| public static substr ( $str, $begin, $len = null, $use_enc = null ) : mixed | ||
| $str | string. The original string | |
| $len | integer. How long the returned string should be. If $len is not set, the section of the string from $begin to the end of the string is returned. | |
| $use_enc | string. The encoding to be used. If not set, the internal encoding will be used. | |
| Результат | mixed | The section of the source string requested in the encoding requested or false. If $len is not set, returns substring from $begin to end of string. |
public static function substr($str, $begin, $len = null, $use_enc = null)
{
$enc = self::$hab_enc;
if ($use_enc !== null) {
$enc = $use_enc;
}
if (self::$use_library == self::USE_MBSTRING) {
if (!isset($len)) {
$len = MultiByte::strlen($str) - $begin;
}
$ret = mb_substr($str, $begin, $len, $enc);
} else {
$ret = substr($str, $begin, $len);
}
return $ret;
}