IdnaEncoder::to_ascii( string $text ): string

85	public static function to_ascii($text) {86		// Step 1: Check if the text is already ASCII87		if (self::is_ascii($text)) {88			// Skip to step 789			if (strlen($text) < self::MAX_LENGTH) {90				return $text;91			}92 93			throw new Exception('Provided string is too long', 'idna.provided_too_long', $text);94		}95 96		// Step 2: nameprep97		$text = self::nameprep($text);98 99		// Step 3: UseSTD3ASCIIRules is false, continue100		// Step 4: Check if it's ASCII now101		if (self::is_ascii($text)) {102			// Skip to step 7103			/*104			 * As the `nameprep()` method returns the original string, this code will never be reached until105			 * that method is properly implemented.106			 */107			// @codeCoverageIgnoreStart108			if (strlen($text) < self::MAX_LENGTH) {109				return $text;110			}111 112			throw new Exception('Prepared string is too long', 'idna.prepared_too_long', $text);113			// @codeCoverageIgnoreEnd114		}115 116		// Step 5: Check ACE prefix117		if (strpos($text, self::ACE_PREFIX) === 0) {118			throw new Exception('Provided string begins with ACE prefix', 'idna.provided_is_prefixed', $text);119		}120 121		// Step 6: Encode with Punycode122		$text = self::punycode_encode($text);123 124		// Step 7: Prepend ACE prefix125		$text = self::ACE_PREFIX . $text;126 127		// Step 8: Check size128		if (strlen($text) < self::MAX_LENGTH) {129			return $text;130		}131 132		throw new Exception('Encoded string is too long', 'idna.encoded_too_long', $text);133	}