If in Foreach Loop - php

Question

I followed a small tutorial and created a chat for a website. I added some features to it, and now individual chats can be saved but I'm not sure how to place an if statement inside the foreach loop. I would like to do something like this: if($chat_message->smgs_id != NULL) { something here } instead of <a class="save" href="#" id="'.$chat_message->id.'">Save</a>
$chat_messages_html = '<ul style="margin:10px;">';
foreach ($chat_messages->result() as $chat_message)
{
$chat_messages_html .= '<li>' . $chat_message->smsg_id . '<a class="save" href="#" id="'.$chat_message->id.'">Save</a> | </li>';
}
$chat_messages_html .= '</ul>';

Answer 1

Ternary for the win!
$html = '<ul>';
foreach ($arr as $val)
{
$html .= '<li>'. (NULL !== $val ? 'something' : 'something else') .'</li>';
}
$html .= '</ul>';

Answer 2

Split the assignment into parts so you can fit in the condition.
$chat_messages_html = '<ul style="margin:10px;">';
foreach ($chat_messages->result() as $chat_message)
{
$chat_messages_html .= '<li>';
if ($chat_message->smgs_id != NULL) {
$chat_messages_html .= '<a class="save" href="#" id="' . $chat_message->id . '">Save</a> | ';
}
$chat_messages_html .= '</li>';
}
$chat_messages_html .= '</ul>';

Answer 3

Try this:
$chat_messages_html = '<ul style="margin:10px;">';
foreach ($chat_messages->result() as $chat_message)
{
if ($chat_message->smgs_id != NULL) {
$chat_messages_html .= '<li>' . $chat_message->smsg_id . '<a class="save" href="#" id="'.$chat_message->id.'">Save</a> | </li>';
}
}
$chat_messages_html .= '</ul>';