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My code below id incrementing the id vlaue by 1 of the existing max value e.g. A00001 and echo new value as A00002, but the else condition is not working
Need help... Thanks.
//connect to database
include ('');

$result=mysql_query("Select max(aid) as lastaid from assets";);
if (false !== $row = mysql_fetch_assoc($result)) {
        $max_id = $row["lastaid"];
        $new_id = $max_id;

    $max_id = "A00001";
    echo "$max_id";
Posted 30-Aug-12 3:29am
Edited 30-Aug-12 21:22pm

1 solution

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Solution 1

You are a victim of operator precedence. The comparison operator !== (and the other comparison operators) have higher precedence than assignment. That means that
false !== $row = mysql_fetch_assoc($result)
strictly parses as
(false !== $row) = mysql_fetch_assoc($result)
which probably isn't what you mean.
if (!$row = mysql_fetch_assoc($result))
behaves as you would expect, even though it is a "violation" of the precedence list.
Fun, isn't it? Poke tongue | ;-P

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