I had a function that took the serialized data, turned into array, added to the array to then push it back to the MySQL DB perfect....in php 7. When I uploaded for a client they have php 5.5.26 and now its not working. It looks like the unserialized variable still has a string, not array so it doesnt add to it.
What was working in php 7
$dashboard = DB::queryFirstField("SELECT dashboard_array FROM compel_dashboard
WHERE user_id = %i", $user_id);
$array = unserialize($dashboard);
array_push($array, $dashboard_item);
$query = DB::update('compel_dashboard', array(
'dashboard_array' => serialize($array)
), "user_id=%s", $user_id);
Whats going on:
$dashboard contains string(27) "s:19:"dashboard-recommend";"
$array contains string(19) "dashboard-recommend"
So obviously I cant push_array to a string. Whats going on? Why would this work with PHP 7?
Related
I have used JSON objects before and they work perfectly but the JSON objects that I made before have been from a result of fetched MySQL entries. Now, I am trying to make my own JSON object through an array in PHP and it shows correctly in the database but I cannot access any of the values like before.
$chatArray = array(
array(
'chatusername' => 'Troy',
'chatuserid' => '123',
'chatmessage' => 'Hello World'
),
array(
'chatusername' => 'Nick',
'chatuserid' => '124',
'chatmessage' => 'Testing'
));
$inputArray = json_encode($chatArray);
That is what I input into my database and like I said it works good. Then I call for it in a separate .php and get this
{"chat":"[{\"chatuserid\": \"123\", \"chatmessage\": \"Hello World\", \"chatusername\": \"Troy\"}, {\"chatuserid\": \"124\", \"chatmessage\": \"Testing\", \"chatusername\": \"Nick\"}]"}
It throws the "chat" out front which is the column name in my database which I am not sure why.
When I trace it I can only seem to trace it by
var messageArray:Object = JSON.parse(event.target.data);
trace(messageArray.chat);
Any time I try to reference say messageArray.chat.chatusername it returns an error.
I'm sorry I know it is probably a simple solution but I have been searching and working at it for a few hours now.
Any help is much appreciated! Thank you!
From the PHP code that generates your JSON output:
$stmt = $conn->prepare("SELECT chat FROM markerinfo WHERE markerid='$chatid'");
$stmt->execute();
$result = $stmt->fetch(PDO::FETCH_ASSOC);
echo json_encode($result);
Keep in mind that the chat column in your database contains a JSON-string.
This code is not decoding the JSON-string in your database, so $result will be an array containing a JSON-string as well:
$result = [
'chat' => '[{"chatusername":"Troy","chatuserid":"123","chatmessage":"Hello World"},{"chatusername":"Nick","chatuserid":"124","chatmessage":"Testing"}]'
];
By passing that array through json_encode(), you're double-encoding your JSON-string.
For your purposes, you can probably get away with:
echo $result['chat'];
But, if you want the chat column name to be included in your output, you will have to decode the stored JSON first:
$result['chat'] = json_decode($result['chat']);
echo json_encode($result);
Probably this is related to the php side when it encodes your array, it will escape it with slashes, and this confuses the JSON parsing in your JS side. Try to add the JSON_UNESCAPED_SLASHES option to your json_encode function like this:
$inputArray = json_encode($chatArray, JSON_UNESCAPED_SLASHES);
Check the json_encode function documentation for more details:
http://php.net/manual/en/function.json-encode.php
Confusing title, the basics are that I'm saving a fully sorted and ordered multidimensional array from a script and into MySQL. I then, on another page, pull it from the database and unserialize it, and then proceed to print it out with this,
$s = "SELECT * FROM gator_historical_data WHERE channelid = '{$chanid}'";
$r = $link->query($s);
$comboarray = array();
while ($row = mysqli_fetch_assoc($r)) {
$comboarray[] = unserialize($row['dataarray']);
}
foreach ($comboarray as $item) {
$desc = $item['content']['description'];
$title = $item['content']['title'];
$datetime = $item['datetime'];
// ... ^^^ problems getting array data
}
The problem is that it doesn't take the full array from MySQL, only the first entry and thus only prints the first 'array'. So where the returned value from dataarray looks like this (var_dump): http://pastebin.com/raw.php?i=Z0jy55sM the data stored into the unserialized $comboarray only looks like this (var_dump): http://pastebin.com/raw.php?i=Ycwwa924
TL;DR: Pulling a serialized multidimensional array from a database, unserializing and it loses all arrays after the first one.
Any ideas what to do?
The string you've got is a serialized string plus something more at the end that is also a serialized string again and again:
a:3:{s:6:"source";s:25:"World news | The Guardian";s:8:"datetime ...
... story01.htm";}}a:3:{s:6:"source";s:16:"BBC News - World";
^^^
This format is not supported by PHP unserialize, it will only unserialize the first chunk and drop everything at the end.
Instead create one array, serialize it and store that result into the database.
Alternatively you can try to recover for the moment by un-chunking the string, however in case the paste was done right, there are more issues. But on the other hand the paste obvious isn't the done fully correct.
What I'm trying to Do is so simple yet everything I tries had failed. I have the following string: "{"msg":"background1.jpg"}", and I want to convert it to an array to access the msg value. this should simply be done like so(or so I've thought):
$theString = "{"msg":"background1.jpg"}";
var_dump(json_decode($theString, TRUE));
The vr_dump() is dumping NULL, also tried:
var_dump(json_decode(json_encode($theString), TRUE));
This dumps string(45) "{"msg":"background1.jpg"}"
and tried many many more things, but all failed. Any thought please.
EDIT:
I'm getting the json string from database, where i have previously stored like so:
$toBeStored = json_encode(array("msg" => $value));
Try this
$var = '{"msg": "background1.jpg"}';
var_dump($var);
`
In my php file im using the following,
$obj = ($_POST['data']);
var_dump(json_decode($obj,true));
And i see this result. Is this the correct format? and how do i access the array.
eg, set a new variable $newID the same as row1 id
array(4) {
["row0"]=>
string(92) "{"id":"157","name":"123","basic":"123123123","submitter":"Keith","status":"review"}"
["row1"]=>
string(169) "{"id":"158","name":"TEST RESOURCE","basic":"Please state the type of work.","submitter":"Keith","status":"review"}"
["row2"]=>
string(107) "{"id":"159","name":"TEST OTHER","basic":"testing for other","submitter":"Keith","status":"review"}"
["row3"]=>
string(160) "{"id":"160","name":"Name","basic":"type of work","submitter":"Keith","status":"review"}"
}
heres whats in POST in firebug
data {"row0":"{\"id\":\"157\",\"name\":\"123\",\"basic\":\"123123123\",\"submitter\":\"Keith\",\"status\":\"review\"}","row1":"{\"id\":\"158\",\"name\":\"TEST RESOURCE\",\"basic\":\"Please state the type of work.\",\"submitter\":\"Keith\",\"status\":\"review\"}","row2":"{\"id\":\"159\",\"name\":\"TEST OTHER\",\"basic\":\"testing for other\",\"submitter\":\"Keith\",\"status\":\"review\"}","row3":"{\"id\":\"160\",\"name\":\"Name\",\"basic\":\"type of work\",\"submitter\":\"Keith\",\"status\":\"review\"}"}
Each "row" of the array is another JSON string. It seems like the data was double-encoded, like:
$array = json_encode(
array(
'row0' => json_encode(array('id' => '157', ...)),
...
)
)
This is incorrectly encoded data, unless you wanted JSON objects inside JSON objects. To work with it, you need to json_decode each individual item again. Better though: fix the encoding step.
Ive got some generated arrays, and their variable names stored in another array like the following
$array1 = 4x119 array;
$array2 = 4x119 array;
etc ..
$var1= [
"array1",
"array2",
etc...
];
and trying to loop though them like this
foreach ($var1 as $loopitem){
var_dump($$loopitem[3]);
}
How can i make this less ambiguous ?
Currenly im fairly sure its looking for a variable called the contents of $loopitem[3] instead of looking at $arr1[3] as without the [3] the var dump returns correct
Without the [3]
array(4) {
[0]=>
array(119) {
rest of output
With [3]
NULL
Any suggestions ?
You can use ${$loopitem}[3] to make it readable and unambiguous. Actually I'd always use that syntax for variable variables since $$foo is easy to misread as $foo.
However, it would be even better not to use them at all and use an array instead!