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PHP MySQL multiple mysql_num_rows in one query

Posted on 2009-04-07
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Last Modified: 2013-12-12
I have a MySQL table that I need to generate reports from.  One column is called reason_code.  There are over 100 possible reason codes in the table.  I need to generate a report that tells me how many records  are in the table for each reason_code value.  

I know how to find the number of records for one reason code, but don't know how to do this for over 100 reason codes, without running 100 querries.  Please help me simplify my code below.  The code below shows a separate query for each reason code.  What I want is one querry that assigns the number of records to a variable for all reason codes in the table.  The following code works, but it is a killer script if I have to write a separate query for each reason code type.
$query = sprintf("SELECT amount, card_type FROM pdf_made_cb WHERE mid = '$mid' AND receive_date >= '$date1' AND receive_date <= '$date2' AND amount >= $amt1 AND amount <= $amt2 AND reason_code = 'Code 1' ");
$rs_v_c = mysql_query($query, $connect_crm) or die(mysql_error());
$rca1 = mysql_num_rows($rs_v_c);
 
$query = sprintf("SELECT amount FROM pdf_made_cb WHERE mid = '$mid' AND receive_date >= '$date1' AND receive_date <= '$date2' AND amount >= $amt1 AND amount <= $amt2 AND reason_code = 'Code 2' ");
$rs_v_c = mysql_query($query, $connect_crm) or die(mysql_error());
$rca2 = mysql_num_rows($rs_v_c);
 
$query_rs_v_c = sprintf("SELECT amount FROM pdf_made_cb WHERE  mid = '$mid' AND receive_date >= '$date1' AND receive_date <= '$date2' AND amount >= $amt1 AND amount <= $amt2 AND reason_code = 'Code 3' ");
$rs_v_c = mysql_query($query, $connect_crm) or die(mysql_error());
$rca3 = mysql_num_rows($rs_v_c);
 
$query = sprintf("SELECT amount FROM pdf_made_cb WHERE mid = '$mid' AND receive_date >= '$date1' AND receive_date <= '$date2' AND amount >= $amt1 AND amount <= $amt2 AND reason_code = 'Code 4' ");
$rs_v_c = mysql_query($query, $connect_crm) or die(mysql_error());
$rca4 = mysql_num_rows($rs_v_c);

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Question by:fastfind1
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Assisted Solution

by:Guy Hengel [angelIII / a3]
Guy Hengel [angelIII / a3] earned 50 total points
ID: 24084839
something this would do:
$query = sprintf("SELECT reason_code, count(*) rows, sum(amount) sum_amount FROM pdf_made_cb WHERE mid = '$mid' AND receive_date >= '$date1' AND receive_date <= '$date2' AND amount >= $amt1 AND amount <= $amt2 group by reason_code ");
$rs_v_c = mysql_query($query, $connect_crm) or die(mysql_error());
$rca1 = mysql_num_rows($rs_v_c);

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Expert Comment

by:bleach77
ID: 24084946
try this.
$query_rs_v_c = sprintf("SELECT reason_code, count(amount) AS amount FROM pdf_made_cb WHERE  mid = '$mid' AND receive_date >= '$date1' AND receive_date <= '$date2' AND amount >= $amt1 AND amount <= $amt2 GROUP BY reason_code");
$rs_v_c = mysql_query($query, $connect_crm) or die(mysql_error());
 
$code = array();
 
while ($row = mysql_fetch_assoc($rs_v_c)) {
   $code["$row['reason_code']"] = $row['amount'];
}  

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Author Comment

by:fastfind1
ID: 24084949
Thank you for your help.  I need to assign a variable to each count of records for each reason code.  So if reason code 1 had 4 records, I need to assign $rca = 4.  If reason code 2 had 9 records, I need to assign $rca = 2.  How do I do this based on your code?
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Author Comment

by:fastfind1
ID: 24084967
i meant, if reason code 2 had 9 records i need to assign $rcb = 9.  Sorry for the confusion.
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Author Comment

by:fastfind1
ID: 24084978
In the end, I need something like this:

$rca = the number of records with reason code 1;
$rcb = the number of records with reason code 2;
$rcc = the number of records with reason code 3;
$rcd = the number of records with reason code 4;
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Expert Comment

by:bleach77
ID: 24085039
The old code would be like
$code['Code 1'] = the number of records with reason code 1;
$code['Code 2'] = the number of records with reason code 2;
$code['Code 3'] = the number of records with reason code 3;

This code will produce like your first post
$rca1 =  the number of records with reason code 1;
$rca2 =  the number of records with reason code 2;
$rca3 =  the number of records with reason code 3;
$query_rs_v_c = sprintf("SELECT reason_code, count(amount) AS amount FROM pdf_made_cb WHERE  mid = '$mid' AND receive_date >= '$date1' AND receive_date <= '$date2' AND amount >= $amt1 AND amount <= $amt2 GROUP BY reason_code ORDER BY reason_code");
$rs_v_c = mysql_query($query, $connect_crm) or die(mysql_error());
 
$count = 0;
 
while ($row = mysql_fetch_assoc($rs_v_c)) {
  $count++;
  ${"rca".$count} = $row['amount'];
}  

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Accepted Solution

by:
bleach77 earned 450 total points
ID: 24085054
This should work like your new post
$rca = the number of records with reason code 1;
$rcb = the number of records with reason code 2;
$rcc = the number of records with reason code 3;
$rcd = the number of records with reason code 4;
$query_rs_v_c = sprintf("SELECT reason_code, count(amount) AS amount FROM pdf_made_cb WHERE  mid = '$mid' AND receive_date >= '$date1' AND receive_date <= '$date2' AND amount >= $amt1 AND amount <= $amt2 GROUP BY reason_code ORDER BY reason_code");
$rs_v_c = mysql_query($query, $connect_crm) or die(mysql_error());
 
$count = 'a';
 
while ($row = mysql_fetch_assoc($rs_v_c)) {
  ${"rc".$count} = $row['amount'];
  $count++;
}  

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Expert Comment

by:bleach77
ID: 24085120
Both way you need to either declare the variables first.
$rca1 = $rca2 = $rcb = "";

OR

when you want to use it, you have to check using isset, otherwise an error will occur.

if(isset($rca1)) echo $rca1;
if(isset($rca2)) echo $rca2;
if(isset($rcb)) echo $rcb;
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