数组数组上的htmlspecialchars无法正常工作

时间:2018-03-25 22:46:05

标签: php arrays forms dynamic htmlspecialchars

我有这个表格有很多部分,其中一些有数组的名称,因为它们应该动态加起来。我首先尝试对它们执行htmlspecialchars,然后在单击提交按钮后,在下一个确认页面上回显它们,但由于某种原因它将无法工作。我在$ clean上做了print_r,但它没有显示它们的输入$值,所以我不知道我做错了什么。

如果有人可以帮助我,那将会很棒。

谢谢。

这是htmlspecialchars代码的一部分。

$clean = array();

if( !empty($_POST) ) {

foreach( $_POST as $key => $value ) {

    if( is_array($key)){

      foreach($key as $key2 => $value2)

         $clean[$key2] = htmlspecialchars( $value2, ENT_QUOTES);

    } else {

        $clean[$key] = htmlspecialchars( $value, ENT_QUOTES);
      }

    } 
}

这是它的一部分

 <div class="seconf-h-form">
      <label>Multiple</label>
      <input type="radio" id="r2" name="team_select" 
      onchange="toggleFunc('ex_t_button');" value="Multiple"/>
 </div>

 <div class="element_wrap" id="box_2">
   <input type="submit" name="add" id="add" value="add more">
   <label>The name of your team</label>
   <input type="text" name="ex_team_n[]" id="ex_team_n"/>
   <select name="ex_amount[]">
      <option value="">Select</option>
      <option value="3">3</option>
      <option value="4">4</option>
      <option value="5">5</option>
      <option value="6">6</option>
   </select>
  <div id="add_section"></div>

这是我回应它的部分

<div class="element_wrap">
    <label>The name of your team</label>
    <p><?php echo $clean['ex_team_n']; ?></p>
</div>


<div class="element_wrap">
    <label>The number of your team</label>
    <p><?php echo $clean['ex_amount']; ?></p>
</div>

  <input type="hidden" name="amount" value="<?php if( 
  $clean['team_select'] === "Multiple"){echo $clean['ex_team_n'];} ?>">
  <input type="hidden" name="amount" value="<?php if( 
  $clean['team_select'] === "Multiple"){echo $clean['ex_amount'];} ?>">

3 个答案:

答案 0 :(得分:3)

您可以使用array_walk_recursive()来转义数组中的所有数据:

// Sample data, you can use $_POST instead or any other array
$array = array(
    [
        'a_key' => '<b>html</b>',
        'b_key' => '<a href="http://example.com/">another code</a>',
        'c_key' => array('<script>alert(\'Hello\');</script>', 'No code, no change'),
    ],
    [
        'd_key' => '<small>ssup</small>',
        'e_key' => 'stack',
        'f_key' => 'overflow',
    ],
);

// Function to escape the value, you must pass the item by reference using the & operator
function html_escape(&$item){
    $item = htmlspecialchars($item, ENT_QUOTES);
}

// Dump data before escaping
var_dump($array);

// Walk recursively through the array and call our function
array_walk_recursive($array, 'html_escape');

// Dump data after escaping
var_dump($array);

转义之前转储的数据

array (size=2)
  0 => 
    array (size=3)
      'a_key' => string '<b>html</b>' (length=11)
      'b_key' => string '<a href="http://example.com/">another code</a>' (length=46)
      'c_key' => 
        array (size=2)
          0 => string '<script>alert('Hello');</script>' (length=32)
          1 => string 'No code, no change' (length=18)
  1 => 
    array (size=3)
      'd_key' => string '<small>ssup</small>' (length=19)
      'e_key' => string 'stack' (length=5)
      'f_key' => string 'overflow' (length=8)

转义后转储的数据

array (size=2)
  0 => 
    array (size=3)
      'a_key' => string '&lt;b&gt;html&lt;/b&gt;' (length=23)
      'b_key' => string '&lt;a href=&quot;http://example.com/&quot;&gt;another code&lt;/a&gt;' (length=68)
      'c_key' => 
        array (size=2)
          0 => string '&lt;script&gt;alert(&#039;Hello&#039;);&lt;/script&gt;' (length=54)
          1 => string 'No code, no change' (length=18)
  1 => 
    array (size=3)
      'd_key' => string '&lt;small&gt;ssup&lt;/small&gt;' (length=31)
      'e_key' => string 'stack' (length=5)
      'f_key' => string 'overflow' (length=8)
array_walk_recursive()

Documentation

答案 1 :(得分:0)

你没有迭代正确的对象,也没有创建内部数组。

替换行:

if( is_array($key)){
    foreach($key as $key2 => $value2)
        $clean[$key2] = htmlspecialchars( $value2, ENT_QUOTES);

if( is_array($value)){
    foreach($value as $key2 => $value2) {
        if (!isset($clean[$key])) $clean[$key] = array();
        $clean[$key][$key2] = htmlspecialchars( $value2, ENT_QUOTES);
    }

然后它应该正常工作。

答案 2 :(得分:0)

function sanitizeMyArray($array) {

    array_walk_recursive($array, 'standard');

    return $array;

}

function standard(&$item, $key) {

//You must return this to $item for it to work.
$item =  htmlspecialchars($item, ENT_QUOTES);

return $item;

}

$results = sanitizeMyArray($array);
print_r($results)