How to make the code below to display none if no image?
protected function DisplayPhoto($Sender) { $body = $Sender->EventArguments['Discussion']->Body; preg_match('#\<img(.+?)src=(.+?)\>#s', $body, $matches); $image = "src=" . $matches[2]; echo '<img class="ProfilePhotoSmall"' . $image . '>'; } Try this:
protected function DisplayPhoto($Sender) { $body = $Sender->EventArguments['Discussion']->Body; preg_match('#\<img(.+?)src=(.+?)\>#s', $body, $matches); if(isset($matches[2])){ $image = "src=" . $matches[2]; echo '<img class="ProfilePhotoSmall"' . $image . '>'; }else{ //do what you want } } I'd probably do something along the lines of:
if (count($matches) == 0){ //do whatever if no image is here }else{ //do whatever if there IS an image } 
protected function DisplayPhoto($Sender) { $body = $Sender->EventArguments['Discussion']->Body; preg_match('#\<img(.+?)src=(.+?)\>#s', $body, $matches); $image = "src=" . $matches[2]; if( strlen( $matches[2] ) > 0 ){ echo '<img class="ProfilePhotoSmall"' . $image . '>'; } Try changing the code to:
protected function DisplayPhoto($Sender) { $body = $Sender->EventArguments['Discussion']->Body; preg_match('#\<img(.+?)src=(.+?)\>#s', $body, $matches); $image = "src=" . $matches[2]; if(!(strlen( $matches[2] ) > 0)){ echo '<img class="ProfilePhotoSmall"' . $image . '>'; } } If (strcmp($image,"src=")!=0) #print whatever you want If $matches[2] your $images contain only "src=". If $images only contains "src=" than do nothing,else print whatever you want.
