单击文本标记以生成新哈希 [英] Clicking a text tag to generate new hash

问题描述

$num = rand(0, 10000);
$hash = password_hash($num, PASSWORD_BCRYPT, array(
    'cost' => 6
));

以上是哈希值

<p class="reg-code">Hash: <span><?php echo $hash; ?></span><i class="fa fa-refresh" aria-hidden="true" id="refresh-code"></i></p>

我希望如此，当有人点击标签时，它会在跨度中生成新的哈希，我怎么会碰到这个？

I would like it so when someone clicks on the tag that it generates a new hash into the span, how would I come across this?

我不知道我会怎么做，比如PHP中的函数或什么。

I'm not sure how I would do this, like as a function in PHP or what.

推荐答案

它叫做Ajax：

<p class="reg-code">
  Hash: 
  <span id="hash"><?php echo $hash; ?></span>
  <i id="click" class="fa fa-refresh" aria-hidden="true" id="refresh-code"></i>
</p>

$('#click').click(function(){
  $.post( "./path/to/hashscript.php", function( data ) {
    $( "#hash" ).html( data );
  });
});

您使用JavaScript事件发出服务器请求并使用响应更新页面元素。您的PHP脚本应该回显 $ hash 。

You use JavaScript events to make a server request and update the page elements with the response. Your PHP script should echo the $hash.

echo password_hash($num, PASSWORD_BCRYPT, ['cost' => 6]);

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