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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.

<?php
//connect to database
include ('config.inc');
 

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

    else
 
    {
    $max_id = "A00001";
    }
    echo "$max_id";
?>
Posted 30-Aug-12 2:29am
ramen79761
Updated 30-Aug-12 20:22pm
v2

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.
However,
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? ;P

Peter
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