减少代码的另一种方法 - Alternative way to lessen code

Alternative way to lessen code

本文关键字：另一种方法代码 | 更新日期: 2023-09-27

我需要一些帮助，有没有一种方法来减少我的代码?这个问题发生特别是当我使用相当长的数组，我想知道是否有一种方法使它们更短?谢谢。

$query = "SELECT question,answer FROM easy_ques;";
    $retval = $conn->query($query);
     while($row = $retval->fetch_assoc()) {
            $quest[] = $row['question'];
            $ans[] = $row['answer'];
        }
        echo "<script>";
        echo "var answer = ['$ans[0]','$ans[1]','$ans[2]','$ans[3]','$ans[4]','$ans[5]','$ans[6]','$ans[7]','$ans[8]','$ans[9]','$ans[10]','$ans[11]','$ans[12]','$ans[13]','$ans[14]','$ans[15]','$ans[16]','$ans[17]','$ans[18]','$ans[19]','$ans[20]','$ans[21]','$ans[22]','$ans[23]','$ans[24]','$ans[25]','$ans[26]','$ans[27]','$ans[28]','$ans[29]','$ans[30]','$ans[31]','$ans[32]','$ans[33]','$ans[34]'];";
        echo "var question = ['$quest[0]','$quest[1]','$quest[2]','$quest[3]','$quest[4]','$quest[5]','$quest[6]','$quest[7]','$quest[8]','$quest[9]','$quest[10]','$quest[11]','$quest[12]','$quest[13]','$quest[14]','$quest[15]','$quest[16]','$quest[17]','$quest[18]','$quest[19]','$quest[20]','$quest[21]','$quest[22]','$quest[23]','$quest[24]','$quest[25]','$quest[26]','$quest[27]','$quest[28]','$quest[29]','$quest[30]','$quest[31]','$quest[32]','$quest[33]','$quest[34]'];";
        echo"</script>";

这个怎么样?它不依赖于长度，并产生可读的代码。

$query = "SELECT question,answer FROM easy_ques;";
$retval = $conn->query($query);
echo "<script>'n";
echo "var answer = new Array();'n";
echo "var question = new Array();'n";
while($row = $retval->fetch_assoc())
{
     echo "answerswer.push('{$row['answer']}');'n";
     echo "question.push('{$row['question']}');'n";
}
echo"</script>";

你也可以试试这个方法:

$row = $retval->fetch_assoc();
$questions = "'" . $row['question'] . "'";
$answers = "'" . $row['answer'] . "'";
 while($row = $retval->fetch_assoc()) {
        $questions = $questions . ",'" . $row['question'] . "'";
        $answers = $answers . ",'" . $row['answer'] . "'";
 }
 echo "<script>";
 echo "var answer = [$answers];";
 echo "var question = [$questions];";
 echo "</script>";

应该是:

$row = mysqli_num_rows($result);
for($i = 0; $i<$row; $i++)
{
 var answer = $ans[i];
var question= $quest[i];
}

您可以使用此方法。将35替换为变量(ans/quests)的长度

var newString = "";
var stringArr = [];
for (var i = 0; i < 35; i++) {
  stringArr.push("$ans'[" + i + "]'")
}
var newString = "var answer = [" + stringArr.join(", ") + "];";
echo newString;