I'm trying to POST an array to a RESTful PHP API. The idea is to allow (n>0) records, each containing a remote_id, a dimension_id and a metric.
Here's my client Python:
data = urllib.urlencode([
("remote_id", 1),
("dimension_id", 1),
("metric",metric1),
("remote_id", 1),
("dimension_id", 2),
("metric",metric2)
])
response = urllib2.urlopen(url=url, data=data)
And here's my serverside PHP
<?php
print_r($_POST);
?>
This returns, predictably:
Array
(
[remote_id] => 1
[dimension_id] => 2
[metric] => 16
)
It looks to me like I'm overwriting every instance of remote_id, dimension_id and metric with the final values, which is unsurprising since they're all keyed with identical names.
What's the proper way to do this? I can see a horrible method with unique keys (1_remote_id, 1_dimension_id, 1_metric + 2_remote_id, 2_dimension_id, 2_metric) but that doesn't scale very well.
I guess I'm after something like this PHP, but in Python:
<?php
$observations = array();
$observations[] = [
"remote_id" => "a1",
"metric_id" => "foo",
"metric" => 1
];
$observations[] = [
"remote_id" => "a1",
"metric_id" => "bar",
"metric" => 2
];
?>
Appreciate any tips!
Sam
Don't quote me on this (I haven't done any PHP in a LOOONG time), but this may just work:
data = urllib.urlencode([
("remote_id[]", 1),
("dimension_id[]", 1),
("metric[]",metric1),
("remote_id[]", 1),
("dimension_id[]", 2),
("metric[]",metric2)
])
I would give it a try anyway.
Related
I am passing an array into my controller via axios.post request. I am trying to get the length of the $request array that I am passing to the controller. However, I keep recieving a "Parameter must be an array or an object that implements Countable" error.
Here is what my array looks like:
array (
0 =>
array (
'text' => 'It is this',
'question_id' => 98,
),
1 =>
array (
'text' => 'And it is that',
'question_id' => 98,
),
2 =>
array (
'text' => 'Also a little bit of this',
'question_id' => 98,
),
Here is what I have tried:
$count = sizeof($request));
$count = $request->length;
$count = count($request);
The only thing that has had even a little bit of success is doing:
$count = count($request[0])
This returns 2, which is for the elements inside the first array. It counts text, and question_id. While this is good progress this is not what I want
What I would like to see happen is to have the length of the entire $request object. In the example I gave above, I would like to either receive 2, (the end of 0,1,2) or 3 (the count of 0,1,2).
If $request is an Illuminate\Http\Request, it won't be directly countable.
You can count $request->all() or $request->input(), though.
What about:
count($request->all());
In as much as the accepted answer will count the number of items in the requests, it will not count the number of items in a single request request item say C. If you are sure that C is an array and C is part of the request then doing count($request->C) not e that count here is a regular PHP function
try ;
count($request->all());
I have the following array:
Array
(
[data.cars] => 44
[data.xp] => Array
(
[$gte] => 100
[$lte] => 500
)
[data.money] => Array
(
[$gte] => 200
[$lte] => 1000
)
)
When issuing this array to find it returns NULL.
Am I doing something wrong, I formated it according to this page, here:
http://us1.php.net/manual/en/mongo.sqltomongo.php
So basically, if I have
SELECT * FROM mytable WHERE data.cars = 44 AND data.xp >= 100 AND data.xp <= 500 AND data.money >= 200 AND data.money <= 1000
This query when run in the console gives exactly 4 results.
Here is the query:
{$and:[{"data.cars":44}, {"data.xp": {$gt:100, $lt:500}}, {"data.money": {$gt:200, $lt:1000}}]}
My array should work, but hey, it does not, please point me to what I'm doing wrong.
Thank you!
The query on MongoDB PHP should be formatted like this:
array(
'data.cars' => 44,
'data.xp' => array(
'$gt' => 100,
'$lt' => 500
),
'data.money' => array(
'$gt' => 200,
'$lt' => 1000
)
)
By doing json_encode() on two version of arrays, both at first sight seem identical, but as you will see, they are not, I discovered the "bug".
Both array's look like so:
array(
'data.cars' => 44,
'data.xp' => array(
'$gt' => 100,
'$lt' => 500
),
'data.money' => array(
'$gt' => 200,
'$lt' => 1000
)
);
One was hardcoded the other was dynamically built, but both json encoded were different, here they are:
{"data.cars":"44","data.xp":{"$gte":"100","$lte":"500"},"data.money":{"$gte":"200","$lte":"1000"}}
{"data.cars":44,"data.xp":{"$gte":100,"$lte":500},"data.money":{"$gte":200,"$lte":1000}}
The first array had the values as string, but couldn't see that on a regular print_r or a var_dump, so what I did was a force cast on the values and ... it WORKED :)
Thank you all guys for your effort and interest!
First of all it is really bad to use . or $ symbols in a keys name (and I actually thought that this is illegal ). This is because dot operator is used to access subdocuments.
So the first thing is to change that. The second thing is that you do not need $and there. So if you want to find the document, which has a = 1 and b = 2, then you do not need to do {$and : .... } all you need to do is {a : 1, b : 2}
This is primarily a PHP answer, but the methodology may in fact be language agnostic.
After running a CSV file through a simple parser, I was given a multidimensional array that resembled something akin to this:
array( 'estimated' =>
array(
array( "TITLE" => 'MAIN', "CURR_PERF" => 100, "POT_PERF" => 75 ),
array( "TITLE" => 'HEAT', "CURR_PERF" => 90, "POT_PERF" => 60 ),
array( "TITLE" => 'CO2', "CURR_PERF" => 56, "POT_PERF" => 40 ),
),
'actual' =>
array(
array( "TITLE" => 'MAIN', "CURR_PERF" => 100, "POT_PERF" => 75 ),
array( "TITLE" => 'HEAT', "CURR_PERF" => 89 , "POT_PERF" => 75),
array( "TITLE" => 'CO2', "CURR_PERF" => 40, "POT_PERF" => 20 ),
);
);
Now, horrific data structure to one side, without refactoring of the underlying parser - how would be the best way to ensure that you can access these in a specific order? Without necessarily touching the underlying parser?
If you loop through using a for()/foreach() loop you're only going to be able to read them in a linear order - increasing or decreasing down the elements. You're not necessarily going to be able to drill down and get the specific value required.
For instance, the CSV file could express the values for estimated in a different order to the values for actual; and it may be required that they are output in yet another order.
For example, here are three different orders off the top of my head:
-> MAIN HEAT CO2
-> HEAT MAIN CO2
-> CO2 HEAT MAIN
Furthermore, as is quite usual, the label names in the CSV file are not exactly user-friendly - so they need to be 'translated' (if you like) in to something more human-friendly. Naturally, without the use of lots of if() statements if preferable!
Given it's a very specific use case, but it's something I've seen before with regards to arrays being serialised - and often finding out that they are actually nested.
I've posted one possible solution, but would be happy to see others. (In the past when I've done similar I've never accepted my own answer ;)) I'm sure there must be a more elegant way than the one I've devised..!
This was the quickest (and neatest) solution I could come up with on the spot at the time, but it's not one that I take very much pride in..! It involves multiple loops, the use of several arrays and seems to be an over-engineered mechanism for doing something which should surely be pretty simplistic?
First of all I've created an associative array to use as a dictionary to look up translations for text strings found in the CSV file:
$tbl = array( "MAIN"=>"Main Costs",
"TOTAL"=>"Total Costs",
"CO2"=>"Gas expended" );
Next up, I created an array to use as an 'index' - I entered the key values here in the order I would like them to be accessed in the application:
$index = array( "MAIN", "TOTAL", "CO2" );
I then created two blank arrays and populated them with the data from the child arrays, by using a loop I was able to make them associative - allowing me to specify use the TITLE fields as keys:
$estimated = array();
$actual = array();
foreach( $bills['estimated'] as $bill ){
$estimated[ $bill['title'] ] = $bill;
}
foreach( $bills['actual'] as $bill ){
$actual[ $bill['title'] ] = $bill;
}
By doing this I could loop through them in a specific order, regardless of the order they were parsed in, like so:
for($i=0; $i<3; $i++){
$bill = $estimated[ $index[ $i ] ];
printf(" %s: %d ", $tbl[ $index[ $i ] ], $bill['CURR_PERF'] );
}
Which would output the following, in the order I specified:
// 1. Main Costs: 100
// 2. Total Costs: 90
// 3. Gas Expended: 56
Naturally, this order could easily be changed if required. It does however:
require using an array specifically to act as an index
require using two loops simply to initialise
uses a total of four extra arrays
If this array was assigned to variable $ary like:
$ary = array(
'estimated' =>
array(
array('TITLE' => 'MAIN', 'CURR_PERF' => 100, 'POT_PERF' => 75),
array('TITLE' => 'HEAT', 'CURR_PERF' => 90, 'POT_PERF' => 60),
array('TITLE' => 'CO2', 'CURR_PERF' => 56, 'POT_PERF' => 40),
),
'actual' =>
array(
array('TITLE' => 'MAIN', 'CURR_PERF' => 100, 'POT_PERF' => 75),
array( 'TITLE' => 'HEAT', 'CURR_PERF' => 89 , 'POT_PERF' => 75),
array( 'TITLE' => 'CO2', 'CURR_PERF' => 40, 'POT_PERF' => 20 ),
);
);
Your estimated array could be accessed like:
$newVar = $ary['estimated'][2]['CURR_PERF'];
$newVar would be 56. You can reassign a value as well, like:
$ary['estimated'][0]['POT_PERF'] = 300;
That first array in the estimated array used to be 75 and is now 300.
This is how you get and set specific values in a Multi-dimensional Array.
To sort the arrays, if you need to loop over and maintain their indexes, see PHP's uasort() function. This may take some work, on your part, to develop a cmp_function, but should do what you're looking for in a different way.
See,
http://www.php.net/manual/en/function.uasort.php
and
http://www.php.net/manual/en/function.usort.php ,
which explains cmp_function better.
First this is not a duplicate questions. I've looked through some similar problem and most of the answer is what I am using right now.
Here is the problem set up,
on PHP side
$array = array('name' => 'a', 'data' => array('0'=>15,'0.25'=>'18','0.35'=>19,'1' =>20));
echo json_encode($array);
on the JS side
data = $.parseJSON(data); // data is the return from the php script
above
As you can see the $array['data'] is an associative array with numeric number as its key and sorted in order. While parsing into JSON, javascript altered the order of that array and sorted 0 and 1 as numeric key and put them to the head of the object.
I know this is standard behavior for certain browser such as chrome, and IE9.
I've read somewhere that people suggest stick with array strictly if I want to maintain the order of the array.
But my question is how do you feed back an array from PHP to javascript as an array instead of using json object? Or is there other solution to this kind of problem . Thanks for the input in advance.
Thanks for the input in advance
Use an array to maintain order, and then an object to create the map. There are two ways. I would suggest:
$array = array('name' => 'a', 'data' =>
array(
array('key' => 0, 'value' => 15),
array('key' => 0.25, 'value' => 18),
array('key' => 0.35, 'value' => 19),
array('key' => 1, 'value' => 20),
)
);
echo json_encode($array);
Which will give you the JSON:
{
"name": "a",
"data": [
{"key": 0, "value": 15},
{"key": 0.25, "value": 18},
{"key": 0.35, "value": 19},
{"key": 1, "value": 20}
]
}
Then you will have order but to look up a certain key will be more difficult. If you want that to be easy you can return a mapping object as well like this:
$array = array('name' => 'a', 'data' =>
array(
"0" => 15,
"0.25" => 18,
"0.35" => 19,
"1" => 20,
),
'order' => array("0", "0.25", "0.35", "1")
);
echo json_encode($array);
Which will give you:
{
"name": "a",
"data": {
"0": 15,
"0.25": 18,
"0.35": 19,
"1": 20
},
"order": ["0", "0.25", "0.35", "1"]
}
One of these two methods of returning your data should prove to be the most useful for your specific use case.
Actually, it's PHP that takes the "0" and "1" keys and makes them numeric keys. This has nothing to do with your JavaScript.
There isn't any real way to work around this, but ideally your code should not rely on such things as "what order the keys of an object are in". It may be a better idea, just from what I see here, to separate the data into an array of keys and an array of values, then zip them back together on the JS side.
I'd suggest another field for storing order.
$array = array('name' => 'a',
'data' => array('0'=>15,'0.25'=>'18','0.35'=>19,'1' =>20),
'order'=> '0,0.25,0.35,1'
);
echo json_encode($array);
I'm having trouble trying to build an array in PHP which will output in the JSON format I am looking for. I will show you what I am trying to achieve and where I have got to so far:
[
{"data":[{"x":3,"y":0},{"x":10,"y":0}]},
{"data":[{"x":11,"y":0},{"x":13,"y":0}]},
{"data":[{"x":12,"y":1},{"x":17,"y":1}]}
]
I am looping through db results and trying to build arrays to output the above json, my php looks like this (which is obviously not right yet):
//build the data
$data = array(
array(
'x' => $age_start,
'y' => $ill_type
),
array(
'x' => $age_end,
'y' => $ill_type
)
);
$illnesses[] = $data;
This code outputs the following json:
[
{
[
[{"x":2,"y":6},{"x":2,"y":6}],
[{"x":2,"y":6},{"x":5,"y":6}],
[{"x":4,"y":6},{"x":4,"y":6}]
]
}
]
Any pointers on this would be great!
Basically, if you know your desired JSON output already, you can simply json_decode it to get it's representation in PHP. The var_export function prints the structure in parseable format. You can also use print_r or var_dump to dump the structure though.
$json = <<< JSON
[
{"data":[{"x":3,"y":0},{"x":10,"y":0}]},
{"data":[{"x":11,"y":0},{"x":13,"y":0}]},
{"data":[{"x":12,"y":1},{"x":17,"y":1}]}
]
JSON;
var_export( json_decode($json) );
The above approach is universal. Just decode and dump the structure. Then assemble your code to create this structure and encode.
do this:
$data['data'] = array(
array(
'x' => $age_start,
'y' => $ill_type
),
array(
'x' => $age_end,
'y' => $ill_type
)
);
Looking at the JSON string, you can see that:
it is an array (it is surrounded by [ and ])
each element is an object (surrounded by { and })
the objects have an element data that is itself an array
that array consists of two objects with an x and a y property
It is important to know that a JSON object is represented in PHP by an associative array (when json_encode()'ing, json_decode() has a specific parameter to use either a stdClass or an assoc. array).
So the php structure looks like this:
$data = array(
array('data' => array(array('x' => 3, 'y' => 0), array('x' => 10, 'y' => 0))
,array('data' => array(array('x' => 11, 'y' => 0), array('x' => 13, 'y' => 0))
,array('data' => array(array('x' => 12, 'y' => 1), array('x' => 17, 'y' => 1))
);