preg_replace question

[osusano]

hi there i have this code

$strMsg = 'test hehehe :) what the heck :( hehe :)) wahhh :((';
$patterns = array("/:\)/si", "/:\)\)/si", "/:\(/si", "/:\(\(/si" ); 
$replaces = array(
"<img src='images/smiles/icon_smile.gif'>",
"<img src='images/smiles/icon_lol.gif'>",
"<img src='images/smiles/icon_frown.gif'>",
"<img src='images/smiles/icon_cry.gif'>"
); 
$outputMsg = preg_replace($patterns, $replaces, $strMsg); 
echo $outputMsg;

the 2 are working but i dont know why the other 2 is not working

i tried to make a message with 🙁( 🙂) but this dont work is there any idea why id dont display the correct value of image?

[bubblenut]

open brackets '(' are special characters as they start a sub-expression you have to escape them like so '(' you should really get into the habbit of doing that with the close brackets as well as this will cause some strange effects if you use on in the middle of a more complex regex (you'll enexpectedly close a sub-expression!!😕 )
HTH
Bubble

[daveyboy]

bit of a logic error here:

if you search and replace 🙁 before 🙁(, there won't be any 🙁( left! they will all be replaced with <img src='images/smiles/icon_frown.gif'>(.

put 🙁( before 🙁 and 🙂) before 🙂