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<?php $invalid = '{"test":"foo}'; $valid = '[]'; try { json_decode($invalid, true); // this fails silently json_decode($valid, true, 512, JSON_THROW_ON_ERROR); // Which is what Safe does to check if it needs to throw an exception if (json_last_error() !== JSON_ERROR_NONE) { var_dump('With the flag', json_last_error_msg()); } json_decode($valid, true); // Which is what Safe does to check if it needs to throw an exception if (json_last_error() !== JSON_ERROR_NONE) { var_dump('Without the flag', json_last_error_msg()); } } catch (Throwable $e) { echo 'This should not even be triggered: ' . $e->getMessage() . PHP_EOL; }
Output for git.master, git.master_jit, rfc.property-hooks
string(13) "With the flag" string(53) "Control character error, possibly incorrectly encoded"

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