$s = 'PHP is a <i>general-purpose</i> scripting language ' . "\n" .
'geared towards web <br>development. It was originally ' . "\n" .
'created by <br>Danish-Canadian <b>programmer Rasmus Lerdorf</b> in 1994';
$s = str_replace(array("<I>", "</i>", "<br>"), "", $s);
echo $s;
/*
run:
PHP is a general-purpose scripting language
geared towards web development. It was originally
created by Danish-Canadian <b>programmer Rasmus Lerdorf</b> in 1994
*/