wp_filesize( string $path ): int

3646function wp_filesize( $path ): int {3647	/**3648	 * Filters the result of wp_filesize() before the file_exists() PHP function is run.3649	 *3650	 * @since 6.0.03651	 * @since 7.1.0 Negative values are now ignored, being treated the same as null. Numeric values are cast to integers.3652	 *3653	 * @param null|int $size The unfiltered value. Returning a non-negative number from the callback bypasses the filesize call.3654	 * @param string   $path Path to the file.3655	 */3656	$size = apply_filters( 'pre_wp_filesize', null, $path );3657	if ( is_numeric( $size ) ) {3658		$size = (int) $size;3659	}3660	if ( is_int( $size ) && $size >= 0 ) {3661		return $size;3662	}3663 3664	$size = file_exists( $path ) ? (int) filesize( $path ) : 0;3665 3666	/**3667	 * Filters the size of the file.3668	 *3669	 * @since 6.0.03670	 * @since 7.1.0 The return value is now always zero or greater. Numeric values are cast to integers.3671	 *3672	 * @param int    $size The result of PHP filesize on the file.3673	 * @param string $path Path to the file.3674	 */3675	$size = apply_filters( 'wp_filesize', $size, $path );3676	if ( is_numeric( $size ) ) {3677		$size = (int) $size;3678	} else {3679		$size = 0;3680	}3681	return max( 0, $size );3682}
When	Instructions	Calls it makes
`is_int($size) && $size`	14–16	`apply_filters()`
`!file_exists()`	29–35	`apply_filters(), file_exists(), apply_filters()`
`file_exists()`	33–39	`apply_filters(), file_exists(), filesize(), apply_filters()`
PHP	Compiled	Executed	Branches	Notes
8.6-dev	42	14–39	5
8.5	42	14–39	5
8.4	42	14–39	5	7 fewer instructions than PHP 8.3
8.3	49	16–46	5
8.2	49	16–46	5
8.1	49	16–46	5	1 fewer instruction than PHP 7.4
7.4	50	16–47	5