Online PHP editor | refs for aPtSl

<?php $json = json_encode(array('phone_number' => '+123123'), JSON_PRETTY_PRINT); var_dump($json); $json = json_encode(array('phone_number' => '-123123'), JSON_NUMERIC_CHECK); var_dump($json); $json = json_encode(array('phone_number' => '1.2e3'), JSON_NUMERIC_CHECK); var_dump($json); $json = json_encode(array('phone_number' => '0.00001'), JSON_NUMERIC_CHECK); var_dump($json); $json = json_encode(array('phone_number' => '+a33123456789'), JSON_NUMERIC_CHECK); var_dump($json); $json = json_encode(array('phone_number' => 'a123'), JSON_NUMERIC_CHECK); var_dump($json); $json = json_encode(array('phone_number' => '0123'), JSON_NUMERIC_CHECK); var_dump($json);