php遍历多个数组

Question

I have a form that has 7 different criteria. Each criteria has 3 or 4 questions that a user will check the appropriate value.

I want to loop through each question and create a string which contains the criteria id -> question id -> and answer value.

I cannot seem to get it to work.

Here is a dump of the arrays:

criteria array:

array(7) { [0]=> string(1) "1" [1]=> string(1) "3" [2]=> string(1) "5" [3]=> string(1) "7" [4]=> string(2) "10" [5]=> string(2) "11" [6]=> string(2) "12" } 

criteria id associated with each question

array(19) { [0]=> string(1) "1" [1]=> string(1) "1" [2]=> string(1) "1" [3]=> string(1) "3" [4]=> string(1) "3" [5]=> string(1) "3" [6]=> string(1) "5" [7]=> string(1) "5" [8]=> string(1) "5" [9]=> string(1) "7" [10]=> string(1) "7" [11]=> string(1) "7" [12]=> string(1) "7" [13]=> string(2) "10" [14]=> string(2) "10" [15]=> string(2) "10" [16]=> string(2) "11" [17]=> string(2) "11" [18]=> string(2) "11" } 

Question and answer array(only answered 6 question)

array(6) { [11]=> array(1) { [0]=> string(1) "5" } [12]=> array(1) { [0]=> string(1) "5" } [13]=> array(1) { [0]=> string(1) "5" } [14]=> array(1) { [0]=> string(1) "4" } [15]=> array(1) { [0]=> string(1) "4" } [16]=> array(1) { [0]=> string(1) "4" } }

Here is my code for looping that doesn't seem to work:

                  $criteriaNums = $_POST['criteriaNum'];
              $fk_criterias = $_POST['fk_criteria'];
              $questionValue = $_POST['questionValue'];

              foreach($questionValue as $question => $answer){
                //echo $question;
                    foreach($fk_criterias as $fk){
                        foreach($criteriaNums as $crit){
                            if($fk == $crit){
                                $string1 = $fk;
                                //echo $string1;
                            }
                        }
                    }
                    $string2 = $question;
                    foreach ( $answer as $result ){
                      $string3 = $result;
                      //echo $string3;
                  }
                $criteria .= $string1 . '|' . $string2 . '|' . $string3 . '|';
                //echo $criteria;
              }

any help would be greatly appreciated!!

Strings 2 and 3 seem to be working fine. It is string1 that isn't working.

this is the output the above code generates:

11|11|5|11|11|5|11|12|5|11|11|5|11|12|5|11|13|5|11|11|5|11|12|5|11|13|5|11|14|4|11|11|5|11|12|5|11|13|5|11|14|4|11|15|4|11|11|5|11|12|5|11|13|5|11|14|4|11|15|4|11|16|4|

This is how this should work:

There is a total of 19 questions. In the above question/answer array dump the user only answered 6.

The first question is id #11 and the answer is value 5. the second question is id #12 and the answer is value 5 third is id #13 answer is 5 4th is id #14 answer is 4 5th is id #15 answer is 4 6th is id #16 answer is 4

The criteria id array dump above is the associated criteria that goes with each question. if you look at the dump you can see the first 6 (0 - 5) has 1, 1, 1, 3, 3, 3

so the expected output should be

1 | 11 | 5 | 1 | 12 | 5 | 1 | 13 | 5 | 3 | 14 | 4 | 3 | 15 | 4 | 3 | 16 | 4 |

I hope this helps?

Array ( [1] => Array ( [11] => Array ( [0] => 5 )

        [12] => Array
            (
                [0] => 5
            )

        [13] => Array
            (
                [0] => 5
            )

    )

[3] => Array
    (
        [14] => Array
            (
                [0] => 5
            )

        [15] => Array
            (
                [0] => 5
            )

        [16] => Array
            (
                [0] => 5
            )

    )

)

1|11|5|1|12|5|1|13|5|3|14|5|3|15|5|3|16|5|

Here is my code:

                foreach ($questionValue as $crit => $questions) {
                    foreach ($questions as $answer => $result) {
                        foreach($result as $value){
                            $criteria = $crit . "|" . $answer . "|" . $value . "|";
                            echo $criteria;
                        }
                    }
                }                 

Answer 1

Can you please provide output? Can you please provide an example of the input arrays? The part doing $string1 looks ok, without the aforementioned data it is doubful that the problem can be resolved.

This one looks strange:

foreach ( $answer as $result ){
                      $string3 = $result;
                      //echo $string3;
                  }

You may either want to add a condition (like in criteria) or do $string3 .= $result;

Answer 2

I fixed the issue:

I used concatenation for the values.

Here is my code:

                foreach ($questionValue as $crit => $questions) {
                    foreach ($questions as $answer => $result) {
                        foreach($result as $value){
                            $string .= $crit . "|" . $answer . "|" . $value . "|";
                            //echo $criteria;
                        }
                    }
                  $criteria = $string;
                }