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PHP

Conditionals

if, elseif, and else work the same as most C-family languages — each block wrapped in curly braces, condition in parentheses.

Example: a time-of-day greeting

<?php
  $hour = 14;

  if ($hour < 12) {
    echo "Good morning";
  } elseif ($hour < 18) {
    echo "Good afternoon";
  } else {
    echo "Good evening";
  }
?>
Good afternoon

Note the spelling: PHP uses elseif as one word (though else if as two words also works) — a small but real difference from JavaScript's else if, worth knowing so it doesn't trip you up switching between languages.

Example
<?php
  $hour = 14;

  if ($hour < 12) {
    echo "Good morning";
  } elseif ($hour < 18) {
    echo "Good afternoon";
  } else {
    echo "Good evening";
  }
?>
Output
Good afternoon
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