#[^\\p{L}\\p{N}]+#u', ' ', $string));
$string = preg_replace('/\\s\\s+/', ' ', $string);
if ($word_length > 1) {
$words_array = explode($separator, $string);
if (is_array($words_array)) {
for ($i = 0, $j = count($words_array); $i < $j; $i++) {
$char_size = tep_utf8_size($words_array[$i]);
$word_size = $word_length * $char_size;
if (strlen($words_array[$i]) < $word_size) {
unset($words_array[$i]);
}
}
if (count($words_array)) {
$string = implode($separator, $words_array);
}
}
}
return $string;
}
function create_safe_description($string, $max_length = META_MAX_DESCRIPTION, $open_tag = '<p>', $close_tag = '</p>')
{
$string = trim(strip_tags($string, $open_tag));
$open_pos = strpos($string, $open_tag);
$close_pos = strpos($string, $close_tag);
if ($open_pos !== false && $close_pos !== false && $close_pos > $open_pos) {
$open_pos += strlen($open_tag);
//$close_pos -= strlen($close_tag);
$final_string = substr($string, $open_pos, $close_pos - $open_pos);
} else {
$final_string = strip_tags($string);
}
$char_size = tep_utf8_size($final_string);
$max_length *= $char_size;
if (strlen($final_string) > $max_length) {
$final_string = substr($final_string, 0, $max_length);
}
return $final_string;
}
function tep_string_length($string)
{
$size = tep_utf8_size($string);
$length = (int) (strlen($string) / $size);
return $length;
}
