即使在使用javascript和php提交按钮后，获取所有输入字段并在文本字段中保留值

Question

I have multiple input fields and random input names, what I want to achieve is get the data entered in the text fields but then on clicking on the submit button, the data entered will remain.

Sample code:

  for($i=0;$i<$count1;$i++) {
        echo '<input type="text" name="'.$random1.'" value=""/>';
  }

  for($j=0;$j<$count2;$j++) {
        echo '<input type="text" name="'.$random2.'" value=""/>';
  }

  for($k=0;$k<$count3;$k++) {
        echo '<input type="text" name="'.$random3.'" value=""/>';
  }
  echo '<input type="submit" name="submit" value="submit"/>'

The problem here is that I don't know what are the 'input names'. I want the values entered by user into this text fields remain. How would I do that? If you don't know what the 'input names' are?

Answer 1

Can you use hidden inputs to keep tracks of the names? Like this:

for($i=0;$i<$count1;$i++) {
    $value=getValueFor("section1-$i");
    echo '<input type="text" name="'.$random1.'" value="'.$value.'"/>';
    echo '<input type="hidden" name="section1-'.$i.'" value="'.$random1.'"/>';
}

for($j=0;$j<$count2;$j++) {
    $value=getValueFor("section2-$j");
    echo '<input type="text" name="'.$random2.'" value="'.$value.'"/>';
    echo '<input type="hidden" name="section2-'.$j.'" value="'.$random2.'"/>';
}

for($k=0;$k<$count3;$k++) {
    $value=getValueFor("section3-$k");
    echo '<input type="text" name="'.$random3.'" value="'.$value.'"/>';
    echo '<input type="hidden" name="section3-'.$k.'" value="'.$random3.'"/>';
}

where getValueFor should be a function which checks what you got from GET or POST. For example:

function getValueFor($x){
    $res = "";
        if (isset($_REQUEST[$x])){
            $name=$_REQUEST[$x];
            $res = $_REQUEST[$name];
        }
    return res;
}