Connected successfully<br />
<b>Warning</b>:  Undefined array key "from" in <b>/home/miguelde/modulo4.migueldebarba.com.br/insertleitura.php</b> on line <b>16</b><br />
<br />
<b>Warning</b>:  Undefined array key "mac_idmac" in <b>/home/miguelde/modulo4.migueldebarba.com.br/insertleitura.php</b> on line <b>27</b><br />
<br />
<b>Warning</b>:  Undefined array key "valor" in <b>/home/miguelde/modulo4.migueldebarba.com.br/insertleitura.php</b> on line <b>29</b><br />
Connection error: SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'mac_idmac' cannot be null