<?php
$str = '[{"lat":-2.1581795660883976,"lng":-79.90096002817154},{"lat":-2.171559596852916,"lng":-79.9018183350563},{"lat":-2.176448424731824,"lng":-79.89057451486588},{"lat":-2.1662419064644722,"lng":-79.88053232431412},{"lat":-2.156206859267206,"lng":-79.8930636048317},{"lat":-2.15835110569104,"lng":-79.90164667367935}]';
var_dump(json_decode($str));
preferences:
25.09 ms | 405 KiB | 5 Q