ed in PHP 8.5.
	 *
	 * Returns the first element of an array.
	 *
	 * @since 6.9.0
	 *
	 * @param array $array The array to get the first element from.
	 * @return mixed|null The first element of the array, or null if the array is empty.
	 */
	function array_first( array $array ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.arrayFound
		if ( empty( $array ) ) {
			return null;
		}

		foreach ( $array as $value ) {
			return $value;
		}
	}
}

if ( ! function_exists( 'array_last' ) ) {
	/**
	 * Polyfill for `array_last()` function added in PHP 8.5.
	 *
	 * Returns the last element of an array.
	 *
	 * @since 6.9.0
	 *
	 * @param array $array The array to get the last element from.
	 * @return mixed|null The last element of the array, or null if the array is empty.
	 */
	function array_last( array $array ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.arrayFound
		if ( empty( $array ) ) {
			return null;
		}

		return $array[ array_key_last( $array ) ];
	}
}

// IMAGETYPE_AVIF constant is only defined in PHP 8.x or later.
if ( ! defined( 'IMAGETYPE_AVIF' ) ) {
	define( 'IMAGETYPE_AVIF', 19 );
}

// IMG_AVIF constant is only defined in PHP 8.x or later.
if ( ! defined( 'IMG_AVIF' ) ) {
	define( 'IMG_AVIF', IMAGETYPE_AVIF );
}

// IMAGETYPE_HEIF constant is only defined in PHP 8.5 or later.
if ( ! defined( 'IMAGETYPE_HEIF' ) ) {
	define( 'IMAGETYPE_HEIF', 20 );
}