Question

我正在尝试计算关联数组的值，但它并不是我想做的。

我从数据库中提取数据，因为我需要一个问题的所有答案。数据库中的答案在answer1，answer2，answer3等字段下，最多为answer20。

我要做的是计算包含数据的字段数，并忽略没有任何数据的字段。

到目前为止，这是我的代码：

<?php
        $results = $db->get_results("SELECT * FROM wellness_hra_questions WHERE category='general' AND level='1' AND gender='All' AND active='yes' ORDER BY id ASC");
        foreach($results as $result){
            $id = $result->id;
        } 

                    $answers = $db->get_results("SELECT answer1, answer2, answer3, answer4, answer5, answer6, answer7, answer8, answer9, answer10, answer11, answer12, answer13, answer14, answer15, answer16, answer17 FROM wellness_hra_questions WHERE id=".$id."");
                        //$db->debug();


                        for( $i=1; $i <= 17; $i++) {

                            foreach($answers as $a_result){
                                $answer = 'answer';
                                $answer_id = $answer.$i;
                                $answer_id2 = $a_result->$answer_id;

                                $answer1 = $a_result->answer1;
                                $array1 = array('1'=>''.$answer1.'');

                                $answer2 = $a_result->answer2;
                                $array2 = array('2'=>''.$answer2.'');

                                $answer3 = $a_result->answer3;
                                $array3 = array('3'=>''.$answer3.'');

                                $answer4 = $a_result->answer4;
                                $array4 = array('4'=>''.$answer4.'');

                                $answer5 = $a_result->answer1;
                                $array5 = array('5'=>''.$answer5.'');

                                $answer6 = $a_result->answer6;
                                $array6 = array('1'=>''.$answer6.'');
                            }

                                if($answer1 == TRUE){
                                    $newvalue1 = $array1;   
                                }
                                if($answer2 == TRUE){
                                    $newvalue2 = $array2;   
                                }
                                if($answer3 == TRUE){
                                    $newvalue3 = $array3;   
                                }
                                if($answer4 == TRUE){
                                    $newvalue4 = $array4;   
                                }
                                if($answer5 == TRUE){
                                    $newvalue1 = $array5;   
                                }
                                if($answer1 == TRUE){
                                    $newvalue6 = $array6;   
                                }

                                $newarray = array_merge($newvalue1,$newvalue2, $newvalue3, $newvalue4, $newvalue5);

                                $count = count($newarray, COUNT_RECURSIVE);
                                echo $count;
                        }
?>

Answer 1

你需要在这里进行代码清理 - 如果你想要的是一个计数，array_merge仅用于此目的，这应该做我认为你想做的事情：

for( $i=1; $i <= 17; $i++) {
    foreach($answers as $a_result){

        $answer_id = 'answer'.$i;
        $answer_id2 = $a_result->$answer_id;

        $thisCount = 0;
        $newarray = array();
        for($j = 1; $j < 7; $j++) {
            $var = "answer" . $j;
            $$var = ${"a_result->answer" . $j};

            if (strlen($$var) > 0) {
                $arrayID = "array" . $j;
                $$arrayID = array((string)$j => $$var);// I don't think you need this but if you do included array_merge here
                array_merge($newarray, $$arrayID);
                $thisCount++;
            }
        }

        echo $count;
        print_r($newarray); // show the contents of the merged arrays
    }// end foreach
}//end for

计算关联数组的数组值不起作用

1 个答案: