php if in echo code example

Example 1: if condition inside echo in php

echo '<option value="'.$value.'" '.(($value=='United States')?'selected="selected"':"").'>'.$value.'</option>';

Example 2: php if elseif

$a = random_int(0, 10);
$b = random_int(0, 10);
if ($a > $b) {
  echo 'a is greater than b';
} elseif ($a == $b) {
  echo 'a is equal to b';
} else {
  echo 'a is less than b';
}