Conditional mysqli date range check to print a price in sql - php

Question

This time I'm trying to make some php code to work with mysqli in order to check if today date is between a range of dates in a Mysql table, if the condition is true I need to print a price from a table otherwise it shuould print a different price from another table. so I already have all sql connections set in another php file, the problem is that when I try the code, it just shows nothing, a blank page only. This is the code im using:
<?php
$currentdate = date("Y/m/d");
//basic include files
require_once('/home/user/public_html/folder/db.php');
$seasonalpricedate = mysqli_query($conn, "SELECT `seasonal_price` FROM `hotel_seasonal_price` WHERE room_type_id = '1' AND $currentdate >= 'seasonal_from' AND $currentdate <= 'seasonal_to';");
$result = ($seasonalpricedate) or die(mysqli_error());
if (mysqli_num_rows($result) != 0) {
$standardprice = mysqli_query($conn, "SELECT `room_price` FROM `hotel_room_price` WHERE price_id = '1'");
if(! $standardprice ){
die('Could not get data: ' . mysqli_error());
}
while($standard = mysqli_fetch_array($standardprice, MYSQL_ASSOC)){
echo "$ {$standard['room_price']} ";
}
} else {
if(! $seasonalpricedate ){
die('Could not get data: ' . mysqli_error());
while($standard2 = mysqli_fetch_array($seasonalpricedate, MYSQL_ASSOC)){
echo "$ {$standard2['seasonal_price']} ";
}
}
}
?>
I already tried both codes with standardprice and seasonalprice working without a conditional, but when I try to do it like this, it does not show anything.
PostData: Im still trying to learn english, so please appologize me if I fail some words, thanks in Advance.
UPDATE: Ok so in this way it works if there is no values true its ok, it shows the standardprice, but if match the date, dont show anything, here is the code changed:
<?php
error_reporting(E_ALL);
ini_set('error_reporting', E_ALL);
$currentdate = date("Y-m-d");
//basic include files
require_once('/home/trankilo/public_html/book/db.php');
$seasonalpricedate = mysqli_query($conn, "SELECT `seasonal_price` FROM `hotel_seasonal_price` WHERE room_type_id = '1' AND '$currentdate' >= seasonal_from AND '$currentdate' <= seasonal_to");
$result = ($seasonalpricedate) or die(mysqli_error());
if (mysqli_num_rows($result) != 0) {
$seasonalprice = mysqli_query($conn, "SELECT `seasonal_price` FROM `hotel_seasonal_price` WHERE room_type_id = '1'");
if(! $seasonalprice )
{
die('Could not get data: ' . mysqli_error());
while($standard2 = mysqli_fetch_array($seasonalprice, MYSQL_ASSOC))
{
echo "$ {$standard2['seasonal_price']} ";
}
}
} else {
$standardprice = mysqli_query($conn, "SELECT `room_price` FROM `hotel_room_price` WHERE price_id = '1'");
if(! $standardprice )
{
die('Could not get data: ' . mysqli_error());
}
while($standard = mysqli_fetch_array($standardprice, MYSQL_ASSOC))
{
echo "$ {$standard['room_price']} ";
}
}
mysqli_close($conn);
?>
So close to make it work, thanks to

Answer 1

UPDATE: Because you are also updated your OP, now i found what causes the problem. Ther proble were when you says: die('Could not get data: ' . mysqli_error()); And after that you want to try a while loop. while won't executed, because you terminated the script with a die(); Move the while to the else case of your if condition. See my comments.
Use this:
error_reporting(E_ALL);
ini_set('error_reporting', E_ALL);
//Also display your errors.
display_errors(true);
$currentdate = date("Y-m-d");
//basic include files
require_once('/home/trankilo/public_html/book/db.php');
//Put your query into a variable, so you can dump / print it.
$sql = "SELECT `seasonal_price`"
. " FROM `hotel_seasonal_price`"
. " WHERE room_type_id = '1'"
. " AND '" . $currentdate . "' >= seasonal_from"
. " AND '" . $currentdate . "' <= 'seasonal_to'";
echo $sql;
//Try to run it in the sql directly. Is it gives back you any result?
//Do not need to
$result = mysqli_query($conn, $sql) or die(mysqli_error());
if (mysqli_num_rows($result) != 0) {
//Check if we have result by echoing some dummy text
echo "Yes, we have result!";
$sql = "SELECT `seasonal_price` FROM `hotel_seasonal_price` WHERE room_type_id = '1'";
//Do the same as the previous query. Does it gives you back anything?
$seasonalprice = mysqli_query($conn, $sql);
if (!$seasonalprice) {
//I do not really get what happens here. If you have no seasonalprice,
//then you can not fetch_array on that!
//Move this whole section.... You've say die, and after that do a while?
die('Could not get data: ' . mysqli_error());
} else {
while ($standard2 = mysqli_fetch_assoc($seasonalprice)) {
echo "$ " . $standard2['seasonal_price'] . " ";
}
}
} else {
//Same as previous
$sql = "SELECT `room_price` FROM `hotel_room_price` WHERE price_id = '1'";
$standardprice = mysqli_query($conn, $sql);
if (!$standardprice) {
die('Could not get data: ' . mysqli_error());
//same here, move the while to the else...
} else {
while ($standard = mysqli_fetch_array($standardprice, MYSQL_ASSOC)) {
echo "$ {$standard['room_price']} ";
}
}
}
mysqli_close($conn);