<?php $buffer = '{"format": {"rule": ["matches","/^(0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])[- /.](19|20)\\d\\d$/"],"message":"Applications.submit_birthdate_format"}}'; var_dump(json_decode($buffer), json_last_error(), JSON_ERROR_SYNTAX);
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