Online PHP editor | refs for W06CV

<?php $content = <<<INI_ISH [chorus] And all will surely agree, There's nothing like PHP. [1] It may not be the best way, But it isn't going away. [2] When you don't appear to hack it, Check for a closing bracket. [bridge] Oh, if you don't like this ode, Then please don't look at my code. INI_ISH; preg_match_all( '#^\[([^\]])[^\]]*\]\R\K(?:(?!^\[).)*$#ms', $content, $m ); $map = array_combine($m[1], $m[0]); $map[','] = "\n\n"; $sequence = '1,c,2,c,b,1,c'; echo strtr($sequence, $map);