下面的代码出了什么问题？ [关闭]

Question

<?php
$retrive=mysql_query("SELECT * FROM oes.questions;");
$questions=mysql_fetch_array($retrive);
?>
<form action="delete.php" method="post">
<input type="checkbox" name="del" value=<?php $questions["q_no"] ?> /><?php echo $questions["q_no"]; ?>
<input type="submit" value="submit"/>
<?php

if(isset($_POST["del"]))
{
  echo $_POST["del"];
} 
?>

I want to use delete ($_POST["del"]) function but for debugging I used echo and found that it prints '/' .

Answer 1

 value='<?php echo $questions["q_no"]; ?>'

You didn't echo the value of the $questions index.

EDIT: To help prevent XSS:

Make sure you set the header correctly:

 header('Content-type: text/html; charset=utf-8');


value="<?php echo htmlspecialchars($questions['q_no'], ENT_QUOTES, 'UTF-8'); ?>"