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<?php function interpolate($str, $data) { // /var/storage/images/strip/' .$hash . '/tn_' . $n . '.jpg'; array_walk($data, function($value, $key) use ($str) { $str = str_replace('{{' . $key . '}}', $value, $str); }); return $str; } $str = '/var/storage/images/strip/{{hash}}/tn_{{n}}.jpg'; echo interpolate($str, array('hash' => '0238de39s82u4d30238de39s82u4d3', 'n' => 1));

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