如何存储随机MySQL查询以供以后使用？

Question

$user_name = "xxx";
$password = "xxx";
$database = "xxx";
$server = "xxx";

$db_handle = mysql_connect($server, $user_name, $password);

$db_found = mysql_select_db($database, $db_handle);

$randWordDesc = mysql_query("SELECT * FROM words ORDER BY RAND() LIMIT 1");
$db_field = mysql_fetch_assoc($randWordDesc);

if(isset($_POST['new'])){

$unaltered = $db_field['word'];

$noA = str_replace("a", "b", $unaltered);


}

if (isset($_POST['edit'])){

global $noA;
$noR = str_replace("r", "c", $unaltered);


}

?>


<form action="http://xxx" method="post" ><br><br>
<input type="submit" value="edit current" name = "edit" id="gobutton">&nbsp&nbsp&nbsp
<input type="submit" value="new" name = "new" id="gobutton">
</form>

The code I have now will pull up a new word if the 'new' button is selected and replace the 'a''s with 'b''s. I want the 'edit' button to take the exact same word just pulled up and replace the 'r''s with 'c''s. However, as the code is now, the edit button will either pull up a new word or not pull up anything at all.

How could I get the edit button to edit the query that the 'new' button pulled up? I'm not sure how I could store it by the id, but all the columns have an id number, if that helps. Also I know that "SELECT * FROM words ORDER BY RAND() LIMIT 1" is really bad form, but that's an issue I want to tackle after this problem. Thanks for your help.

Answer 1

As the first query returns only one result, you could take the primary key column data of the resulting row and store it in a hidden input element on the page. When you use the edit button, you would then pass the hidden input field value which can be used to pull the same record as you pulled with the most recent get new word function call.

Consider something like the following:

<form action="http://xxx" method="post" ><br><br>
<input type="hidden" value=<?php echo $db_field['primary_key']; ?> name="record_id">
<input type="submit" value="edit current" name = "edit" id="gobutton">&nbsp&nbsp&nbsp
<input type="submit" value="new" name = "new" id="gobutton">
</form>

The id will be passed with your post, which you can then check for and use in a select query to get the record. Just be sure to be careful with data handling. Consider updating to a current API (mysql~ functions are deprecated) and prepared statements .