PHP regex templating - find all occurrences of {{var}}

Question

I need some help with creating a regex for my php script. Basically, I have an associative array containing my data, and I want to use preg_replace to replace some place-ho

Answer 1

Use preg_replace_callback(). It's incredibly useful for this kind of thing.

$replace_values = array(
  'test' => 'test two',
);
$result = preg_replace_callback('!\{\{(\w+)\}\}!', 'replace_value', $input);

function replace_value($matches) {
  global $replace_values;
  return $replace_values[$matches[1]];
}

Basically this says find all occurrences of {{...}} containing word characters and replace that value with the value from a lookup table (being the global $replace_values).