I need help here in my practice program. I have a json array:
myData=[{"plank_number":"1","thickness":"5","width":"7","length_t":"8","quantity":"1"},
{"plank_number":"2","thickness":"5","width":"6","length_t":"7","quantity":"1"},
{"plank_number":"3","thickness":"6","width":"7","length_t":"8","quantity":"1"},
.........................(could be more)]
this array is generated everytime you add plank in my grid (jqgrid). I also have here a php file with some html tag. What I am confused about is how will I code my .php program so that it will accept my variable myData and create another table in from it.
EDIT
My questions are: How to POST a JSON array to an other page? and,
How to output the JSON array in an html table?
I have a submit button in here in my html file. And my variable myData is from my javascript file. Thanks
You have to use json_decode to convert the post data into a php associative array then you can loop through it and generate the table.
Something along the lines of....
<?PHP
$data = json_decode($_POST['myData'], true); // convert into a php array
$numrows = count($data); // count the number of rows you need
// generate the table
echo "<table>";
echo "<tr><td>plank number</td><td>thickness</td><td>width</td></tr>"; // your headings
for($i = 0; $i < $numrows; $i++)
{
echo "<tr>";
echo "<td>" . $data[$i]['plank_number'] . "</td>";
echo "<td>" . $data[$i]['thickness'] . "</td>";
echo "<td>" . $data[$i]['width'] . "</td>";
echo "</tr>";
}
echo "</table>";
?>
http://php.net/manual/en/function.json-decode.php
Not sure to understand your problem, but what about using "json_decode" PHP function ?
Related
I'm populating an html table with data from MySQL DB and I want to add a mailto function on the click of one of the columns. Problem is when I do it, the column is blank, but when I inspect it in the browser it shows up in the inspect panel.
My Code:
while ($row = mysqli_fetch_assoc($result)) {
echo "<tr>";
echo "<td>".$row['Property_ID']."</td>";
echo "<td>".$row['House_Number']."</td>";
echo "<td>".$row['Street_Address']."</td>";
echo "<td>".$row['Postal_Code']."</td>";
echo "<td>".$row['City']."</td>";
echo "<td>"."<a href='mailto:".$row['Submitted_By']."'></a>"."</td>";
echo "<td>".$row['Date_Submitted']."</td>";
echo "</tr>";
What the browser shows:
On inspection:
You <a> tag is empty, that's why you don't see your link.
You have to add your text inside <a> and </a>:
echo "<td>"
. "<a href='mailto:".$row['Submitted_By']."'>".$row['Submitted_By']."</a>"
. "</td>";
echo "<td>"."<a href='mailto:".$row['Submitted_By']."'>".$row['Submitted_By']."</a>"."</td>";
this line should be exactly like this.
I've got a data feed I'm importing that has a load of 'markets', I want to have a main page displaying all the markets, so for that id use a foreach loop to go through the data and on each market make a listing.
Each market has a bunch of attributes as well as nested participants, I want to then make a page for each market, that displays some information about each participant.
So the user would navigate to index.php > event.php?id101
This is the bit were ive become stuck, how can i send the user to the right page, I was thinking of using
<?php
$xml = simplexml_load_file('f1_feed.xml');
foreach($xml->response->williamhill->class->type->market as $event) {
$event_attributes = $event->attributes();
echo "<tr>";
// EVENT NAME WRAPPED IN LINK TO EVENT
echo "<td>";
echo '<a href="event.php?id=' . $market_id . '">';
echo $event_attributes['name'];
echo "</a>";
echo"</td>";
// DATE
echo "<td>";
echo $event_attributes['date'];
echo "</td>";
echo "</tr>";
}
?>
but how can I set a var $market_id (from the xml feed) to add to the end of the url, so it sends me to the right page ?
(f1_feed.xml is the same as the live xml feed, its just local for development)
the feed I'm using is http://whdn.williamhill.com/pricefeed/openbet_cdn?action=template&template=getHierarchyByMarketType&classId=5&marketSort=HH&filterBIR=N
which im bring in using simplexml
This worked for me;
$xml = simplexml_load_file("openbet_cdn.xml");
foreach($xml->response->williamhill->class->type->market as $market) {
// that gives an object (native)
$market_attributes = $market->attributes();
printf("%s\n",
$market_attributes->id,
$market_attributes->name);
// that gives an array (useless way!)
// $market_attributes = (array) $market->attributes();
// printf("%s\n",
// $market_attributes['#attributes']['id'],
// $market_attributes['#attributes']['name']);
}
I am trying to create a hyperlink from two pieces of text split over two cells in a table row.
I am generating my table using PHP to echo out the results from my database to a table.
When it echo's it generates a hyperlink with GET variables at the end which allow the user to visit a page relevant to that information.
The problem is that I can't seem to generate a hyperlink that will go across those table cells, I have looked around the web and there is nothing that says I cannot do this.
As you can see from the screenshot below I am generating a hyperlink inside one table cell but I want the other table cell to have the same hyperlink.
Code
while ($row = $db->fetch_assoc($newest))
{
echo "<tr>";
echo "<td>";
echo "<a href='manager.php?method=view&id=".$row['id']."'>".$row['first_name']." ". $row['second_name']. "</td><td>".$row['company_name']."</a>";
echo "</td>";
echo "</tr>";
}
I have a feeling that I will just have to generate two separate hyperlinks for the table cells.
However I am hoping someone here can prove me wrong and save me a few lines of code.
Thanks :)
Using native hyperlinks, you will have to create separate wrappers for each cell.
However, if you want to use JS for linking and redirecting, you could do something like:
.....
<tr class="clickable" data-href="http://google.com">
<td>cell-1</td>
<td>cell-2</td>
<td>cell-3</td>
</tr>
....
and then:
$(function(){
$('tr.clickable').click(function(){
window.location.href = $(this).attr('data-href');
});
});
Simply work around it with JS:
echo "<tr onclick=\"location.href='manager.php?method=view&id=".$info.";'\">";
If you do not want to break the table structure (ie. putting the name and the company into one (multi-column) cell), there is IMHO no way other than generating two hyperlinks.
What you might want to do is to use some CSS for a hover effect and some JavaScript to register a user clicked on a cell (which you can, given the structure above, associate with the tr element).
You can not do it like this. Try instead:
while ($row = $db->fetch_assoc($newest))
{
$url = "manager.php?method=view&id=".$row['id'];
echo "<tr>";
echo "<td>" . $row['first_name']." ". $row['second_name']. "</td>";
echo "<td>" . $row['company_name'] . "</td>";
echo "</tr>";
}
while ($row = $db->fetch_assoc($newest))
{
echo "<tr>";
echo "<td>";
echo "<a href='manager.php?method=view&id=".$row['id']."'>".$row['first_name']." ". $row['second_name']."</a></td><a href='manager.php?method=view&id=".$row['id']."'>".$row['company_name']."</a><td></td>";
echo "</td>";
echo "</tr>";
}
So... I have a mysql_fetch_array and I'm running into an issue when some of the mysql data contains single or double quotes. This is the dumbed down version of my code:
while($row=mysql_fetch_array($list)) {
echo "<tr>";
echo "<td onclick='edit_form(\"" . $row['item'] . "\");'>" . $row['item'];
echo "</td></tr>";
}
The edit_form() function is used to send the value of the current item back to the value of the input in the form so the user can then easily edit their entry and then sends an UPDATE command to mysql along with the proper primary key id (which I left out because of irrelevancy). The only issue I have is if a user puts single or double quotes into the form then it messes up the onclick attribute. Please help!! I am pretty new to php and can't figure this out. I've messed around with htmlentites() and html_entity_decode() but am still getting no where. Thank you so much!
Use htmlspecialchars on $row['item'] before inserting it in your document.
So your "dumbed-down" code should be:
while($row=mysql_fetch_array($list)) {
$item = htmlspecialchars($row['item']);
echo "<tr>";
echo "<td onclick='edit_form(\"" . $item . "\");'>" . $item;
echo "</td></tr>";
}
Try the below line instead of the original in your code and see if it works:
echo "<td onclick='edit_form(\"" . str_replace('"',""e;",$row['item']) . "\");\">" . $row['item'];
And where you would like to display the $item field, just replace it in reverse if you get "e; instead of ' " '. For example:
$qoute_free= str_replace('"e','"',$passed_value);
If you are using it in javascript, the function can be as below:
function edit_form(passed_value)
{
new_value=passed_value.replace(/"e;/g,'"');
}
I advise using json_encode. That way you don't have to worry about special cases htmlspecialchars might miss (such as newlines).
while($row=mysql_fetch_array($list)) {
echo "<tr>";
echo "<td onclick='edit_form(" . json_encode($row['item'], JSON_HEX_APOS) . ");'>" . $row['item'];
echo "</td></tr>";
}
I'm just putting the values back into my <form> (when they click on a <td>) and when they hit SUBMIT it directs the data to a different .php file that uses a MySQL UPDATE instead of an INSERT. I finally found some code that works!
$list is a mysql_query I ran at the top of the document
$item is the title of one of my columns in MySQL
while($row=mysql_fetch_array($list)){
$item = json_encode($row['item']);
$item = str_replace("'","'",$item);
echo "<td onclick='edit_form(" . $item . ");'>" . $row['item'] . "</td>";
}
Now it display's correctly in the <form> when <td> is clicked (by jQuery input.val($item)) and it shows up in the table correctly via $row['item']. I don't really understand exactly how it's working (how the encode is making it work) but I am glad it is. Crazyness!!!! Thanks for responding! and thanks for your effort!!
i want to call a php with jquery ajax to perform some database things and then return 2 lists of links. so i have to pass these two link lists back to jquery so it can display list 1 in the left side of the webpage and list 2 in the right side.
i created the lists in separate arrays that i send back to jquery with json_encode but i noticed that it escapes all the html characters.
<a>dog</a> became <a>dog<\/a>
so when i displayed the list in the html they werent links anymore.
how can i preserve the html codes in my returned arrays to jquery?
EDIT: is this the right way to go if you want to split up data from php so that jquery can display them in different locations in html?
// list 1
while($row = mysqli_fetch_assoc($saved_tags))
{
$display_saved_tags[] = "<a id='showtag' href='answer.php?id=" . $row['id'] . "'>" . $row['name'] . "</a><br />";
}
// list 2
while($row = mysqli_fetch_assoc($related_tags))
{
$display_related_tags[] = "<a id='showtag' href='answer.php?id=" . $row['id'] . "'>" . $row['name'] . "</a><br />";
}
// return lists to jquery
echo json_encode('display_saved_tags' => $display_saved_tags, 'display_related_tags' => $display_related_tags));
json_encode's escape characters directly conflict with HTML output. I have had the same issue but decided to use an alternative solution at the time. I just had a thought that you could perhaps do this:
$data = new stdClass();
$data->html1 = base64_encode('<h1>html in here</h1>');
$data->html2 = base64_encode('<p><strong>more html</strong></p>');
echo json_encode($data);
On the frontend:
callbackFunction(json) {
alert(base64_decode(json.html1));
alert(base64_decode(json.html2));
}
You would need the javascript implementations of base64_decode and utf8_decode which can be found at:
http://phpjs.org/functions/base64_decode:357
use can use below function to un-escape the chars when reading or sending on to the browser:
html_entity_decode('your response here');
Also because your are using json_encode, make sure that you don't need the below function in your code:
json_decode