- var_dump: documentation ( source)
<?php
function isCorrect($string) {
$string{strlen($string)-1};
}
var_dump('()'{strlen($string)-1});
//assert(isCorrect('') === true);
//assert(isCorrect('()') === true);
//assert(isCorrect('{()}') === true);
//assert(isCorrect('{()}{}') === true);
//assert(isCorrect('(())') === true);
//assert(isCorrect('{({({({()})})})}') === true);
//assert(isCorrect('{(})') === false);