Format the string using sprintf - php

Question

I have this string:
"[\"form\",\"form-elements\"], [\"company\",\"asdasd\"], [\"cod_postal\",\"051768\"], [\"recaptcha_challenge_field\",\"03AHJ_VuvJZjfMzRQolI_QhGijJqAEcRPswuz9l68I6VStJzTbuK4ilos06TIQKVsIy2vpe1PEq-Q5KBVlZ5xt4HM5VoJSWUgFTGVbtbmARtKiMvO4WZh57X0-QVDyQ5Lq-ZM8rMqB5O2-rCbnyw_UAGbbV1ZElsI4kuLk4ei6mzLtqgcU2VAR64tySiKPARDtahiTBKWePH2rjKO6KUBQTRE49TMjIGb5hg8sbYguKBSUrRF6G86b89M\"], [\"recaptcha_response_field\",\"168\"]"
This string was formated form an array using this code:
function arrayDisplay($input)
{
return implode(
', ',
array_map(
function ($v, $k) {
return sprintf('["%s","%s"]', $k, $v);
},
$input,
array_keys($input)
)
);
}
And encoded using :
$xml_array = arrayDisplay($_POST);
$xml_encode = json_encode($xml_array);
And this is the array in $_POST variable:
array (size=5)
'form' => string 'form-elements' (length=13)
'company' => string 'asdasd' (length=6)
'cod_postal' => string '051768' (length=6)
'recaptcha_challenge_field' => string '03AHJ_VuvJZjfMzRQolI_QhGijJqAEcRPswuz9l68I6VStJzTbuK4ilos06TIQKVsIy2vpe1PEq-Q5KBVlZ5xt4HM5VoJSWUgFTGVbtbmARtKiMvO4WZh57X0-QVDyQ5Lq-ZM8rMqB5O2-rCbnyw_UAGbbV1ZElsI4kuLk4ei6mzLtqgcU2VAR64tySiKPARDtahiTBKWePH2rjKO6KUBQTRE49TMjIGb5hg8sbYguKBSUrRF6G86b89M' (length=249)
'recaptcha_response_field' => string '168' (length=3)
First I want to wrap the entire string replacing "" with [] :
[[\"form\",\"form-elements\"], [\"company\",\"asdasd\"], [\"cod_postal\",\"051768\"], [\"recaptcha_challenge_field\",\"03AHJ_VuvJZjfMzRQolI_QhGijJqAEcRPswuz9l68I6VStJzTbuK4ilos06TIQKVsIy2vpe1PEq-Q5KBVlZ5xt4HM5VoJSWUgFTGVbtbmARtKiMvO4WZh57X0-QVDyQ5Lq-ZM8rMqB5O2-rCbnyw_UAGbbV1ZElsI4kuLk4ei6mzLtqgcU2VAR64tySiKPARDtahiTBKWePH2rjKO6KUBQTRE49TMjIGb5hg8sbYguKBSUrRF6G86b89M\"], [\"recaptcha_response_field\",\"168\"]]
And exclude [\"form\",\"form-elements\"] , [\"recaptcha_challenge_field\",\"03AHJ_VuvJZjfMzRQolI_QhGijJqAEcRPswuz9l68I6VStJzTbuK4ilos06TIQKVsIy2vpe1PEq-Q5KBVlZ5xt4HM5VoJSWUgFTGVbtbmARtKiMvO4WZh57X0-QVDyQ5Lq-ZM8rMqB5O2-rCbnyw_UAGbbV1ZElsI4kuLk4ei6mzLtqgcU2VAR64tySiKPARDtahiTBKWePH2rjKO6KUBQTRE49TMjIGb5hg8sbYguKBSUrRF6G86b89M\"] and [\"recaptcha_response_field\",\"168\"]
What I can use to do that and how ?

Answer 1

You must filter the input. After filtering it you just return the json encoded string:
function arrayDisplay($input)
{
$input = array_filter($input, function ($key) {
return !in_array($key, array('form', 'recaptcha_challenge_field', 'recaptcha_response_field'));
}, ARRAY_FILTER_USE_KEY);
return json_encode(array($input));
}
If you still want to return the key-value pairs separated by comma then keep the original implode function and concatenate the result with the squared brackets:
function arrayDisplay($input)
{
$input = array_filter($input, function ($key) {
return !in_array($key, array('form', 'recaptcha_challenge_field', 'recaptcha_response_field'));
}, ARRAY_FILTER_USE_KEY);
return '[' . implode(
', ',
array_map(
function ($v, $k) {
return sprintf('["%s","%s"]', $k, $v);
},
$input,
array_keys($input)
)
) . ']';
}
Please note that $xml_encode = json_encode($xml_array); makes no sense as the returned string is "almost" a valid json encoded string (in the original function). If this is your intention then you must use the first function I wrote and remove that line of code that is encoding again the returned value.

Answer 2

You should start from your $_POST array, and take the keys from it you really need:
$input = $_POST;
unset($input["form"]);
unset($input["recaptcha_challenge_field"]);
unset($input["recaptcha_response_field"]);
Now that $input array looks like this:
array(
"company" => "asdasd",
"cod_postal" => "051768"
);
Then, I would change the definition of your arrayDisplay function without altering its functionality, by splitting it into 2:
function arrayPairs($input) {
return array_map(
function ($v, $k) {
return [$k,$v];
},
$input,
array_keys($input)
);
}
function arrayDisplay($input) {
return implode (", ", array_map('json_encode', arrayPairs($input)));
}
This arrayDisplay function still returns the same values as before, but you can now also call arrayPairs without conversion to string. Instead you would do that conversion with json_encode which gives exactly the output you want:
echo json_encode(arrayPairs($input));
This outputs:
[["company","asdasd"],["cod_postal","051768"]]
NB: If you don't use the arrayDisplay function for any other purpose, then you can do away with it. This solution only uses the function arrayPairs.

Answer 3

I made some changes and ended up with this:
function arrayDisplay($input)
{
$goodKeys = array_diff(array_keys($input), array('form', 'recaptcha_challenge_field', 'recaptcha_response_field'));
var_dump($goodKeys);
$data = [];
foreach ($goodKeys as $goodKey) {
$data[$goodKey] = $input[$goodKey];
}
return '[' . implode(
', ',
array_map(
function ($v, $k) {
return sprintf('["%s","%s"]', $k, $v);
},
$data,
array_keys($data)
)
) . ']';
}
but now there is one more problem, I need to get rid of "" this 2 from the start/end of the string:
from this:
"[[\"company\",\"123\"], [\"cod_postal\",\"051768\"]]"
to this:
[[\"company\",\"123\"], [\"cod_postal\",\"051768\"]]