multi line regular expression?

hi, i have a string that contains the following: $mystring=<<<EOS (((TITLE))) *color* == this is where the content goes it can spreed many lines ... == EOS; i'm using this line of code to try and get the content between == and == preg_match_all("|==(.+)==|",$mystring,$contents,PREG_PATTERN_ORDER); now, if i do a print_r($contents); the thing is empty. but if i put the content of my original variable all on one line (== line 1 _ line 2 _ line 3 _==), it works fine. is there something to get around this one line limit? Thanks for your time and have a nice day Tim