Fix PHP condition when decoding JSON - php

Question

I'm decoding a json file using php.
In foreach statement I check if my cd_driver is in the array coming from the json file content. If it's in the array the script updates its month as expected. If not, the script writes the new driver into the json file.
Everything works fine but it's also executing the else condition after updating its month and adding the same driver to the json file. Why is this happening?
$dados[] = array('cd_driver' => $cd_driver, 'Driver' => $RSx["ds_name"], 'month' => $cd_month, 'bsaldo' => $saldoToJson);
$dados2 = array('cd_driver' => $cd_driver, 'Driver' => $RSx["ds_name"], 'month' => $cd_month, 'bsaldo' => $saldoToJson);
$jsonString = file_get_contents('bsaldo.json');
$data = json_decode($jsonString, true);
if($data == ""){
$newString = json_encode($dados);
file_put_contents('bsaldo.json', $newString);
}else {
foreach ($data as $key => $value) {
$mot = $value['cd_driver'];
$array = array();
array_push($array, $mot);
if(in_array($cd_driver, $array)){
$data[$key]['month'] = $cd_month;
$newString = json_encode($data);
file_put_contents('bsaldo.json', $newString);
}else {
array_push($data, $dados2);
$finalString = json_encode($data);
file_put_contents('bsaldo.json', $finalString);
}
}
}
json:
[
{
"cd_driver": "11831",
"Driver": "ADENILSON RODRIGUES DE SOUZA",
"month": "02",
"bsaldo": -903
},
{
"cd_driver": "11835",
"Driver": "EDIVAN DE CASTRO VASSALO",
"month": "01",
"bsaldo": -7670
},
{
"cd_driver": "11831",
"Driver": "ADENILSON RODRIGUES DE SOUZA",
"month": "02",
"bsaldo": -903
},
{
"cd_driver": "11831",
"Driver": "ADENILSON RODRIGUES DE SOUZA",
"month": "02",
"bsaldo": -903
}
]
I had to adapt some things to work with php 5.1.

Answer 1

Your problem is that you are resetting the array on each iteration of the loop. Move it outside of the foreach, like so:
$dados[] = array('cd_driver' => $cd_driver, 'Driver' => $RSx["ds_name"], 'month' => $cd_month, 'bsaldo' => $saldoToJson);
$dados2 = array('cd_driver' => $cd_driver, 'Driver' => $RSx["ds_name"], 'month' => $cd_month, 'bsaldo' => $saldoToJson);
$jsonString = file_get_contents('bsaldo.json');
$data = json_decode($jsonString, true);
if($data == ""){
$newString = json_encode($dados);
file_put_contents('bsaldo.json', $newString);
}else {
$array = array(); # here it won't be continually reset and can accumulate values as intended.
foreach ($data as $key => $value) {
$mot = $value['cd_driver'];
array_push($array, $mot);
if(in_array($cd_driver, $array)){
$data[$key]['month'] = $cd_month;
$newString = json_encode($data);
file_put_contents('bsaldo.json', $newString);
}else {
array_push($data, $dados2);
$finalString = json_encode($data);
file_put_contents('bsaldo.json', $finalString);
}
}
}