- str_replace: documentation ( source)
<?php
$string = "{uuid}/{filename}";
$data = array("uuid" => "derp", "filename" => "foo");
foreach ($data as $key => $val){
echo "{".$key."}".PHP_EOL;
echo $val.PHP_EOL;
$string = str_replace("{".$key."}", $val, $string);
}
echo $string;