How to do bulk deletion in PHP?

How do you do bulk deletion in PHP? Find the Code

I've been working on a project recently, but the bulk deletion has never worked. I put the code on the following, you Daniel help me to see where the problem is, and then thank you!

1. Bulk deletion

if ($_post["CHK"]) {

$sid = Implode (",", $_post["chk"]);

$query = mysql_query ("Delete from news where news_id in (". $sid. ")");

if ($query) {

echo "";

}

else {

echo "";

}

}

This method how to delete also not, there are sometimes the cancellation can also delete, do not know why, ask the expert to answer.

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The SQL statement echo out to see exactly what is being executed, not to think of other solutions

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This problem is easy to solve, the $_post["chk"] printing, the SQL statement printing problem solved

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I suggest you put all your code on it.

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echo "";

Your checkbox does not give value.

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The point of cancellation can also be deleted because this sentence is to write:

There is also the Del () function:

if (num==0) {

Alert ("Please choose!");

return false;

}