convert multiple json to php array - php

Question

I have json file which contains multiple json objects.
Example
{"t":"abc-1","d":"2017-12-29 12:42:53"}
{"t":"abc-2","d":"2017-12-29 12:43:05"}
{"t":"abc-3","d":"2017-12-30 14:42:09"}
{"t":"code-4","d":"2017-12-30 14:42:20"}
Want to read this file and store into database, but I couldn't convert json to php array which further I can store into database.
I tried json_decode function, but its not working. I search for this but in every link its showing use json_decode. Below is my code
$filename = "folder/filename.json";
$data = file_get_contents($filename);
echo $data;
$tags = json_decode($data, true);
echo"<pre>";print_r($tags);exit;
$data is echoed but not the $tags.
Thanks in advance.

Answer 1

Make array of objects and use it later
$j = array_map('json_decode', file('php://stdin'));
print_r($j);
demo

Answer 2

If it's only four lines you can explode and json_decode each line and add it to an array.
$s = '{"t":"abc-1","d":"2017-12-29 12:42:53"}
{"t":"abc-2","d":"2017-12-29 12:43:05"}
{"t":"abc-3","d":"2017-12-30 14:42:09"}
{"t":"code-4","d":"2017-12-30 14:42:20"}';
$arr = explode(PHP_EOL, $s);
Foreach($arr as $line){
$json[] = json_decode($line,true);
}
Var_dump($json);
https://3v4l.org/97m0E

Answer 3

Multiple objects in a row should be enclosed in a json array and separated with comma like elements.So you need a [ ] at the start and end of the file.Also you could close the pre tag
Either you should fix the file generating that 'json' or you can use fgets to get one line at a time, and use json decode on every line

Answer 4

As pointed by other, JSON which you shared isn't valid. And, I think, it is stored in your file in same fashion. I would suggest to read this file line by line each line then you can decode.
$handle = fopen("folder/filename.json", "r");
if ($handle) {
while (($line = fgets($handle)) !== false) {
$tags = json_decode($line, true);
echo"<pre>";print_r($tags);exit;
}
fclose($handle);
} else {
// error opening the file.
}

Answer 5

Assuming a file called `filename.json` contains the following lines
{"t":"abc-1","d":"2017-12-29 12:42:53"}
{"t":"abc-2","d":"2017-12-29 12:43:05"}
{"t":"abc-3","d":"2017-12-30 14:42:09"}
{"t":"code-4","d":"2017-12-30 14:42:20"}
So each one is a separate json entity
$filename = "folder/filename.json";
$lines=file( $filename );
foreach( $lines as $line ){
$obj=json_decode( $line );
$t=$obj->t;
$d=$obj->d;
/* do something with constituent pieces */
echo $d,$t,'<br />';
}

Answer 6

Your JSON is invalid, as it has multiple root elements
Fixing it like the following should work (note the [, ] and commas):
[
{"t":"abc-1","d":"2017-12-29 12:42:53"},
{"t":"abc-2","d":"2017-12-29 12:43:05"},
{"t":"abc-3","d":"2017-12-30 14:42:09"},
{"t":"code-4","d":"2017-12-30 14:42:20"}
]
If you cannot influence how the JSON file is created, you will need to create your own reader, as PHP is not built to support invalid formatting. You could separate the file by new lines and parse each one individually.