How can I replace a variable in a string with the value in PHP?

I have string like this in database (the actual string contains 100s of word and 10s of variable):

I am a {$club} fan

I echo this string like this:

$club = "Barcelona";
echo $data_base[0]['body'];

My output is I am a {$club} fan. I want I am a Barcelona fan. How can I do this?

Answer

Use strtr. It will translate parts of a string.

$club = "Barcelona";
echo strtr($data_base[0]['body'], array('{$club}' => $club));

---

For multiple values (demo):

$data_base[0]['body'] = 'I am a {$club} fan.'; // Tests

$vars = array(
  '{$club}'       => 'Barcelona',
  '{$tag}'        => 'sometext',
  '{$anothertag}' => 'someothertext'
);

echo strtr($data_base[0]['body'], $vars);

Program Output:

I am a Barcelona fan.