PHP Mysql how to Count $row['price']

[impressiveone]

Dear Friends,

With reference to below code, I want to count the variable $total.

total = 0;
while($row = mysqli_fetch_array($result)){
$price= $row['price'];
$total += $price;
}
echo 'total: ', $total;

I can find the sum as you can see in the code but I also want to count. 

I can do this in Sql query. But want to do in While loop. It's because Sql query would require me to use CASE which I do not want to use for some reasons. First I want to create another variable of prices higher than 10 and then mark them Red. This I can do with if. But I want to count this new variable with Red prices thst is greater than 10.

[Barand]

An if() statement comes in useful at time lke this

[ginerjm]

So you add a counter that checks the price during each iteration.  That's not much different than getting the total of prices.

But you say you want to mark it in red?  What do you mean since you aren't outputting anything?

[impressiveone]

Thanks ginergm: 

I will make the code Red marks and paste here and request you for help.

 

First, I want to count below variable.

I can't get the counter code to work.

My try below:

$total = 0;
$price_counts = array();
while($row = mysqli_fetch_array($result)){
    $price= $row['price'];
    $total += $price;
    if (isset($price_counts[$price])) {
        $price_counts[$price]++;
    } else {
        $price_counts[$price] = 1;
    }
}
echo $total; //To do sum
echo "<br>";
echo $price_counts; // To count how many prices in record.

 

Can u help?

Edited October 1, 2018 by impressiveone

[ginerjm]

I don't understand what you are trying to count.  You are building an array of the different prices you find and counting how many of EACH UNIQUE price value you have.  What is the purpose of counting how many $1.09 and $1.10 and $1.99 you have?   I thought you were looking for ALL the prices that exceeded a certain amount?

[Barand]

I'm guessing here, but from the various bits of your posts, you want to list the prices. Those less than 10 should be in red and you want a count of them. Is that close?

$total = 0;
$belowten = 0;;
while($row = mysqli_fetch_array($result)){
    $total += $row['price'];
    if ($row['price'] < 10.00) {
        ++$belowten;
        printf("<span style='color: red'>%20.2f</span><br>", $row['price']);
    }
    else printf("%20.2f<br>", $row['price']);
}
printf("<br>Total: %13.2f<br><br>", $total); 
echo "There were $belowten prices less than 10.00: <br>"; 

Sample output

 

[impressiveone]

@Barand: Sir you have made my day. 

 

I will test this and let you know. You have almost solved my problem.

 

Actually, I want a count of all prices not Red ones. Like there are total 5 prices.

Will get back to you after testing.

 

Thanks a lot

Edited October 2, 2018 by impressiveone

[impressiveone]

@Barand: Actually, I want a count of all prices not Red ones. Like there are total 5 prices from your example above.

[Barand]

Tricky - that means you have to move a line of code;

[impressiveone]

@Barand: 

 

I tried this, but no luck:

 

$total = 0;
$belowten = 0;

$CountPrices = 0;

while($row = mysqli_fetch_array($result)){
    $total += $row['price'];
    if ($row['price'] < 10.00) {
        ++$belowten;
        printf("<span style='color: red'>%20.2f</span><br>", $row['price']);
    }
    else printf("%20.2f<br>", $row['price']);
}

++$CountPrices;

printf("<br>Total: %13.2f<br><br>", $total); 

echo "Total number of Prices in record: $CountPrices <br>"; 

[impressiveone]

Similarly I also want to echo maximum price that is 15.5

[Barand]

You need to accumulate the count inside the loop, not just increment it once after the loop finishes

$total = 0;
$CountPrices = 0;
$maxprice = 0;

while($row = mysqli_fetch_array($result)){
    $total += $row['price'];
    if ($row['price'] < 10.00) {
        printf("<span style='color: red'>%20.2f</span><br>", $row['price']);
    }
    else printf("%20.2f<br>", $row['price']);
    
    ++$CountPrices;                                                    // needs to be inside the loop
    $maxprice = max($maxprice, $row['price']);                         // check for max price;
}



printf("<br>Total: %13.2f<br><br>", $total); 

echo "Total number of Prices in record: $CountPrices <br>"; ?>

echo "Highest price was " . number_format($maxprice, 2);

 

[maxxd]

As patient and helpful as @Barand and @ginerjm have been through this conversation, I feel like we're slipping into @benanamen specialty, the XY problem. What are you actually trying to accomplish? It seems like the same question has been answered several times already, only to be met with new and slightly different requirements.

[impressiveone]

I tried to look for this solution first. It's so disappointing that someone has come up to help me and I'm receiving these comments.

Is it like I have done something illegal or committed a crime? - It is a learning platform for beginners like me and if seniors do not cooperate, then how will this learning expand to the world.

I don't know why I see too much selfishness increasing as compared to 10 years ago. People really used to be very helpful on online forums. But now, they treat beginners too harsh :(

I express my heartiest gratitude to @Barand & ginerjm for their support to a beginner like. Believe me: My PHP Development Diploma never taught me these techniques. These institutes only teach simple basics. All the technical things that we learn, come from seniors like you.

[impressiveone]

Western Union??

Edited October 3, 2018 by impressiveone

[ginerjm]

Your last post was so un-helpful.   Even your whining isn't clear to me.  Is that a new problem you want us to address?

You were asked to step back from your 'problem' and tell us in English what you want to do.  The issue has gone from counting prices that were greater than something to counting every single different price to coloring them in Red, etc. etc. etc.

We can't solve a moving target so how about choosing one and giving us the full explanation?

Basically your issue seems to be you don't know how to use a loop to accomplish what you want.  Perhaps you need to read up loops?

 

[impressiveone]

@ginerjm : Many thanks.

I went through the loops again and followed the post of @Barand.

Special thanks to @Barand. He is a real guru who understood what I wanted and provided good help.

My problem is solved now