| @@ 3655-3663 (lines=9) @@ | ||
| 3652 | * @return static | |
| 3653 | * <p>Object with all characters of $str being lowercase.</p> | |
| 3654 | */ | |
| 3655 | public function toLowerCase($tryToKeepStringLength = false, $lang = null): self | |
| 3656 |     { | |
| 3657 | return static::create( | |
| 3658 | $this->utf8::strtolower( | |
| 3659 | $this->str, | |
| 3660 | $this->encoding, | |
| 3661 | false, | |
| 3662 | $lang, | |
| 3663 | $tryToKeepStringLength | |
| 3664 | ), | |
| 3665 | $this->encoding | |
| 3666 | ); | |
| @@ 3787-3793 (lines=7) @@ | ||
| 3784 | * @return static | |
| 3785 | * <p>Object with all characters of $str being uppercase.</p> | |
| 3786 | */ | |
| 3787 | public function toUpperCase($tryToKeepStringLength = false, $lang = null): self | |
| 3788 |     { | |
| 3789 | return static::create( | |
| 3790 | $this->utf8::strtoupper($this->str, $this->encoding, false, $lang, $tryToKeepStringLength), | |
| 3791 | $this->encoding | |
| 3792 | ); | |
| 3793 | } | |
| 3794 | ||
| 3795 | /** | |
| 3796 | * Returns a string with whitespace removed from the start and end of the | |