[Resolved] how do I add up the values?

ejwf

I am writing an evaluation whereby the user answers a load of questions and ranks thier answers Nearly Always / Often / Occasionally / Rarely / Hardly Ever.
I have given each answer a value so Nearly Always = 5 / Often = 4 etc.etc. down to Hardly Ever = 1
I have set up a variable $answers with this information but I just don't know how to add up the values to give a total
Any ideas - thanks

Then based on this total if it is >1 and <10 I will echo one statement, >21 and <30 another statement etc.etc. giving the user their evaluation/feedback

any ideas on the counting part of this

TIA

richard49

If users just tick their answers, you will have to increment the corresponding field value in the SQL table by one. The table will include one integer field for each answer option.
This has one week side: no time periods to query the table.

A better option is to save each user's answer as a seperate record with a timestamp as an extra field. Here, the answers will be saved as 0 or 1. Your query will include a COUNT(*) on these fields.

Sonner or later you will have to learn array_count_values() function, it's fantastic, check the manual.

ejwf

thanks for this, but I'm not sure if we are talking about the same thing - doesn't array_count_values() just count the number of time a certain value appears in an array?

I want to add up the values
for example;

I have assigned the values of ;
Nearly Always = 5 / Often = 4 / Occasionally = 3 / Rarely = 2 / Hardly Ever = 1

on question 1 the user ticks the Often box
question 2 ticks the Occasionally box
question 3 ticks the Often box again

I want the code to add together the assigned values of 4 + 3 + 4 to give a total value of 11

any ideas (a bit of code would be much appreciated !)

TIA

marian

ok first if all your variables are not stored as an array name; you basically need to add the values by getting the check box names.

if all of these Nearly Always = 5 / Often = 4 / Occasionally = 3 / Rarely = 2 / Hardly Ever = 1

are stored as one big array as $variables[]

checkbox1 name=$variables[] value=5
checkbox2 name=$variables[] value=4
checkbox3 name=$variables[] value=3
etc

just get the array

so if you get the array you should have something like this:

$values=array(5,4,3,2,1);
then use array_sum($values)

you can also do array_sum(array_values($array_name))

all depends on your array and what is assigned key value.

hope this helps

ejwf

I think I understand what is going on here, but cannot get it to work - any ideas anyone.......?

The form part works OK
but on the process page, I keep getting parse errors on the line
ELSEIF ($value <='70' && >= '51')

code for form

<form name="self-esteem" method="post" action="process_self-esteem.php">
<table width="100%" border="0" cellspacing="0" cellpadding="5">
            <tr bgcolor="#FFEFE8" valign="top"> 
              <td width="13%"><br>
First Name:</td>            <td colspan="2"> <b> 
<input type="text" name="firstname" size="40"></b></td></tr>
<tr bgcolor="#FFEFE8"> 
<td width="13%" bgcolor="#FEAB6D">Question 1</td>
<td colspan="2" bgcolor="#FEAB6D"><b>I feel confident to deal with the normal challenges of my work and life.</b></td></tr>
<tr bgcolor="#FFEFE8"> 
<td width="13%" rowspan="5">&nbsp;</td>
<td width="13%" height="2"> 
  <p align="right"><b>Nearly Always</b></p></td>
              <td width="74%" height="2"> 
                <input type="radio" name="q[1-1]" value="9">
              </td>
            </tr>
            <tr bgcolor="#FFEFE8"> 
              <td width="13%" height="2"> 
                <div align="right"><b>Often</b></div>
              </td>
              <td width="74%" height="2"> 
                <input type="radio" name="q[1-2]" value="7">
              </td>
            </tr>
            <tr bgcolor="#FFEFE8"> 
              <td width="13%" height="2"> 
                <div align="right"><b>Occasionally</b></div>
              </td>
              <td width="74%" height="2"> 
                <input type="radio" name="q[1-3]" value="5">
              </td>
            </tr>
            <tr bgcolor="#FFEFE8"> 
              <td width="13%" height="2"> 
                <div align="right"><b>Rarely</b></div>
              </td>
              <td width="74%" height="2"> 
                <input type="radio" name="q[1-4]" value="3">
              </td>
            </tr>
            <tr> 
              <td width="13%" bgcolor="#FFEFE8"> 
                <div align="right"><b>Hardly Ever</b></div>
              </td>
              <td width="74%" bgcolor="#FFEFE8"> 
                <input type="radio" name="q[1-5]" value="0">
              </td>
            </tr>

// etc.etc. for 10 questions

        <tr bgcolor="#FFEFE8"> 
          <td width="13%" bgcolor="#FEAB6D">&nbsp;</td>
          <td colspan="2" bgcolor="#FEAB6D"> <b> 
            <input type="submit" name="Submit" value="Evaluate Me">
            <input type="reset" name="Submit2" value="Clear Form">
            </b></td>
        </tr>
      </table>
    </form>

code for processing and evaluating user input

//set variables
$Name = $_POST['firstname'];

if (!isset($_POST['submit'])) 
{     

$answers = array( 
        1-1 => '0',        1-2 => '3',         1-3 => '5',         1-4 => '7',        1-5 => '9',
       2-1 => '9',        2-2 => '7',         2-3 => '5',         2-4 => '3',        2-5 => '0', 
        3-1 => '9',        3-2 => '7',         3-3 => '5',         3-4 => '3',        3-5 => '0',
		4-1 => '0',        4-2 => '3',         4-3 => '5',         4-4 => '7',        4-5 => '9',
		5-1 => '0',        5-2 => '3',         5-3 => '5',         5-4 => '7',        5-5 => '9',
		6-1 => '9',        6-2 => '7',         6-3 => '5',         6-4 => '3',        6-5 => '0',
		7-1 => '0',        7-2 => '3',         7-3 => '5',         7-4 => '7',        7-5 => '9',
		8-1 => '9',        8-2 => '7',         8-3 => '5',         8-4 => '3',        8-5 => '0',	
		9-1 => '9',        9-2 => '7',         9-3 => '5',         9-4 => '3',        9-5 => '0',
		10-1 => '0',      10-2 => '3',         10-3 => '5',        10-4 => '7',       10-5 => '9'
		        ); 

    echo "<br><br>Thank You $Name, <br>Here is the feedback on your evaluation:<br><br>"; 

foreach ($answers as $key => $value) 
 { 
    array_sum($value) ;
 } 

IF ($value >= '71')
{$body = "Evaluation:<br>
Your self esteem seems to be quite high. etc.etc. blah. blah.";}

ELSEIF ($value <='70' && >= '51')
{$body = "Evaluation:<br>
You may have moderately high self esteem. etc.etc. blah. blah.";}

ELSEIF ($value <='50' && >= '31')
{$body = "Evaluation:<br>
Your result is suggestive of low to moderate self esteem. etc.etc. blah. blah";}

ELSE ($value <= '30')
{$body = "Evaluation:
Your level of self esteem could be quite low if your result is accurate. etc.etc. blah. blah.";}

echo $body;
}

xblue

on either side of && there must be a complete statement that php can evaluate, so it should be

ELSEIF ($value <='70' && $value >= '51')

however you could simplify and only use the lower limit since you covered the upper one before (hope this is not regarded as sloppy coding 😉)

ELSEIF ($value >= '51')

ejwf

thanks for this
I have added the extra $value and that seems to have fixed that, but now I am getting the error message
Warning: array_sum(): The argument should be an array in /home/////process_self-esteem.php on line 128

line 128 is
array_sum($value) ;

and then it echo the final else $body statement

any ideas anyone?

xblue

sorry, I was focussing on your current problem. I'd follow marian's suggestion and simply rename all your inputs, but slightly different: not q[] and not q[1-1], q[1-2], but simply q[0] for the 1st group of radio buttons, q[1] for the second group and so on. the values then should be the numbers as currently.

then try array_sum($_POST['q']; - I'm not absolutely sure it will work - and I'm getting a little tired -, but can't try right now, so give it a go.

ejwf

thanks for everyones help
I have got it sorted now
code I finished with

//set variables
$Name = $_POST['firstname'];

if (!isset($_POST['submit'])) 
{     

$answers = array( 
        1 => '0',        1 => '3',         1 => '5',         1 => '7',        1 => '9',
       2 => '9',        2 => '7',         2 => '5',         2 => '3',        2 => '0', 
        3 => '9',        3 => '7',         3 => '5',         3 => '3',        3 => '0',
		4 => '0',        4 => '3',         4 => '5',         4 => '7',        4 => '9',
		5 => '0',        5 => '3',         5 => '5',         5 => '7',        5 => '9',
		6 => '9',        6 => '7',         6 => '5',         6 => '3',        6 => '0',
		7 => '0',        7 => '3',         7 => '5',         7 => '7',        7 => '9',
		8 => '9',        8 => '7',         8 => '5',         8 => '3',        8 => '0',	
		9 => '9',        9 => '7',         9 => '5',         9 => '3',        9 => '0',
		10 => '0',      10 => '3',         10 => '5',        10 => '7',       10 => '9'
		        ); 

    echo "<br><br>Thank You $Name, <br>Here is the feedback on your evaluation:<br><br>"; 

foreach ($answers as $key => $value) 
 { 
    $value = (array_sum($_POST['q'])); 
 } 

  echo "You Scored $value out of a possible total of 90<br><br>";

IF ($value >= '71') 
{$body = "Evaluation:<br> 
Your self esteem seems to be quite high. etc.etc. blah. blah.";} 

ELSEIF ($value <='70' && >= '51') 
{$body = "Evaluation:<br> 
You may have moderately high self esteem. etc.etc. blah. blah.";} 

ELSEIF ($value <='50' && >= '31') 
{$body = "Evaluation:<br> 
Your result is suggestive of low to moderate self esteem. etc.etc. blah. blah";} 

ELSE ($value <= '30') 
{$body = "Evaluation: 
Your level of self esteem could be quite low if your result is accurate. etc.etc. blah. blah.";} 

echo $body; 
}