I have an issue with some json code where decimal numbers MUST be encoded without quotes and maintain two decimal places
e.g.
{12.34, 33.40, 25.00}
My problem is that the array I have creates the numbers as string
foreach($numbers as $n)
{
$result[] = number_format($n, 2, '.', '');
}
json_encode($result);
// result = {"12.34", "33.40", "25.00"}
You can use floatval():
$result[] = floatval(number_format($n, 2, '.', ''));
I had similar issie with this. This may not be the best code but it work for me. Maybe it can help you.
Try this (I am using codeigniter):
function getData() {
$data = $this->Teplomer_model->showData(); //get your data from database as return $query->result();
//create array
$arr = array();
//foreach data to array
foreach ($data as $row) {
$arr[] = array(
"id" => $row->id_teplota,
"datum" => $row->cas_teplota,
"teplota" => $row->teplota_teplota,
"vlhkost" => $row->vlhkost_teplota
);
}
//echo array as json and check if there is any numbers
echo json_encode($arr, JSON_NUMERIC_CHECK );
}
And output:
{"id":3,"datum":"2019-02-08 14:03:31","teplota":22.33,"vlhkost":19.7},{"id":4,"datum":"2019-02-08 14:18:35","teplota":23,"vlhkost":19}
You could do:
$result[] = (float) number_format($n, 2, '.', '');
Result:
[12.42,33.4,25]
Came across a similar problem. The only way to achieve this is to build the raw json object rather than using json_encode.
$jsonStr = '{';
$lastElement = count($numbers);
$i = 1;
foreach($numbers as $n)
{
$jsonStr .= number_format($n, 2, '.', '');
if($i != $lastElement){
$jsonStr .= ',';
}
$i++;
}
$jsonStr .= '}';
echo $jsonStr;
I know it's not the nicest way to code, but it's the only way to keep decimal points in a json object.
Related
I'm on PHP and I need to edit a JSON output to return only objects >=0 and divided by one hundred
Eg.
$json = {"data":[0,55,78,-32,-46,37]}
Needed
$json = {"data":[0,0.55,0.78,0.37]}
How this can be done?
Well, I know this is not the best practice, but if it's as simple as this, you can do the following.
$json = '{"data":[0,55,78,-32,-46,37]}';
// decoding the string to objects & arrays
$x = json_decode($json);
// applying a function on each value of the array
$x->data = array_map(
function($a)
{
if( $a >= 0 ) return $a/100;
else return null;
},
$x->data
);
// Removing empty values of the array
$x->data = array_filter($x->data);
// making a JSON array
$jsonData = json_encode(array_values($x->data));
// inserting a JSON array in a JSON Object
$json = '{"data":' . $jsonData . '}';
// here is your {"data":[0,0.55,0.78,0.37]}
echo $json;
Hope it helps !
Btw, I had to trick the json encode with array_values to prevent the creation of an object rather than an array for the data content. But I guess there is a better method that I just don't know ...
EDIT :
Find out the way :D
Once empty values removed from the array, just do :
$x->data = array_values($x->data);
$json = json_encode($x);
This will do the trick and it will not create issues with the rest of the object.
Alessandro:
Here's my approach, feel free to try. json_decode and a simple foreach can help you...
Code:
$json = array();
$result = array();
$json = '{"data":[0,55,78,-32,-46,37]}';
$decoded_json=json_decode($json, TRUE);
foreach ($decoded_json['data'] as &$value) {
if ($value >= 0){
$value = $value / 100;
$result[]=$value;
}
}
echo json_encode($result);
?>
Result:
[0,
0.55,
0.78,
0.37
]
I'm trying to convert my array to JSON.
My JSON is stored in the database and will later be decoded for permission checking.
Example,
How I want it to be stored in the database:
{ "admin": 1,
"create_posts": 1,
"edit_posts": 1,
"delete_posts": 1 }
How it is being stored now:
{"0":"\"admin\": 1",
"1":"\"create_posts\": 1",
"2":"\"edit_posts\": 1",
"3":"\"delete_posts\": 1"}
My code:
$check_list = $_POST['check_list'];
$list = array();
foreach($check_list as $key) {
$key = '"' . $key .= '": 1';
array_push($list, $key);
}
$json = json_encode($list, JSON_FORCE_OBJECT);
How would I make it so that it stores in the database like I want it to be?
I'm quite new to this, so any hints instead of direct answers is also much appreciated!
UPDATE:
JSON decode and validation:
$permis = json_decode($permissions->permissions, true);
echo ($permis['admin'] == true) ? 'allowed' : 'disallowed';
$arr = [ 'a', 'b', 'c' ];
echo json_encode(
array_combine(
$arr,
array_fill(0, count($arr), 1)
),
JSON_PRETTY_PRINT
);
Output:
{
"a": 1,
"b": 1,
"c": 1
}
http://us3.php.net/manual/en/function.array-combine.php
http://us3.php.net/manual/en/function.array-fill.php
I'm assuming the incoming data looks like this.
$incoming_data = "admin=1&create_posts=1&edit_posts=1&delete_posts=1";
$pairs = parse_str($incoming_data);
so we take the incoming pairs and use the $key as the array index so you don't get the extra array element index.
$permissions = array();
foreach($pairs as $key => $value){
$permissions[$key] = $value;
}
then we encode the new array to get the JSON you're looking for.
print json_encode($permissions);
will print out JSON like this:
{
"admin":"1",
"create_posts":"1",
"edit_posts":"1",
"delete_posts":"1"
}
The main thing to change in your code is this.
foreach($check_list as $key) {
$list[$key] = 1;
}
I need to sum all values of "initialContractualPrice" in http://www.base.gov.pt/base2/rest/contratos?&sort(-publicationDate).
I ned to do the operations in php.
who know that can help me?
thank you very much ;)
Try
$data = file_get_contents('http://www.base.gov.pt/base2/rest/contratos?&sort(-publicationDate)');
$data = json_decode($data);
foreach($data as $dat){
echo $dat->publicationDate;
}
You can also use print_r or var_dump to see the structure
This should take care of it.
// Get json from url
$url = 'http://www.base.gov.pt/base2/rest/contratos?&sort(-publicationDate)';
$content = file_get_contents($url);
// Decode json into an array
$json = json_decode($content, true);
// Set default
$total = 0;
// Loop through the array created when decoding json
foreach ($json as $key)
{
// remove symbol from the end leaving only digits
$value = substr(utf8_decode($key['initialContractualPrice']), 0, -1);
// remove the decimal point
$value = str_replace('.', '', $value);
// replace the comma with a decimal point
$value = str_replace(',', '.', $value);
// add this number to the total value
$total += $value;
}
echo $total;
I am querying a database for results and trying to convert them into JSON encodable array where the key will act as the name of the pair and the value is the value. How would I do this in the following code below?
foreach($results as $result) {
foreach( $result as $key => $value ) {
if ($key == 'D')
{
$trimmed = round($value, 4);
}
else
{
$trimmed = trim($value, "\n\r");
}
$array[$i] ="$key"."=>"."$trimmed";
}
$i = 0;
$jret = json_encode($array);
echo $jret;
}
For example:
<?php
$object[0] = array("foo" => "bar", 12 => true);
$encoded_object = json_encode($object);
?>
output:
{"1": {"foo": "bar", "12": "true"}}
dunno what you need and why you mimic PHP code instead of using it, but may be
$array[] = array($key => $trimmed);
is what you are looking for
with
$array[$i][$key] = $trimmed;
you could do
$return = json_encode($object, JSON_FORCE_OBJECT);
at the end
Let's say I have this:
$array = array("john" => "doe", "foe" => "bar", "oh" => "yeah");
foreach($array as $i=>$k)
{
echo $i.'-'.$k.',';
}
echoes "john-doe,foe-bar,oh-yeah,"
How do I get rid of the last comma?
Alternatively you can use the rtrim function as:
$result = '';
foreach($array as $i=>$k) {
$result .= $i.'-'.$k.',';
}
$result = rtrim($result,',');
echo $result;
I dislike all previous recipes.
Php is not C and has higher-level ways to deal with this particular problem.
I will begin from the point where you have an array like this:
$array = array('john-doe', 'foe-bar', 'oh-yeah');
You can build such an array from the initial one using a loop or array_map() function. Note that I'm using single-quoted strings. This is a micro-optimization if you don't have variable names that need to be substituted.
Now you need to generate a CSV string from this array, it can be done like this:
echo implode(',', $array);
One method is by using substr
$array = array("john" => "doe", "foe" => "bar", "oh" => "yeah");
$output = "";
foreach($array as $i=>$k)
{
$output .= $i.'-'.$k.',';
}
$output = substr($output, 0, -1);
echo $output;
Another method would be using implode
$array = array("john" => "doe", "foe" => "bar", "oh" => "yeah");
$output = array();
foreach($array as $i=>$k)
{
$output[] = $i.'-'.$k;
}
echo implode(',', $output);
I don't like this idea of using substr at all, since it's the style of bad programming. The idea is to concatenate all elements and to separate them by special "separating" phrases. The idea to call the substring for that is like to use a laser to shoot the birds.
In the project I am currently dealing with, we try to get rid of bad habits in coding. And this sample is considered one of them. We force programmers to write this code like this:
$first = true;
$result = "";
foreach ($array as $i => $k) {
if (!$first) $result .= ",";
$first = false;
$result .= $i.'-'.$k;
}
echo $result;
The purpose of this code is much clearer, than the one that uses substr. Or you can simply use implode function (our project is in Java, so we had to design our own function for concatenating strings that way). You should use substr function only when you have a real need for that. Here this should be avoided, since it's a sign of bad programming style.
I always use this method:
$result = '';
foreach($array as $i=>$k) {
if(strlen($result) > 0) {
$result .= ","
}
$result .= $i.'-'.$k;
}
echo $result;
try this code after foreach condition then echo $result1
$result1=substr($i, 0, -1);
Assuming the array is an index, this is working for me. I loop $i and test $i against the $key. When the key ends, the commas do not print. Notice the IF has two values to make sure the first value does not have a comma at the very beginning.
foreach($array as $key => $value)
{
$w = $key;
//echo "<br>w: ".$w."<br>";// test text
//echo "x: ".$x."<br>";// test text
if($w == $x && $w != 0 )
{
echo ", ";
}
echo $value;
$x++;
}
this would do:
rtrim ($string, ',')
see this example you can easily understand
$name = ["sumon","karim","akash"];
foreach($name as $key =>$value){
echo $value;
if($key<count($name){
echo ",";
}
}
I have removed comma from last value of aray by using last key of array. Hope this will give you idea.
$last_key = end(array_keys($myArray));
foreach ($myArray as $key => $value ) {
$product_cateogry_details="SELECT * FROM `product_cateogry` WHERE `admin_id`='$admin_id' AND `id` = '$value'";
$product_cateogry_details_query=mysqli_query($con,$product_cateogry_details);
$detail=mysqli_fetch_array($product_cateogry_details_query);
if ($last_key == $key) {
echo $detail['product_cateogry'];
}else{
echo $detail['product_cateogry']." , ";
}
}
$foods = [
'vegetables' => 'brinjal',
'fruits' => 'orange',
'drinks' => 'water'
];
$separateKeys = array_keys($foods);
$countedKeys = count($separateKeys);
for ($i = 0; $i < $countedKeys; $i++) {
if ($i == $countedKeys - 1) {
echo $foods[$separateKeys[$i]] . "";
} else {
echo $foods[$separateKeys[$i]] . ", \n";
}
}
Here $foods is my sample associative array.
I separated the keys of the array to count the keys.
Then by a for loop, I have printed the comma if it is not the last element and removed the comma if it is the last element by $countedKeys-1.