I have problems when trying to print on screen this string:
[(E/X)^x]^2
I'm not able to render it correctly here too, but (E/X) should be elevated to x, and then everything to 2.
I hope I was clear.
Thanks!
EDIT
I try to explain myself better. I have $colHeaders, which is an array of array used to give data to a table. In the second child array, title field, is the string I want to render as I asked in the question.
The string must be formatted.
$colHeaders = array(
array(
'title' => $this->translator->trans('price'),
'rowspan' => 2,
'colspan' => 0
),
array(
'title' => '[(E/X)^x]^ 2',
'rowspan' => 0,
'colspan' => 2
),
);
You don't need PHP, it's a simple HTML formatting using the tag. Basically the output you want is:
[(E/X)<sup>x</sup>]<sup>2</sup>
In PHP, you just need to echo that, as such:
echo '[(E/X)<sup>x</sup>]<sup>2</sup>';
Related
I am trying to get a YouTube RSS feed to work but I am struggling to get one of the attributes I need out of it. I have never seen part of the array starting with an # sign so I think it may be some sort of a special element but I'm not sure. Code below and what I have already tried after.
Feed:
<?php
$xml->entry =
SimpleXMLElement::__set_state(array(
'id' => 'yt:video:DjwM9SHJznM',
'title' => 'JD19AT - Joomla! in der Uni - Community-Arbeit als Lehrveranstaltung',
'link' =>
SimpleXMLElement::__set_state(array(
'#attributes' =>
array (
'rel' => 'alternate',
'href' => 'https://www.youtube.com/watch?v=DjwM9SHJznM',
),
)),
'author' =>
SimpleXMLElement::__set_state(array(
'name' => 'J and Beyond e.V.',
'uri' => 'https://www.youtube.com/channel/UCy6ThiEDnalZOd_pgtpBk1Q',
)),
'published' => '2019-03-30T16:49:53+00:00',
'updated' => '2019-05-09T16:56:18+00:00',
));
?>
Code:
$feed = $youtubeChannelFeed;
$xml = simplexml_load_file($feed);
$html = "";
This works $xml->entry->title;
but this doesn't $xml->entry->link it just says "SimpleXML Object"
As it says object I then tried using both -> arrow and ['attribute'] notation.
I tried escaping the # with a \# but that just caused an error.
How can I traverse the tree and get the value of to #attributes->href ?
The way I always try to remember this is that you can use an arrow or brackets to access data in an array or object.
Array begins with A, but it chooses the one that's does not begin with A. Object is the one left over. That's how I remember it at least.
In this case, although it was calling it a SimpleXMLObject it was actually showing me that it's an array in the print_r. So I had to use brackets to access like so:
$xml->entry->link[0]['href']
I couldn't work out how to access #attributes but I remember now that you don't need to know the name to access it, you can do it using number format too.
If I'm honest I don't really know how I could access the first part with arrows as that appears to be an array too.
This is driving me mad.. I have a PHP script that returns an array in the form $key => $value and I want to rename the key so that I can display it in a table header. I saw there are several ways of doing this but I'm not sure they are what I need... Either that or I haven't understood the examples correctly which is the likely problem.
Basically my array keys differ each time I iterate over a foreach loop and also some can be blank. How can I get round this?
The first output might look like this:
'_can_chaccess' => false,
'_can_chown' => false,
'_can_delete' => false,
'_can_modify' => false,
'_can_read' => true,
'assigned_to_name_879' => 'Unassigned',
'id' => 1,
'type' => 'Private::Reporting::DataViewModel::DataView_223_42858',
'type_877' => 'Email',
The next run through, I might get this:
'_can_chaccess' => false,
'_can_chown' => false,
'_can_delete' => false,
'_can_modify' => false,
'_can_read' => true,
'assigned_to_name_793' => 'Consultants',
'id' => 1,
'object_reference_794' => 'CASE-1004',
'summary_795' => 'Deployment of New System for HQ (Project)',
'type' => 'Private::Reporting::DataViewModel::DataView_200_42858',
),
As you can see, some keys rename the same e.g. id, type. But the most important ones that I am interested in change each time e.g. Assigned To Name.
Any ideas?
Where do you receive your data from?
You can either somehow modify the source of your data, so if it were a query (what I do not assume here), you have the SELECT ... AS ... statement.
First you do need to know how to interpret the changing keys. If e.g. "assigned_to_name_879" and "assigned_to_name_793" is the same field, you can define a canonical function, which mapps both inputs to a unique output.
The output of the cannonical function and as well the other array keys can serve as keys for an additional array, which contains the table headers of your output.
So your current array is the value's array, and by hand you define a header's array:
array(
'assigned_to_name_879' => 'Name assignment'
);
This dynamic way of storing the table headers in an array only makes sense if you are using the array twice. Otherwise you could simply write the header in the html-code which you do output.
I've managed to figure it out using the below:
$mappings_array = array();
foreach ($report['data'][0] as $key => $value) {
$workbooks->log('Old Key', $key);
preg_match_all('([^_\d]+)', $key, $new_key);
$workbooks->log('New Key', $new_key);
$str = implode(" ", $new_key[0]);
$capitalised = ucwords($str);
array_push($mappings_array,$capitalised);
}
Maybe it's not the best solution but it works :) I get the following output:
> New array: «array (
0 => 'Can Chaccess',
1 => 'Can Chown',
2 => 'Can Delete',
3 => 'Can Modify',
4 => 'Can Read',
5 => 'Id',
6 => 'Total Type',
7 => 'Type',
8 => 'Type',
)
So I am trying to encode to JSON from MySQL and I need it in a [pagenumber][id,type,description][answerid,answerdescription] format. The goal of this is to read the data in a javascript file that will generate a multi step poll for me.
I will try to draw a pseudocode on how I want it to look right here:
{"pages":
[{1:
[{"id":1,"text":"U mad?","options":
[{"opt_id":1,"option":"yes","answer:''"},
{"opt_id":2,"option":"no","answer:''"},
{"opt_id":3,"option":"perhaps","answer:''"}]},
{"id":2,"text":"Got it?","options":
[{"opt_id":1,"option":"yes","answer:''"},
{"opt_id":2,"option":"no","answer:''"}]
}]
},
{2:
[{"id":3,"text":"Help me?","options":
[{"opt_id":1,"option":"yes","answer:''"},
{"opt_id":2,"option":"no","answer:''"},
{"opt_id":3,"option":"perhaps","answer:''"}]},
{"id":4,"text":"Please?","options":
[{"opt_id":1,"option":"yes","answer:''"},
{"opt_id":2,"option":"no","answer:''"}]
}]
}]
}
This is what I got so far, but I can't seem to think of a way to add the 3rd "dimension" to this, I want an array of [id => (int), description => (string)] attached to each question. And each question needs room for several answers connected to them. The last column in the answers/options array is for text strings (most answers are answered by ID numbers, but some are textareas that needs whole strings). this might not be needed as I can probably send the form results back by serializing.
$rows = array();
while($r = mysql_fetch_assoc($sth))
{
$Qid = $r['id'];
$page=$r['page'];
$type=$r['type'];
$Qdesc=$r['description'];
$rows[$page][] = array(
'id' => $Qid,
'type' => $type,
'description' => $Qdesc);
}
The result of this is the following (first 3 pages).
{
"1":[
{"id":"2","type":"1","description":"U mad?"},
{"id":"3","type":"1","description":"Got it?"},
{"id":"4","type":"1","description":"Help me?"}],
"2":[
{"id":"5","type":"1","description":"Please?"},
{"id":"6","type":"1","description":"Any clues?"}],
"3":[
{"id":"7","type":"2","description":"Foobar?"}]}
How about an options table?
id, option, answer
1, yes, ''
2, no, ''
3, perhaps, ''
(your answer data is always empty so I've included it for consistency)
Then for each question you would have an options field with "1,2,3" for all the options "1,2" for just yes/no etc..
To implement this you could:-
$options=array();
if(!empty($r['options']))
{
$sql="SELECT * FROM options_table WHERE id IN (".$r['options'].")";
$result=mysql_query($sql);
while($row=mysql_fetch_assoc($result){
$options[]=$row;
}
}
$rows[$page][] = array(
'id' => $Qid,
'type' => $type,
'description' => $Qdesc,
'options'=>$options);
This way you could add options to your hearts content
This is not an entire answer, but to help you start off, you could have:
json_encode(array("pages" => array(1 => $row1, 2=>$row2)));
Generally you can achieve multilevel nesting using array(..) within another array(..). Like:
json_encode(
array(
$item1,
$item2,
array(
"key1" => array(
1,
2,
array(
"inKey1" => array(4,5,6)
)
)
)
)
);
i'm trying to insert an implode generated string to an array that then later be used for json implementation
the implode generated string is look like this
'id' => $this->_SqlResult[0],'UserId' => $this->_SqlResult[1],'Msg' => $this->_SqlResult[2],'MsgStamp' => $this->_SqlResult[3]
i would like to used it in this code
$this->_JsonArr[]=array($Generated string);
to achieve something like this
$this->_JsonArr[]=array('id' => $this->_SqlResult[0],'UserId' => $this->_SqlResult[1],'Msg' => $this->_SqlResult[2],'MsgStamp' => $this->_SqlResult[3]);
instead i got something like this
$this->_JsonArr[]=array(" 'id' => $this->_SqlResult[0],'UserId' => $this->_SqlResult[1],'Msg' => $this->_SqlResult[2],'MsgStamp' => $this->_SqlResult[3]");
seem like generated string is treated as one element as key and value pair.
obviously i can get expected output from mysql because of this, can anybody help me with this
Why do you need to implode anything? Just pass the array:
$this->_JsonArr[] = your-non-imploded-array-here;
I think a full solution to what you want to do is something like this (i.e., the third code box in your question):
$row = array(
'id' => $this->_SqlResult[0],
'UserId' => $this->_SqlResult[1],
'Msg' => $this->_SqlResult[2],
'MsgStamp' => $this->_SqlResult[3]
);
$this->_JsonArr[] = $row;
$this->_JsonArr[]=array($Generated
string);
Looks like you want use arrays keys and values, but as I see you put into array plain string with expectation that array parse your plain string in format: keys => values.
You can try create array like below:
$this->_JsonArr[ $Generated_key ] = array( $Generated_value );
(Please correct me if I wrong understand your question).
I'm probably missing something simple here but I can't seem to find a way to build a query that will allow me to update a match in a group of nested values.
I have a document like this for a blog app I've been working on (currently uses MySQL):
array (
'_id' => new MongoId("4bc8dcee8ba936a8101a0000"),
'created' => '20100418-201312 +0000',
'post-title' => 'Some Post Title',
'post-body' => 'Blah Blah Blah Blah.',
'post-blog-name' => 'default',
'post-comments' =>
array (
0 =>
array (
'comment-title' => 'Test1',
'comment-body' => 'asdf1',
'created' => '20100418-214512 +0000',
'owner' => 'User1',
),
1 =>
array (
'comment-title' => 'Test2',
'comment-body' => 'asdf2',
'created' => '20100418-214512 +0000',
'owner' => 'User2',
),
),
'owner' => 'zach',
'updated' => '20100418-201312 +0000',
)
I'd like to be able to build a query that can search 'comment-title' for a match and then allow me to update/change/delete data as needed.
Obviously I can perform an update using a query which includes the key value. Something like this works:
$collection->update(
array("post-comments.0.comment-title" => $_POST['comment-title']),
array('$set' => array('entries.0' => array('comment-title' => $_POST['comment-title'], 'comment-body' => $_POST['comment-body'], 'owner' => $_SESSION['username'], 'updated' => gmdate('Ymd\-His O')))));
But I expect I'm missing something that would allow me to leave out the key and still be able to match one of the nested arrays based on a value (in this example the 'comment-title').
Anyway, sorry, this probably isn't the best example and I probably will end up using the keys in comments to identify them (comment #) but since nesting and creating rather complex objects seem to be a few of Mongodbs strong points I'm just hoping someone can point out what it is I might be missing.
A query to remove or update all comments by a specific user (say a user the blog author just black-listed) might be a better example. I'm not sure how I'd do this short of pulling out the entire document and then iterating through the nested arrays using PHP.
try ... notice I removed the "key"
$collection->update(array("post-comments.comment-title" ...
Cheers!