I am getting only the last element value, like in my case i am trying to get value of $dwnld_name
but don't know where i am missing, so only getting download name for the last record
<?php
global $cat_id;
$dwnld_sql = "SELECT * FROM wp_dm_downloads";
$dwnld_qry = mysql_query($dwnld_sql);
while($dwnld_row = mysql_fetch_array($dwnld_qry)){
echo $link = $dwnld_row['link'];
echo $dwnld_name = $dwnld_row['name'];
$cat_id = $dwnld_row['category'];
}
?>
<?php
$sql = "SELECT * FROM wp_dm_category";
$myquery = mysql_query($sql);
echo '<ul>';
while($row = mysql_fetch_array($myquery)){
$x = $row['name'];
echo $x_id = $row['id'];
?>
<li><a href="#"><?php echo $x; ?>
<?php if($x_id == $cat_id) { ?>
<ul>
<li><?php echo $dwnld_name; ?></li>
</ul>
<?php } ?>
</a></li>
<?php echo "<br/>";
}
echo '</ul>';
?>
It is because, you are taking the values from loop in strings.
Everytime loop runs, it overwrites the values by recent values.
You can create an array and append values to that and loop through that array using foreach
Corrected Code:
<?php
global $cat_id;
$dwnld_sql = "SELECT * FROM wp_dm_downloads";
$dwnld_qry = mysql_query($dwnld_sql);
$downloads = array();
while($dwnld_row = mysql_fetch_array($dwnld_qry)){
$downloads['link'] = $dwnld_row['link'];
$downloads['dwnld_name'] = $dwnld_row['name'];
$downloads['cat_id'] = $dwnld_row['category'];
}
?>
Now, loop through $downloads array.
Note: Do not use mysql_ functions are they are deprecated and will be removed in future versions of PHP.
You need to echo $dwnld_name in the loop, or save names into array.
With this solution you overwrite $dwnld_name variable in each loop and as a result after the loop you have the last record.
Related
I am trying to display the below table value in list and sub-list.
and here is my for loop to display
$sql ="SELECT *FROM objectives";
$result = $conn->query($sql);
$categories = array();
foreach ($result as $result) {
$category = $result['content'];
$categories[$category][] = $result['sub_content'];
}
?>
<ul>
<?php foreach ($categories as $category => $subcategories): ?>
<li>
<?php echo $category; ?>
<ul>
<?php foreach ($subcategories as $subcategory):?>
<li><?php echo $subcategory; ?></li>
<?php endforeach; ?>
</ul>
</li>
<?php endforeach; ?>
</ul>
The data is displayed in list and with sub list. I don't want to display the 0 value in the sub-list.
Everything is fine except the display of 0 in sub-list. Please advise.
try this if you just don't want to display 0
<?php echo ($subcategory != '0')? '<li>'.$test.'</li>' : ''; ?>
and if you don't want to store in array then put this if condition
foreach ($result as $result) {
$category = $result['content'];
if($result['sub_content'] != '0'){
$categories[$category][] = $result['sub_content'];
}
}
Simply implementing echo ($subcategory != '0')? '<li>'.$test.'</li>' : ''; will result in needless markup in the dom. Specifically, you will have empty <ul></ul> tags as nested lists where only a single row containing $subcategory is 0. (Demonstration) These extra bits of markup may cause funky side-effects when css/styling is applied.
Further refinements are advisable as a matter of best practice:
When querying the database, only SELECT the columns that you specifically require for your task.
Add stability to your process by using an ORDER BY clause that will group the rows by content and possibly sort sub_content
Never use more loops than necessary. This task can be (and therefore, theoretically, should be) performed in a single loop.
Recommended Code: (Demo)
$result = $conn->query("SELECT content, sub_content FROM objectives");
$category = null;
$output = '';
foreach ($result as $row) {
if ($category !== $row['content']) { // new parent
if ($category !== null) { // not first iteration
$output .= "<li>$category"; // print parent
if ($sublist) {
$output .= "<ul>$sublist</ul>"; // print all children
}
$output .= "</li>";
}
$category = $row['content']; // overwrite $category
$sublist = ''; // reset sublist
}
if ($row['sub_content'] !== '0'){ // filter row
$sublist .= "<li>{$row['sub_content']}</li>";
}
}
if ($result) { // in case the resultset is empty
echo "<ul>";
echo $output; // print stored markup
echo "<li>$category"; // print last parent
if ($sublist) {
echo "<ul>$sublist</ul>"; // print all children from last parent
}
echo "</li>";
echo "</ul>";
}
Source Code Output:
<ul>
<li>Demonstrate where to find the following documentation:
<ul>
<li>Operating and Safety Strategy</li>
</ul>
</li>
<li>Explain the different turbine main operating states:
<ul>
<li>Power Production</li>
<li>Idle</li>
<li>Stop</li>
</ul>
</li>
<li>Explain how to recognise the current operating mode on the display of the operating panel</li>
<li>Explain the subsystem operating modes:
<ul>
<li>Stop</li>
<li>Manual</li>
</ul>
</li>
<li>Explain the difference between local and remote point of operation</li>
<li>Explain that only one point of operation can be active at a time</li>
</ul>
Rendered Output: (courtesy of phptester.net)
I tried to make a search function, when your search a tag, its supposed to give you the images with that tag. When i just echo in the php code (line 101), it gives all the links. However, when i try to post it in the html, it only gives one result back.
php code
$postTags = "";
if (isset($_POST['Find'])) {
try {
$pdoConnect = new PDO("mysql:host=localhost;dbname=imdterest", "root", "");
} catch (Exception $exc) {
echo $exc->getMessage();
exit();
}
$postTags = $_POST['naam'];
$pdoQuery = "SELECT * FROM posts WHERE postTags = :tags";
$pdoResult = $pdoConnect->prepare($pdoQuery);
$pdoExec = $pdoResult->execute(array(":tags" => $postTags));
while ($row = $pdoResult->fetch(PDO::FETCH_ASSOC)) {
$postTags = $row['postImageUrl'];
//echo $postTags;
}
}
html code
<div class="search">
<img src="<?php echo $postTags; ?>">
</div>
the problem is that in your php code you have WHILE loop and you echo link for all found rows. That is why it prints all results. But also you don't store the values but overwrite it every while iteration. In your HTML you don't have while loop and you just print overwritten variable (probably last result).
You can either store the results in an array or move while loop to HTML location.
Storing into array:
$allResults = array();
while ($row = $pdoResult->fetch(PDO::FETCH_ASSOC)) {
$allResults[] = $row['postImageUrl'];
}
and then somewhere in your html code
<div class="search">
<?php
foreach ($allResults as $imageLink){
echo '<img src="' . $imageLink . '">";
}
?>
</div>
The variable $postTags is getting overwritten and will hold only last value of MySQL result set. Create an array and loop over it.
$postTags = array();
while ($row = $pdoResult->fetch(PDO::FETCH_ASSOC)) {
$postTags[] = $row['postImageUrl'];
}
In HTML:
foreach($postTags as $val)
{ ?>
<div class="search">
<img src="<?php echo $val; ?>">
</div>
<?php
} ?>
Change your while loop like this, As you are not using array next data will over write the previous and all you are left with one image link that is last image link. hence to prevent overriding use array.
$postTags=[];
while ($row = $pdoResult->fetch(PDO::FETCH_ASSOC)) {
$postTags[] = $row['postImageUrl'];
//echo $postTags;
}
And html code like this , As now you have multiple images you need to display all and for that you need to iterate and foreach is one method to iterate through array.
<?php
foreach ($postTags as $postTag) {
?>
<div class="search">
<img src="<?php echo $postTag; ?>">
</div>
<?php }?>
Im having a problem with my function.
The user is able to post text to the page and set categories to the article.
categories that is set is saved in mysql in this way: categorie1,categorie2,categorie3
So, I want my visitors to be able to choose categories by providing a list with all categories.
This is how im thinking:
<?php
$sql02 = "SELECT * FROM article ORDER BY id";
$result02 = mysql_query($sql02);
while($rad02 = mysql_fetch_array($result02))
{
?>
<?php
$before = "<li><a href='index.php?p=cmd&kat=TEST'>";
$string = $rad02["kategori"];
$newstring = str_ireplace(",", "<br>", $string);
$kat = $newstring;
?>
<li><a href='index.php?p=cmd&kat=<?php echo $kat; ?>'><php echo "$kat"; ?></a></li>
<?php
}
?>
But that does not work.. what am I doing wrong?
You don't need $kat = $newstring; and when you said echo "$kat"; you shouldn't put $kat into ""
Hope this helps
If every categorie has it's own id you can do this than with foreach loop like this
while($rad02 = mysqli_fetch_array($result02)){
$rads[] = $rad02;
}
foreach($rads = $rad02){
?>
<li><a href='index.php?p=cmd&kat=<?php echo $rad02['kategori']; ?>'><?php echo $rad02['karegori']; ?></a></li>
<?php } ?>
I want to run two seperate foreach loops on the one page, but only write my SQL once. For example see the below code, only the ul with the id of first runs, the second ul is empty.
<?php
$mylist = 'SELECT * FROM myTable';
$showlist = $pdo->prepare($mylist);
$showlist->execute();
?>
<ul id="first">
<?php foreach ($showlist as $rowid):;?>
<li><?php echo $rowid['id'] ?></li>
<?php endforeach; ?>
</ul>
<ul id="second">
<?php foreach ($showlist as $rowname):;?>
<li><?php echo $rowname['name'] ?></li>
<?php endforeach; ?>
</ul>
I thought renaming the as would allow me to use it again but this doesn't seem to be the case? What is the best approach here?
try:
<?php
$mylist = 'SELECT * FROM myTable';
$showlist = $pdo->prepare($mylist);
$showlist->execute();
$result = $showlist->fetchAll();
foreach ($result as $rowid) {
// do stuff
}
foreach ($result as $rowname) {
// do stuff
}
You'd need to stack your elements in an extra array first:
$mylist = 'SELECT * FROM myTable';
$showlist = $pdo->prepare($mylist);
$showlist->execute();
$rows = array();
foreach($showlist as $row) {
array_push($rows, $row);
}
echo "<ul>";
foreach($rows as $row) {
echo "<li>".$row['id']."</li>";
}
echo "</ul><ul>";
foreach($rows as $row) {
echo "<li>".$row['name']."</li>";
}
echo "</ul>";
I have two foreach loops. The first grabs a load of questions from Wordpress, the second is supposed to grab the multiple answers. This is straight forward had it not involved some randomisation of the questions, which makes it confusing.
This is the two foreach loops without them being randomised.
<?php
$repeater = get_field('step_by_step_test');
foreach( $repeater as $repeater_row ){ ?>
<p><?php echo $repeater_row['question']; ?></p>
<?php $rows = $repeater_row['answer_options'];
foreach ($rows as $row){ ?>
<?php echo $row['answer']; ?><br />
<?php } ?>
<?php } ?>
This loops through each question and also grabs the multiple answers.
How can I incorporate it randomising the questions? This is my attempt, this works for getting a random set of questions but I'm getting an error for the answers part (invalid argument supplied for foreach).
<?php
$amount = get_field('select_number_of_questions');
$repeater = get_field('step_by_step_test');
$random_rows = array_rand( $repeater, $amount );
echo implode(', ', $random_rows);
foreach( $random_rows as $repeater_row ){ ?>
<p><?php echo $repeater[$repeater_row]['question']; ?></p>
<?php $rows = get_sub_field('answer_options');
foreach ($rows as $row){ ?>
<?php echo $row['answer']; ?><br />
<?php } ?>
<?php } ?>
I use this plugin for wordpress - http://www.advancedcustomfields.com/
First I'm going to rewrite your first code block to not look like chewed cud.
<?php
$repeater = get_field("step_by_step_test");
foreach($repeater as $repeater_row) {
echo "<p>".$repeater_row['question']."</p>";
$rows = $repeater_row['answer_options'];
foreach($rows as $row) {
echo $row['answer']."<br />";
}
}
?>
And now for the magic: Add shuffle($rows) immediately before the foreach($rows as $row) { line, and the answers will appear in random order.
EDIT in response to comments: Start your code like this:
$repeater = get_field("step_by_step_test");
shuffle($repeater);
$repeater_limit = array_slice($repeater,0,5);
foreach($repeater_limit as $repeater_row) {
....