I just don't understand, I have code like this:
$this->ci->db->select('liked_posts, liked_comments');
$q = $this->ci->db->get_where('users_fav', array('usr_id' => $this->_usrId));
$result = $q->result_array();
And when I, as always, tried to put it into foreach loop.. it's just didn't work.. Because in $result I've got and array where 2 more arrays where stored (table fields)
so to work in foreach loop it would look like this:
foreach($result[0] as $value)
not:
foreach($result as $value)
And I was looking for my mistake very long.. Maybe I really did something wrong... Or is it a bug?
edit:
print_r($result);
Array
(
[0] => Array
(
[liked_posts] => a:0:{}
[liked_comments] => a:0:{}
)
)
edit2:
But shoudn't it be like this:
Array
(
[liked_posts] => a:0:{}
[liked_comments] => a:0:{}
)
?? Or I'm starting to go crazy???
edit3:
My bad... I realized now... I'm just going crazy.. too much work done today... better go sleep :D Sorry guys
so you can do this
foreach($result as $value)
{
echo $value['fav_posts'];
}
no problem with that.
When using $result = $q->result_array(); you will get a multidimentional array as you have now.:
foreach( $resuls as $key => $each ){
echo "result : ".$each['column_name'];
}
but if you have just a single row fetched you would likely use $result = $q->row_array(); which will return a single dimentional array. And you can directly use like this:
echo $results['column_name'];
Related
Guys i have maybe a very simple question but i don't know how to make it.
How can i transform a following text into an array of variables.
$NotParsedString = "123456,654987,789456,321465";
foreach($results['data'] as $item){
$PostID = $item['id'];
if($PostID != $AnyIDfromNotParsedString){
echo 'Show this thing';
}
}
Simply i want to remove all the commas from $NotParsedString and make them as alone IDs which i can compare to $PostID and if $PostID is not same as any of theese IDs to echo 'Show this thing';
I hope you get the whole idea of what i am trying to do.
I want something like if $PostID is not equal to 123456 or if $PostID is not equal to 654987 and so on for the ones left till the end.
Can you help me out guys?
Thanks in advance!
Just use in_array() combined with explode() like this:
if(!in_array($PostID, explode(",", $NotParsedString))){
Just use the explode() function.
$NotParsedString = "123456,654987,789456,321465";
$ids = explode(',', $NotParsedString);
$ids will be as following.
Array
(
[0] => 123456
[1] => 654987
[2] => 789456
[3] => 321465
)
I know this should be very simple, but boy I'm making a mess of it... would be great if someone could point me in the right direction.
I've got an array which looks like this:
print_r($request_attributes['length']);
Array
(
[0] => 28.00000
[1] => 18.00000
)
and am trying to modify like so:
if(is_array($request_attributes['length'])) {
$request_attributes['length'] = $request_attributes['length'][0];
print($request_attributes['length']);
$request_attributes['length'] = $request_attributes['length'][1];
print($request_attributes['length']);
}
which gives the correct output in the first update, but the second item outputs an '8'. I've tried the above in both a for and foreach which results in similar output for both this and the other two arrays ( width(8) and height(0) - they should result in 18.00000 and 13.00000 respectively ). So I guess I really have two questions:
1. How do I update this(these) element(s)?
2. Where are the funny outputs actually coming from?
If anyone can help, I'd really appreciated it.
Just have a look at this. Your problem is, that you override you variable and in the second step $request_attributes['length'] is a string. Just define another var for your values.
$request_attributes['length'] = [
28.000,
18.000
];
$attributes = array();
if (is_array($request_attributes['length'])) {
foreach ($request_attributes['length'] as $value) {
$attributes[] = $value;
}
}
As you see $attributes will contain all values of your $request_attributes['length'] array and will not be overwritten.
Define araay as below
$val=array([0]=>"18.000",[1]=>13.000)
then use
if(is_array($request_attributes['length'])) {
$request_attributes['length'] = $val;
print_r($request_attributes['length']);
$request_attributes['length'] = $val;
print_r($request_attributes['length']);
}
Previously your array doesnt have any name.
Your print will only return Just array not the values
use
print_r($request_attributes['length']) ;
instead
I am trying to copy array into another array in PHP. Then send the response as JSON output. But it copies only the last element in array multiple times. Please let me know where I am going wrong? Any help is appreciated
PHP code
stmt_bind_assoc($stmt, $resultrow);
while ($stmt->fetch()) {
$r[] = $resultrow;
print_r($resultrow);
}
echo json_encode($r);
Output from print_r($resultrow).This is correct. Values in array is different
Array( [a_id] => 1 [b_number] => 10101010 [dateandtime] => 2013-12-25 09:30:00 )
Array( [a_id] => 1 [b_number] => 20202020 [dateandtime] => 2013-12-27 11:40:00 )
Output from json_encode($r).This is incorrect. Values in array is same
[{"a_id":1,"b_number":20202020,"dateandtime":"2013-12-27 11:40:00"},
{"a_id":1,"b_number":20202020,"dateandtime":"2013-12-27 11:40:00"}]
You got the function stmt_bind_assoc from here: http://www.php.net/manual/en/mysqli-stmt.fetch.php#82742
Posted under that OP is:
"...the problem is that the $row returned is reference and not data.
So, when you write $array[] = $row, the $array will be filled up with
the last element of the dataset."
With that user's solution I came up with this to resolve your issue:
// replace your posted code with the following
$r = array();
// loop through all result rows
while ( $stmt->fetch() ) {
$resultrow = array();
foreach( $row as $key=>$value )
$resultrow[ $key ] = $value;
$r[] = $resultrow;
print_r($resultrow);
}
echo json_encode($r);
Next time you get code from a source read the comments about the source.
In a mysql database I store some image names without the exact path.
So what I like to do is add the path before I load the returned array into jQuery (json) to use it in the JQ Galleria plugin.
In the columns I've got names likes this:
11101x1xTN.png 11101x2xTN.png 11101x3xTN.png
Which in the end should be like:
./test/img/cars/bmw/11101/11101x1xTN.png
./test/img/cars/bmw/11101/11101x2xTN.png
I could just add the whole path into the database but that seems 1. a wast of db space. 2. Then I need to update he whole db if the images path changes.
I could edit the jQuery plugin but it doesn't seem practical to update the source code of it.
What is the right thing to do and the fasted for processing?
Can you add a string after you make a db query and before you fetch the results?
part of the function where I make the query:
$needs = "thumb, image, big, title, description";
$result = $get_queries->getImagesById($id, $needs);
$sth=$this->_dbh->prepare("SELECT $needs FROM images WHERE id = :stockId");
$sth->bindParam(":stockId", $id);
$sth->execute();
$result = $sth->fetchAll(PDO::FETCH_ASSOC);
this is the foreach loop:
$addurl = array('thumb', 'image', 'big');
foreach ($result as $array) {
foreach ($array as $item => $val) {
if (in_array($item, $addurl)){
$val = '/test/img/cars/bmw/11101/'.$val;
}
}
}
the array looks like this:
Array
(
[0] => Array
(
[thumb] => 11101x1xTN.png
[image] => 11101x1xI.png
[big] => 11101x1xB.png
[title] => Title
[description] => This a blub.
)
)
The url should be add to thumb, image and big.
I tried to change the array values using a foreach loop but that didn't work. Also not noting if the use of that would course a unnecessary slowdown.
well, you almost nailed it. only thing you forgot is to store your $val back in array.
foreach ($result as $i => $array) {
foreach ($array as $item => $val) {
if (in_array($item, $addurl)){
$val = '/test/img/cars/bmw/11101/'.$val;
$result[$i][$item] = $val;
}
}
}
however, I'd make it little shorter
foreach ($result as $i => $array) {
foreach ($addurl as $item) {
$result[$i][$item] = '/test/img/cars/bmw/11101/'.$array[$item];
}
}
}
Assuming your array looks like this:
$result = array("11101x1xTN.png", "11101x2xTN.png", "11101x3xTN.png");
A simple array_map() can be used.
$result_parsed = array_map(function($str) { return './test/img/cars/bmw/11101/'.$str; }, $result);
As seen Here
I'm trying to make a very basic php ORM as for a school project. I have got almost everything working, but I'm trying to map results to an array. Here's a snippet of code to hopefully assist my explanation.
$results = array();
foreach($this->columns as $column){
$current = array();
while($row = mysql_fetch_array($this->results)){
$current[] = $row[$column];
print_r($current);
echo '<br><br>';
}
$results[$column] = $current;
}
print_r($results);
return mysql_fetch_array($this->results);
This works, but the while loop only works on the first column. The print_r($results); shows the following:
Array ( [testID] => Array ( [0] => 1 [1] => 2 ) [testName] => Array ( ) [testData] => Array ( ) )
Can anybody shed some light?
Thanks in advance!
It's because you already fetched every row, and the internal pointer is at the end.
The next while, mysql_fetch_array() will immediately return false.
You can reset the pointer to the first row:
mysql_data_seek($this->results, 0);
Put this just before
while($row = mysql_...
I'm not sure you can use the -> operator in a variable name. As you trying to get the key and value out of the array $columns? If so, you want something like this:
foreach($columns as $k => $v) {
//in here, $k is the name of the field, and $v is the associated value
}