How to return to the page without refreshing the page in php

php method to return the page without refreshing: 1. Open the corresponding PHP code file; 2. Pass "echo"<script>alert('...');history.go(-1) ;</script>";" statement can be returned without refreshing the page.

The operating environment of this article: Windows 7 system, PHP version 7.1, DELL G3 computer

How does php return to the page without refreshing it?

PHP implements methods of returning to the previous page without refreshing and refreshing

Returning to the previous page without refreshing:

echo"<script>alert(&#39;已从错题本中删除！&#39;);history.go(-1);</script>";

Returning to the previous page with refreshing:

echo "<script>alert(&#39;错题全部清除完毕!&#39;);location.href=&#39;" . $_SERVER["HTTP_REFERER"] . "&#39;;</script>";

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