On Mar 29, 2007, at 4:52 PM, Zoltán Németh wrote:
<snip>
(I assume you want this calculation within one given day)
you could read all rows into an array like
$timeinfo = array();
$sql = "SELECT minute, sequence FROM table WHERE day='$day'";
$result = mysql_query($result);
while ($row = mysql_fetch_assoc($result)) {
$timeinfo[$row['sequence'] = $row['minute'];
}
and then calculate and echo the difference between any element of the
array:
$diff0_1 = $timeinfo[1] - $timeinfo[0];
$timeinfo[$row['sequence'] = $row['minute']; <--- is the "[" between $timeinfo and $row a typo? or is there supposed to be a closing "]" somewhere?
When I add a closing "]" to it as such: $timeinfo[$row['sequence'] = $row['minute']]; I get this error when I try and open the page:[Fri Mar 30 13:55:36 2007] [error] PHP Notice: Undefined index: minute in /Volumes/RAIDer/webserver/Documents/tests/oatstest/ oatstime.php on line 15 [Fri Mar 30 13:55:36 2007] [error] PHP Notice: Undefined index: in /Volumes/RAIDer/webserver/Documents/tests/oatstest/oatstime.php on line 15 [Fri Mar 30 13:55:36 2007] [error] PHP Notice: Undefined offset: 1 in /Volumes/RAIDer/webserver/Documents/tests/oatstest/oatstime.php on line 18 [Fri Mar 30 13:55:36 2007] [error] PHP Notice: Undefined offset: 0 in /Volumes/RAIDer/webserver/Documents/tests/oatstest/oatstime.php on line 18
Line 15 is this line: $timeinfo[$row['sequence'] = $row['minute']]; and line 18 has: $diff0_1 = $timeinfo[1] - $timeinfo[0];What I am trying to do is subtract $timeinfo[1] from $timeinfo[0] and then display the difference.
When I echo $timeinfo it just says "array" so my thinking is that the errors are caused by the array not being populated properly based on the extra "[" or a missing "]". Am I at least on the right track?
-- Jason Pruim [EMAIL PROTECTED] Production & Technology Manager MQC Specialist (2005 certified) 3251 132nd Ave Holland MI 49424 616.399.2355 www.raoset.com"We hold these truths to be self-evident. That all men are created equal, that they are endowed by their creator with certain unalienable rights, (and) that among these are Life, Liberty, and the pursuit of Happiness."
smime.p7s
Description: S/MIME cryptographic signature
