The code below works great. It prints out items in a MySQL database as an HTML table. However, the database has entries where the first column (the variable "site") is blank. How can I have this table exclude rows / entries where "site" is blank?
$result=mysql_query("SHOW TABLES FROM database LIKE '$find'")
or die(mysql_error());
if(mysql_num_rows($result)>0){
while($table=mysql_fetch_row($result)){
print "<p class=\"topic\">$table[0]</p>\n";
$r=mysql_query("SELECT * , itemsa - itemsb AS itemstotal FROM `$table[0]` ORDER BY itemstotal DESC");
print "<table class=\"navbar\">\n";
while($row=mysql_fetch_array($r)){
$itemstotal = $row['itemsa'] - $row['itemsb'];
print "<tr>";
print "<td class='sitename'>".'<a type="amzn" category="books" class="links2">'.$row['site'].'</a>'."</td>";
print "<td class='class1'>".'<span class="class1_count" id="class1_count'.$row['id'].'">'.number_format($itemstotal).'</span>'."</td>";
print "<td class='selector'>".'<span class="button" id="button'.$row['id'].'">'.''.Select.''.'</span>'."</td>";
}
print "</tr>\n";
}
print "</table>\n";
}
else{
print "";
}
Add a where clause to the SQL query.
WHERE `site` <> ''
or
WHERE `site` != ''
should work.
However, if you want the rows where site is blank for other PHP options, it would be better to filter out the blank sites in the PHP and not the MySQL query.
Just put the following before the print calls in your while loop:
if (trim($row['site']) == '') {
// skip output of this row if site is empty
continue;
}
while($row=mysql_fetch_array($r)){
if($row['site'] != "") {
$itemstotal = $row['itemsa'] - $row['itemsb'];
print "<tr>";
print "<td class='sitename'>".'<a type="amzn" category="books" class="links2">'.$row['site'].'</a>'."</td>";
print "<td class='class1'>".'<span class="class1_count" id="class1_count'.$row['id'].'">'.number_format($itemstotal).'</span>'."</td>";
print "<td class='selector'>".'<span class="button" id="button'.$row['id'].'">'.''.Select.''.'</span>'."</td>";
}
}
The simplest solution would be to insert the following line into your inner while block:
while($row=mysql_fetch_array($r)){
if (!trim($row['site'])) continue; // skip empty rows
$itemstotal = $row['itemsa'] - $row['itemsb'];
Edit: Actually, it looks like that $itemstotal variable isn't needed; it's being calculated as a "virtual" itemstotal column in the SQL query. If you replace "number_format($itemstotal)" with "number_format($row['itemstotal'])" a few lines down, you can get rid of the "$itemstotal = ..." line entirely.
Related
I'm trying to display the total number of records returned from my mongo 3.4 database. For this particular query, the results should be 380 but it's showing 14489. I'm sure it's something simple that I'm missing / forgetting about PHP
Here's the code: (including some debug statements about the type of variable I'm dealing with)
$numrecords = count($records);
echo"<BR><font color=red>".gettype($records)."</font>";
echo"<BR><font color=red>".sizeof($records)."</font>";
if ( $numrecords > 0 ) {
echo "<tr><td colspan='5'><h3>Record Count: ".$numrecords ."</h3></td></tr>";
echo "<tr><th>PH Number</th><th>Department</th></tr>";
foreach ( $records as $rec ) {
if (!empty($rec->department)) {
echo "<tr>";
echo "<td>". $rec->phnum . "</td>";
echo "<td>". $rec->department . "</td>";
echo "</tr>";
}
} //end for
} else {
echo "<tr><td colspan='5'>No matching data</td></tr>";
}
It says the object type is 'array'. I've been playing with count() vs. sizeof()
Any tips would be appreciated.
So it shows the correct number of rows in the table, but the count shows more than what's in the displayed table?
Try to use msqli_num_rows after your query
Here's an example below, you'll have to change it to your needs since you didn't provide your query code
$sql = "SELECT * FROM table_name WHERE datarow='$datarow'";
$result = mysqli_query($conn, $sql);
//this is where you count the number of rows returned from this query.
$count = mysqli_num_rows($result);
If this doesn't work, there's a problem with your query not meeting the specifications that you desire.
I'm putting together something that's mean to allow for a user to book seats for a cinema showing. The row and seat numbers for every showing are stored in the database. I'm currently extracting them in the following method so that users can click on a seat button to select that seat for their booking:
echo "<form>";
echo "<table>";
while($row = mysqli_fetch_assoc($result)){
$rownum = $row['row'];
$seat = $row['seat'];
echo "<tr><td><button type=\"submit\" name=\"seatsel\" value=\"$rownum$seat\">$rownum$seat</button></td></tr>";
}
echo "</table>";
Right now this just outputs html showing all of the buttons as a single row in the table. I'd like the output to show seating across a single table row for every one of the table rows in the cinema screen. I'm not sure how to do this exactly given that each row is of differing lengths. E.g row A has twelve seats while row C has eight.
What would be the best way of accomplishing this?
You could easily update your code so that you will get a new table row every time the mysql row has another value. One thing to note is that you might want to add (depending on whether you're already sorting your results) the following ORDER BY row,seat.
echo "<form>";
echo "<table>";
echo "<tr>";
while($row = mysqli_fetch_assoc($result)){
if (!isset($oldrownumber)) $oldrownumber = $row['row'];
else if ($oldrownumber != $row['row']) {
echo "</tr><tr>";
$oldrownumber = $row['row'];
}
$rownum = $row['row'];
$seat = $row['seat'];
echo "<td><button type=\"submit\" name=\"seatsel\" value=\"$rownum$seat\">$rownum$seat</button></td>";
}
echo "</tr>";
echo "</table>";
Coming back to my project after putting it down for a while: Cycling through a query.
I understand that the below code can be cleaned up (PHP usage and table arrangement) and that MySQL commands are deprecated. ( I am working on that part).
But I can't see why I can't make this work. The print_r() gives Resource ID #5 error. My results show 2 tables, each with identical results all from the same course. I am expecting 8 tables, each table with a different course.
Should I use a while loop? if so how? I realize this is elementary, but this is still all new to me so please be gentle.
<?php
include 'inc.php';
$varVeh=$_POST['Veh_num'];
$sql_course="select course_num from hc_course";
$results_course=mysql_query($sql_course);
print_R($results_course);
foreach(mysql_fetch_array($results_course) as $rc)
{
$sql_HiScores = "SELECT c.course_name as course, e.distance as distance, e.score as score, e.time as time, e.user as User from hc_entries e left join hc_course c on e.course=c.course_num WHERE c.course_num=$rc and e.vehicle=$varVeh ORDER BY course, score DESC ";
$result_HiScores = mysql_query($sql_HiScores);
$sql_vehName="select Veh_name from hc_vehicle_type where Veh_num=$varVeh ";
$result_vehName = mysql_query($sql_vehName);
$vehName=mysql_fetch_assoc($result_vehName);
echo "<table><tr><th>Best Scores for ".$vehName['Veh_name']."</th> </tr></table>";
echo "<table border='1'>";
echo "<tr><th>Course</th><th>Score</th><th>Distance</th><th>Player</th><th>Time</th></tr>";
while($row = mysql_fetch_array($result_HiScores))
{
echo "<tr>";
echo "<td>" .$row['course'] . "</td>";
echo "<td>" .$row['score'] . "</td>";
echo "<td>" .$row['distance'] . "</td>";
echo "<td>" .$row['User'] . "</td>";
}
echo "</table>";
}
?>
mysql_fetch_array just returns one row of the results, not all the rows. Your foreach loop is just looping over the columns in the first row of results.
If you want to process all the results, you should write:
while ($rc = mysql_fetch_array($results_course))
Then inside your loop, you use $rc['course_num'] to get the course from that row.
But I don't understand why you need that first loop at all. You're JOINing the hc_courses and hc_entries tables in the first query inside the loop. Why don't you just use that same query, but without the c.course_num = $rc condition, so it gets all courses at once instead of doing them one course at a time? Loop over those results, and start a new table every time the course number changes.
Here's the query for that:
SELECT c.course_name as course,
e.distance as distance,
e.score as score,
e.time as time,
e.user as User,
c.course_num as course_num
FROM hc_entries e
JOIN hc_course c ON e.course=c.course_num
WHERE e.vehicle=$varVeh
ORDER BY course, score DESC
The PHP then looks like:
$last_course = null;
while ($row = mysql_fetch_assoc($results_HiScores) {
if ($row['course_num'] !== $last_course) {
// New course number, start a new table
if ($last_course !== null) {
// Close out last table, if any
echo '</table>';
}
$last_course = $row['course_num'];
echo "<table><tr><th>Best Scores for ".$vehName['Veh_name']."</th> </tr></table>";
echo "<table border='1'>";
echo "<tr><th>Course</th><th>Score</th><th>Distance</th><th>Player</th><th>Time</th></tr>";
}
echo "<tr>";
echo "<td>" .$row['course'] . "</td>";
echo "<td>" .$row['score'] . "</td>";
echo "<td>" .$row['distance'] . "</td>";
echo "<td>" .$row['User'] . "</td>";
echo "</tr>";
}
if ($last_course !== null) {
echo "</table>";
}
And you shouldn't do the hc_vehicle_type query inside the loop. It doesn't use any variables that change during the loop, it's just looking up the name of $_POST['Veh_num']. Just do it once and reuse the result inside the loop.
try:
foreach(mysql_fetch_array($results_course, MYSQL_ASSOC) as $rc)
{
....
}
if second argument is not given, MYSQL_BOTH is assumed, so array has column name, and column number 0,1...,n . so you traversed result set twice (column name and column number)
RTMF : http://us1.php.net/manual/en/function.mysql-fetch-array.php
and The print_r() gives Resource ID #5 error this is not an error!. return value of mysql_query() is result set. it's just a Resource of PHP internal structure.
I have a database of images which I want to output as a gallery ...
I want to display each image in its own cell <td>image1</td> and limit the number of cells to 7 per row.
<tr>
<td>image1</td><td>image2</td><td>image3</td><td>image4</td><td>image5</td><td>image6</td><td>image7</td>
</tr>
Then a new row would be created and continue to output all the images.
<tr>
<td>image8</td>
and so on ..
I know how to do a query, but I am lost as to how to assemble the rows into the format I am looking for.
Can anyone please help me it would be greatly appreciated. Thanks.
First run your query, then get the mysql_fetch_assoc in a variable. Then echo your beginning tags for the table and tr. Then create a foreach loop of the query assoc, as another variable such as row, and echo $row['image'] in a td. This will add a new td with the image for every entry in the database. Then echo your closing tags for the tr and table.
$query = mysql_query("SELECT image FROM table_name");
$query_a = mysql_fetch_assoc($query);
echo "<table><tr>"
foreach ($query_a as $row)) {
echo "
<td>" . $row['image'] . "</td>
";
}
echo "</tr></table>";
Not tested, but try something like this
<table>
<?php
// make sure there is at least 1 row first
$cnt = 0;
$while($row = mysql_fetch_assoc($query))
{
if(++$cnt == 1) {
echo '<tr>';
} elseif($cnt % 7 == 0) {
echo '</tr><tr>';
}
// show images in <td>'s
echo "<td>" . $row['image']. "</td>";
}
echo '</tr>';
?>
</table>
Keep it simple:
Query the database to get the desired information, loop through the results, construct a new row come each new loop.
$sql = "Select * from table";
mysql_query($sql) or die(mysql_error());
if(mysql_num_rows !=0)
{
// Found at least one record, create table
echo "<table>";
echo "<tr>";
while($row = mysql_fetch_assoc($sql)
{
$cell_count = 0;
// Create a new row for each record found
echo "<td>" . $row['image_column']. "</td>";
$cell_count++;
if($cell_count == 7)
{
echo "</tr>";
echo "<tr>";
$cell_count = 0;
}
}
// Close the table
echo "</tr>";
echo "</table>";
}
I'm stuck and can't figure this out.
I have this piece of code which is basically generating a table taking data from SQL cursor.
I need to add one extra table row <tr> (which will be filled with additional info) after each row. I've tried putting the new row in several places, but there is never any output data for it. This is someone else's code that I'm trying to modify.
$top_i=min($pagesize-1,$numrows-$start);
for($i = 0;$i<=$top_i;$i++) {
if (($i%2)==1)
echo "<tr class='saraksts_row0'>";
else
echo "<tr class='saraksts_row1'>";
$res=mssql_query("fetch absolute ".($start+$i)." from saraksts_cursor ");
$row=mssql_fetch_array($res);
$itemp = 0;
foreach($fields as $field) {
$key = $field[0];
if($field[2]) {
eval($field[2] );
}
$itemp++;
$val = ($row[$key] == "") ? " " : $row[$key];
// Get rid of right and left border, set topmost border
$st="";
if ($itemp==1)
$st.="border-left-style:none;";
if ($itemp==$numfields)
$st.="border-right-style:none;";
if ($i==$top_i)
$st.="border-bottom-style:solid;";
echo "<td style='$st'>$val</td>";
}
$itemp = 0;
echo "</tr>\n";
}
The place where you want to add the extra row is after closing the first row and before the iteration moves to the next one. Note, it appears that you are doing some styling based on whether the row is odd or even. If you want this new row to have the same styling, I suggest you store the class you're applying to the preceding row so that you can also apply it to this row.
echo "</tr>\n";
echo "<tr><td>...</td><td>...</td></tr>\n"; /* Add the new row here */
}
...
$st.="border-bottom-style:solid;";
echo "<td style='$st'>$val</td>";
}
//Here we go
echo '<td style="blah">'.$yourotherinfo.'</td>';
$itemp = 0;
echo "</tr>\n";