I have a problem, I fetched all the rows from DB using PDO::FETCH_OBJ.
The response is completely okay. But I would like to loop through it and add an element with name 'photo' to each object in the array. This photo will include a small image converted to string.
foreach ($rows as $row) {
$row->photo = file_get_contents($_SERVER['DOCUMENT_ROOT'] . '/xxx/uploads/'.$row->id.'/'.$row->filepath.'_thumbnail.jpg');
}
Pictures are being found without any problems, and even after I echo their content after I add it to $row, I get their contents without any problem too. But when I return the $rows variable, and I try to receive it in Android, the photo element is never there. What could be the problem?
This is how i return:
return base64_encode(json_encode($rows));
Example of output:
object(stdClass)#3 (10) {
["position"]=> string(1) "1"
["id"]=> string(2) "24"
["fbname"]=> string(12) "Vl Mar"
["filepath"]=> string(13) "1481809734438"
["photo"]=> string(5760) "������JFIF���� .....and many more characters
}
Formatting at the end of output is not important, as its not Base64 decoded.
Related
I'm having a difficult time understanding how to print out an attribute value of an object. The particular example I am working from is this:
object(SimpleXMLElement)#1 (1) {
["links"]=>
object(SimpleXMLElement)#4 (2) {
["#attributes"]=>
array(3) {
["total-matched"]=>
string(2) "31"
["records-returned"]=>
string(2) "10"
["page-number"]=>
string(1) "3"
}
I want to print the value of the links total-matched (which is 31). I've tried this: echo $object->links->total-matched; but I only get the value of 0.
How can I do this?
$object->links->total-matched evaluates as $object->link->total - matched (- is minus, I suppose you should see warning about using unknown constant - turn on error reporting). To access attributes with names like this you can do following: $object->links->{'total-matched'} although in this case, since it's SimpleXML attribute, I think you need to get attributes array:
$attr = $object->links->attributes();
echo $attr['total-matched'];
array(14) {
[0]=>
object(stdClass)#2 (2) {
["set_id"]=>
int(44)
["name"]=>
string(7) "Cameras"
}
[1]=>
object(stdClass)#3 (2) {
["set_id"]=>
int(38)
["name"]=>
string(11) "Cell Phones"
}
[2]=>
object(stdClass)#4 (2) {
["set_id"]=>
int(39)
["name"]=>
string(8) "Computer"
}
The Above is my Data.
I want to return the object names ["Set_ID"] etc and the value.
I have googled and googled and tried examples from here with various failures and now I'm giving up.
I have tried to simply manually return data - ie
foreach($result as $results2)
{
foreach($results2->name as $item)
{
echo "<pre>";
print_r($item);
echo "</pre>";
}
}
I have tried all sorts of flavors of it I had kind of hoped the above would at least return data and it didn't - just errored.
In the end, I'd like to be able to both pull names and data. I don't want to have to manually find element names and code it as $result->SET_ID or whatever - I want to be able to just feed SET_ID in as a variable. I think my problem lies with it being an array of objects and I cant access that object name and all..
Im a noob, so any kind of like detailed explanation wouldn't hurt my feelings so I can learn something.
Instead of foreach($results2->name as $item) use foreach($results2 as $item). $results2->name is not an array thus causing the error.
You can read about object iteration in PHP here
foreach($result as $results2)
{
echo $results2->name.' '.$results2->set_id;
}
The PHP code I am interating through is as follows for the Update process:
$data = $_POST;
foreach ($data['answers'] as &$d):
if(!isset($d['default'])):
$d['default'] = "false";
endif;
endforeach;
And when I var_dump it after that iteration, I get the following:
array(2) {
["question"]=>
string(20) "Which did you like?"
["answers"]=>
array(6) {
[0]=>
array(2) {
["default"]=>
string(4) "true"
["option"]=>
string(5) "First"
}
[1]=>
&array(2) {
["option"]=>
string(5) "Second"
["default"]=>
string(5) "false"
}
}
}
As you can see, the second array has "&array" keyword, I am assuming that's implying a reference. My question is, can I serialize this array and save it into MYSQL DB? I was getting some data error on the display page after, so I want to make sure if this has anything to do with this.
UPDATE
Error message I get on the display page is that
Undefined index: option
From the docs:
serialize() handles all types, except the resource-type. You can even serialize() arrays that contain references to itself. Circular references inside the array/object you are serializing will also be stored. Any other reference will be lost.
About yout error message, post the line youre calling the "option" index, so we can see what is going wrong...
And as Sammitch said, you can use serialize() to store this data in your DB.
I've got a codeigniter active record query that uses get('table_name')->result();
The output is below, what i'd like to do is unserialize(base_64_decode) the "venue_opening_hours" string and replace that string in the data structure with the result of the unserialized & base64_decoded data. I know i can array_walk to do this normally, but i don't see how to access that particular bit of data as an object within an array...
Thanks!
array(2) {
[0]=>
object(stdClass)#142 (4) {
["entry_id"]=>
string(2) "15"
["google-id"]=>
string(40) "552e7c08d3b86c14d130ebe43a0ba421d03a60ae"
["venue_opening_hours"]=>
string(148) "YToxOntzOjEzOiJvcGVuaW5nX2hvdXJzIjthOjE6e3M6NzoicGVyaW9kcyI7YToxOntzOjQ6Im9wZW4iO2E6Mjp7czozOiJkYXkiO3M6MToiNSI7czo0OiJ0aW1lIjtzOjQ6IjIzMTUiO319fX0="
["title"]=>
string(18) "Place Name"
}
[1]=>
object(stdClass)#143 (4) {
["entry_id"]=>
string(2) "18"
["google-id"]=>
string(40) "71d9c8e1f64f330637c96d30a0ae15533836a85e"
["venue_opening_hours"]=>
string(972) "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"
["title"]=>
string(24) "Other place name"
}
}
You'd access it using:
$array[0]->venue_opening_hours
in a for loop...
//foreach ($array as &$arrayItem)
//{
foreach ($arrayItem as &$object)
{
// extract and convert it...
//$openinghours = unserialize(base64_decode($object->venue_opening_hours));
// Update it...
$object->venue_opening_hours = $unserialize(base64_decode($object->venue_opening_hours));
}
//}
The &$object is a reference, so the assignment will change the value in the original result set...
Also I forgot to also loop the array ... I think! so added the outer loop :)
I use PHP and Simple XML.
I use a loop that does not work like expected:
foreach($item->Image->attributes()->source as $key => $value)
{
echo $value;
}
In the foreach I try to tell that I want to get the "source" of the image which is listed in the attributes.
$item above is created with a loop around my code above foreach($xml_content->Section->Item as $item {}, (if you need to know where it came from)
My object looks like this:
object(SimpleXMLElement)#36 (4) {
["Text"]=>
string(15) "Vinbergs socken"
["Description"]=>
string(73) "Vinbergs socken ingick i Faurås härad och ligger i Falkenbergs kommun.
"
["Url"]=>
string(44) "http://sv.wikipedia.org/wiki/Vinbergs_socken"
["Image"]=>
object(SimpleXMLElement)#38 (1) {
["#attributes"]=>
array(3) {
["source"]=>
string(113) "http://upload.wikimedia.org/wikipedia/commons/thumb/2/25/Faur%C3%A5s_Vinberg.svg/50px-Faur%C3%A5s_Vinberg.svg.png"
["width"]=>
string(2) "50"
["height"]=>
string(2) "41"
}
}
}
What is wrong with my loop in the beginning of my post?
Your are trying to iterate a string, not an array
$item->Image->attributes()->source
To iterate all the attributes of the Image element, use
foreach ($item->Image->attributes() as $attributeName => $attributeValue) {
If you just want to output the value of the source attribute, do not iterate but use the shorthand
echo $item->Image['source']
See this demo and the SimpleXml Basic Usage Examples in the PHP Manual