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POMYSQL close connect can not halt the insert activity
 

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    <pre><code>&lt;?php header('Content-Type: text/html; charset=utf8'); $dbhost = '192.168.1.23'; $dbuser = 'demouser01'; $dbpass = 'demo*PW'; $dbname = 'testdb1'; $conn = mysql_connect($dbhost, $dbuser, $dbpass) or die('Error with MySQL connection'); mysql_select_db($dbname); mysql_query("SET NAMES 'utf8'"); mysql_query("SET CHARACTER_SET_CLIENT='utf8'"); mysql_query("SET CHARACTER_SET_RESULTS='utf8'"); if(isset($_POST['start'])) { $chi = 'chiiiii'; $id = 1; for ($i = 1; $i &lt;= 99999999999; $i++) { $eng = substr(str_shuffle(str_repeat("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ", 5)), 0, 1024); $math = substr(str_shuffle(str_repeat("1234567890", 6)), 0, 16); $sql = "INSERT INTO test_tb (id,chi,eng,num) VALUES (".$id.",'".$chi."','".$eng."',".$math.")"; $result = mysql_query($sql) or die('MySQL query error'); $id++; } $id = 0; sleep(60); mysql_close($conn); } else if(isset($_POST['stop'])) { mysql_close($conn); } ?&gt; &lt;form action="&lt;?=$_SERVER['PHP_SELF'];?&gt;" method="post"&gt; &lt;input type="submit" name="start" value="Start Insert"&gt; &lt;input type="submit" name="stop" value="Stop Insert"&gt; &lt;/form&gt; </code></pre> <p>There are two buttons in the website, insert to insert a record repeatedly, and stop to halt the insert. However, I tried using the MySQL close connection, it will stop functioning in PHP, but the activity still remains there. The insert still keeps performing. How to fix the problem? Thanks.</p>
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    1. CO[**Please, don't use `mysql_*` functions in new code**](http://bit.ly/phpmsql). They are no longer maintained [and are officially deprecated](https://wiki.php.net/rfc/mysql_deprecation). See the [**red box**](http://j.mp/Te9zIL)? Learn about [*prepared statements*](http://j.mp/T9hLWi) instead, and use [PDO](http://php.net/pdo) or [MySQLi](http://php.net/mysqli) - [this article](http://j.mp/QEx8IB) will help you decide which. If you choose PDO, [here is a good tutorial](http://j.mp/PoWehJ).
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    2. CO..that said, why are you trying to insert `99,999,999,999` records into the database? Your main problem is that the `$conn` that is refered to in the stop command is not the same `$conn` that is started in the other command as they're two different requests. You **might** be able to save the handle (`$conn`) in a `$_SESSION` variable and then refer to it.
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    3. COPDO has any function for my case? Thanks for your help
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