Please could someone explain to me how could I adapt my code to make it so that if a record / value doesnt exist in the mysql table it will echo a piece of text? Thank you.
<?php
$reviews_set = get_reviews();
?>
<h3>Latest Reviews</h3>
<?php
while ($reviews = mysql_fetch_array($reviews_set)) {
?>
<div class="prof-content-box" id="reviews">
<div class="message_pic">
<?php echo "<img width=\"50px\" height=\"50px\" src=\"{$prof_photo}\">";?>
<?php echo "<strong>Review from {$reviews['display_name']}:</strong><br /><br/> {$reviews['content']} <br />";
?>
Use the ternary operator '?:'
Sample:
$you_var ?: 'you_text_if_not_exists'
Check your variables like that :
<?php (isset($reviews['display_name']) ? $reviews['display_name'] : "entry doesn't exists"; ?>
<?php
$reviews_set = get_reviews();
?>
<h3>Latest Reviews</h3>
<?php
if(mysql_num_rows($reviews = mysql_fetch_array($reviews_set))>=1)
{
while ($reviews = mysql_fetch_array($reviews_set)) {
?>
<div class="prof-content-box" id="reviews">
<div class="message_pic">
<?php echo "<img width=\"50px\" height=\"50px\" src=\"{$prof_photo}\">";?>
<?php echo "<strong>Review from {$reviews['display_name']}:</strong><br /><br/> {$reviews['content']} <br />";
}
} else {
echo 'No reviews available';
}
?>
If you want to check if table has rows, use following:
$num_rows = mysql_num_rows($reviews_set);
$num_rows will contain number of rows.
<?php
$reviews_set = get_reviews();
?>
<h3>Latest Reviews</h3>
<?php
if(mysql_num_rows($reviews_set) > 0) {
while ($reviews = mysql_fetch_array($reviews_set)) {
?>
<div class="prof-content-box" id="reviews">
<div class="message_pic">
<?php echo "<img width=\"50px\" height=\"50px\" src=\"{$prof_photo}\">";?>
<?php echo "<strong>Review from {$reviews['display_name']}:</strong><br /><br/> {$reviews['content']} <br />";
<?
}
}else{
echo "No Data";
}
?>
I hope this helps
Related
I want to get the input field dynamically based on the Number of field names in the database post your codes.
view page
<?php echo form_open('index.php/product/save_edit') ?>
<?php echo form_hidden('id',$product['id']) ?>
<div class="values">Name</div><br>
<?php echo form_input('name',$product['name']) ?>
<br>
<div class="values">Lenssensor</div><br>
<?php echo form_input('lenssensor',$product['lenssensor']) ?>
<br>
<div class="values">Price</div><br>
<?php echo form_input('price',$product['price']) ?>
<br>
<div class="values">Thickness</div><br>
<?php echo form_input('thick',$product['thick']) ?>
<br><br><br>
<?php echo form_submit('submit', 'Submit'); ?>
<br>
<?php echo form_close(); ?>
Controller edit code function
public function edit(){
$this->load->database();
$this->load->model('product_model');
$data['product'] = $this->product_model->product($this->uri->segment(3))[0];
$this->load->view('product_edit',$data);
}
Change the code to following
<?php echo form_open('index.php/product/save_edit')
$obj = new $this->product_model;
foreach ($obj as $key => $value) {
if($key == "id"){
echo form_hidden($key,$value)
}
else{
echo "<div class='values'>$key</div><br>".form_input($key,$value)."<br>" ;
}
} ?>
<br><br><br>
<?php echo form_submit('submit', 'Submit'); ?>
<br>
<?php echo form_close(); ?>
I am newer to PHP and I have a problem changing the resultDiv contents
if(mysql_num_rows($res)==0)
{
echo "<script>document.getElementById('resultDiv').innerHTML='No such flight';</script>";
// echo "<script>alert('No Such filght');</script>";
echo "No such flight";
}
else{
echo "<table border='1'><th>flight#</th><th>Dep. City</th><th>Arrival City</th><th>Dep. Date</th><th>Arrival Date</th><th>Total Seats</th>";
while($row=mysql_fetch_array($res))
echo "<tr><td>".$row['id']."</td><td>".$row['depCity']."</td><td>".$row['arrivCity']."</td><td>".$row['depDate'].
"</td><td>".$row['arrivDate']."</td><td>".$row['totalSeats']."</td></tr>";
echo "</table>";
}
</div>
<div id="resultDiv">
Result Div
</div>
Please avoid to use mysql_* function as it is deprecated in latest version. You can use mysqli or PDO.
You can display message like this :-
<?php
$message = (mysql_num_rows($res) == 0) ? 'No Such Flight' : '';
?>
<div id="resultDiv">
<?php echo $message;?>
</div>
You can do it like so:
<div id="resultDiv">
<?php
if (mysql_num_rows($res) == 0) {
echo "No such flight";
} else {
echo "Flight found";
}
?>
</div>
you have misspelled "resultDiv" in get element by id, also define the div before the if condition.
<div id="resultDiv">
Result Div
</div>
if(mysql_num_rows($res)==0)
{
echo "<script>document.getElementById('resultDiv').innerHTML='No such flight';</script>";
echo "No such flight";
}
This for each / if statement displays changes, and then right below it it displays the changes made.
I am trying to write an if statement that tells it not to show the h2 and the #change_box if there are no changes.
Help would be greatly appreciated.
<h2 class="changes"> Changes: </h2>
<div id="change_box">
<? foreach ($audit['Events'] as $event):?>
<?if ( $event['Type'] != 'Comment'):?>
<span class="field">
<?= $event['Field']?>
</span>:
<?= $event['Value'] ?>
<?=($event['Previous'])?>
<?endif?>
<?endforeach?>
</div>
<?php
if ($changes) { // You'll have to set this variable
//Echo all of your HTML
else {
//Echo the stuff you'd rather show if they didn't change anything
}
?>
To give you an idea of how I'd write your code
<?php
if ($changes) {
echo '<h2 class="changes">Changes:</h2>';
echo '<div id="change_box">';
foreach ($audit['Events'] as $event) {
if ($event['Type'] != 'Comment') {
echo $event['Field'] . </span> . $event['Value'] . $event['Previous'];
}
}
echo "</div>"
}
?>
You could wrap your code with an if like
if(count($audit['Events'])>0)
{
//Your code
}
Wny do you open and close php tags every time? Would be better to make everything in PHP and echo whenever you want to print HTML code.
<?php
echo "<h2 class=\"changes\"> Changes: </h2>";
echo "<div id=\"change_box\">";
foreach ($audit['Events'] as $event) {
if ( $event['Type'] != 'Comment') {
echo "<span class=\"field\">".$event['Field']."</span>";
echo $event['Value'];
echo "(".$event['Previous'] .")";
}
}
echo "</div>";
?>
please make space after each <? and make sure you enabled short tags
<?php if(is_array($audit['Events']) && $audit['Events']):?>
<h2 class="changes"> Changes: </h2>
<div id="change_box">
<?php foreach ($audit['Events'] as $event):?>
<?php if ( $event['Type'] != 'Comment'):?>
<span class="field">
<?php echo $event['Field'];?>
</span>:
<?php echo $event['Value']; ?>
<?php echo $event['Previous'];?>
<?php endif;?>
<?php endforeach;endif;?>
</div>
I would add each two result one div class
<?php while ($fetch = $db->fetch($query)) { ?>
<?php echo $fetch['title']; ?>
<?php } ?>
Output should be like this
<div class="one">
<div class="two">
<article>Title</article>
<article>Title</article>
</div>
</div>
<div class="one">
<div class="two">
<article>Title</article>
<article>Title</article>
</div>
</div>>
<?php
$i=0;
while ($fetch = $db->fetch($query)) { ?>
<?php if ($i%2==0) { ?>
<div class="one">
<div class="two">
<?php } ?>
<article><?php echo $fetch['title']; ?></article>
<?php if ($i++%2==1) { ?>
</div>
</div>
<?php } ?>
<?php } ?>
//Also is a good idea to verify if the <div> tags are closed
<?php if ($i%2==1) { ?>
</div>
</div>
<?php } ?>
$count = 0;
while ($fetch = $db->fetch($query))
{
if ($count == 0)
echo '<div class="one"><div class="two">';
if ($count < 2)
echo '<article>'.$fetch['title'].'</article>';
if ($count == 2)
{
echo '</div></div>';
$count = 0;
}
$count++;
}
<marquee behavior="alternate" scrolldelay="1" scrollamount="2">
<?php do { ?>
<?php echo $row_Recordset1['Name']; ?>:
<?php echo $row_Recordset1['Text']; ?>
•
<?php } while ($row_Recordset1 = mysql_fetch_assoc($Recordset1)); ?>
</marquee>
<?php mysql_free_result($Recordset1); ?>
Print a friendly message to the user instead of NULL:
<?php echo (NULL === $row_Recordset1['Text']) ? "No value" : $row_Recordset1['Text']; ?>
As xil3 illustrates, you can also use this pattern (from the docs):
// While a row of data exists, put that row in $row as an associative array
// Note: If you're expecting just one row, no need to use a loop
// Note: If you put extract($row); inside the following loop, you'll
// then create $userid, $fullname, and $userstatus
while ($row = mysql_fetch_assoc($result)) {
echo $row["userid"];
echo $row["fullname"];
echo $row["userstatus"];
}
The way you have it written right now, $row_Recordset1 will be null the first time it goes into the loop.
I've rewritten it for you:
<marquee behavior="alternate" scrolldelay="1" scrollamount="2">
<?php while($row_Recordset1 = mysql_fetch_assoc($Recordset1)) { ?>
<?php echo (($row_Recordset1['Name'] != null) ? $row_Recordset1['Name'] : 'n/a'); ?>:
<?php echo (($row_Recordset1['Text'] != null) ? $row_Recordset1['Text'] : 'n/a'); ?>
•
<?php } ?>
</marquee>
<?php mysql_free_result($Recordset1); ?>