[hello][/hello]

gistfile1.php

<?php

function count_nested_shortcodes( $shortcode ) {
	// each shortcode uses the "[" chatacter twice. The first is of the opening tag, the last is for the closing tag. 
	// The main shortcode also has 2 occurances. Since we're looking for the nested shortcodes, we'll ignore the main one by subtracting 2 from the total outcome
	return (int) ( substr_count( $shortcode, '[' ) / 2 ) - 2;
}

looks good, can you add comments please ?

why are we ignoring the first one? we are looking for the max depth of the array so can we add the The RecursiveIteratorIterator class for example and just spit out the array's depth ?

Maor take a look let me know what did I do wrong :(

$max_depth) { $max_depth = $depth; } } } return $max_depth; } ``` ?>