How to combine multiple query's into one? - php

Question

I am running a line graph on RGraph framework, and I am using a SELECT COUNT statement for rejected, accepted, approved etc.....counting how many items was rejected or accepted etc and then dumping the query data into an array, However I am looking for an easier way to implement this query, instead of running a query on each unique row value, also thinking in the way if I have to encounter other column data besides rejected, accepted or etc....I wouldnt, my code doesnt seem very scalable then. Please help
So far, I am running a query for each keyword, hope my code explains this.
The final variable is what i am feeding to RGRAPH, This works fine as it is, however it isn't the right way, and not very scalable, should my row data change.
<?php
$cxn = mysqli_connect("localhost","root","", "csvimport");
$query = "SELECT COUNT(*) FROM table_1 WHERE conclusion = 'rejected'";
$result = mysqli_query($cxn, $query) or die(mysqli_error($cxn));
$display = mysqli_fetch_array($result);
$rejected = $display[0];
//echo $rejected;
$query = "SELECT COUNT(*) FROM table_1 WHERE conclusion =
'accepted'";
$result = mysqli_query($cxn, $query) or die(mysqli_error($cxn));
$display = mysqli_fetch_array($result);
$accepted = $display[0];
//echo $accepted;
$query = "SELECT COUNT(*) FROM table_1 WHERE conclusion = '-'";
$result = mysqli_query($cxn, $query) or die(mysqli_error($cxn));
$display = mysqli_fetch_array($result);
$dash = $display[0];
//echo $dash;
$query = "SELECT COUNT(*) FROM table_1 WHERE conclusion =
'approved'";
$result = mysqli_query($cxn, $query) or die(mysqli_error($cxn));
$display = mysqli_fetch_array($result);
$approved = $display[0];
//echo $approved;
$datarray = [$rejected, $accepted, $dash, $approved];
print_r($datarray);
$data_string = "[" . join(", ", $datarray) . "]";
echo "<br>";
print_r($data_string);
?>

Answer 1

You can just use GROUP BY and add the conclusion column to the result set, so
SELECT conclusion, COUNT(*) as total
FROM table_1
WHERE conclusion in ('rejected', 'accepted', '-', 'approved')
GROUP BY conclusion
Then retrieve each row of the result set
$totals = [];
while($row = mysqli_fetch_array($result)) {
$totals [$row[0]] = [$row[1]];
}
and $totals will be an array something like
array( 'accepted' => 12,
'approved' => 20...)
If you want all of the conclusions, then just remove the WHERE conclusion in line and it will return all of the possibilities along with the count.