$sName = mysql_real_escape_string($_REQUEST['sName']);
$datetime1 = mysql_real_escape_string( $_REQUEST['datetime1']);
$rain = mysql_real_escape_string( $_REQUEST['rain']);
$max = mysql_real_escape_string( $_REQUEST['max']);
$min = mysql_real_escape_string( $_REQUEST['min']);
$sql = "INSERT INTO rain(sName, datetime, rain, min, max) VALUES ('$sName', '$datetime1', '$rain','$max','$min')";
часть моего html кода
<p>
<label for="max">Maximum Temp:</label>
<input type="number" min="10.0" max="55.0" name="max" id="max" value="">
</p>
<p>
<label for="min">Minimum Temp:</label>
<input type="number" min="-3.0" max="40.0" name="min" id="min"value="">
</p>
<input type="submit" value="Submit">
<input type="reset" value="Clear">