order json array for equal values - php

Question

hello i have json file which contain like this data
{
"data": [
{
"SN": "210477",
"name": "jane",
"stdcode": "446515",
"total": 611
},
{
"SN": "210474",
"name": "JOHN doe",
"stdcode": "446512",
"total": 610
},
{
"SN": "210475",
"name": "smith doe",
"stdcode": "446513",
"total": 610
},
{
"SN": "210476",
"name": "omar",
"stdcode": "446514",
"total": 610
}
]
}
as you can see there is duplicate in total in the last three data in total which is 610
i want to order this data according to "total" so it be printed like this
1.jane
2.JOHN doe
2.smith doe
2.omar
i have this code that order it but this not what i want
<?php
$get_records = #file_get_contents('./result.json',true);
$decode_records = json_decode($get_records);
$data = $decode_records->data;
usort($data, function($a, $b) {
return $a->total > $b->total ? -1 : 1;
});
for($x=0;$x<=count($data);$x++){
echo $x+1 .".".$data[$x]->name;
}
?>
the code output
1.jane
2.JOHN doe
3.smith doe
4.omar

Answer 1

Check whether the total has changed, and don't increment the rank if not.
$rank = 0;
$last_total = null;
foreach ($data as $d) {
if ($d->total !== $last_total) {
$rank++;
$last_total = $d->total;
}
echo "$rank. {$data->name}<br>";
}
Note that this means that the next index after all the duplicates will be ranked #3. If you want it to jump to 5 you need to use the array index as well.
$last_total = null;
foreach ($data as $i => $d) {
if ($d->total !== $last_rank) {
$rank = $i+1;
$last_total = $d->total;
}
echo "$rank. {$data->name}<br>";
}