3v4l.org

run code in 300+ PHP versions simultaneously
<?php $template = "select emp.* from employee emp" . " join departments dep on emp.id_department = dep.id" . " @{where}" . " @{order}" . " limit :limit offset :offset"; echo $template; $pattern = '/[^\\$]\\@\\{(\\w+)\\}/'; preg_match_all($pattern, $template, $matches); var_dump($matches);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.30, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
select emp.* from employee emp join departments dep on emp.id_department = dep.id @{where} @{order} limit :limit offset :offsetarray(2) { [0]=> array(2) { [0]=> string(9) " @{where}" [1]=> string(9) " @{order}" } [1]=> array(2) { [0]=> string(5) "where" [1]=> string(5) "order" } }

preferences:
236.45 ms | 406 KiB | 399 Q