PHP How to count same words in foreach loop - php

Question

I have this result inside my foreach loop:
Tonsilitis
Tonsilitis
Laryngitis
Rhinosinusitis Akut
Rhinosinusitis Akut
Rhinosinusitis Akut
Common Cold
Common Cold
Common Cold
Rhinitis Alergi
This is my script:
foreach ($results as $data) :
$final = $data->nama_diagnosis . '<br>';
echo $final;
endforeach;
My question is, how can i count the same word in my loop or outside the loop. Can i do that? give me the solution please. As a result i want to count them like this:
Tonsilitis = 2
Laryngitis = 1
Rhinosinusitis Akut = 3
Common Cold = 3
Rhinitis Alergi = 1
Or maybe i can filter the same word so i get only the most words, like Rhinosinusitis Akut and Common Cold. Please help me.
Thanks

Answer 1

You can try something like this, iterating through array with foreach loop and using a ternary operator with isset to safely assign and increment each occurrence:
$count = array();
foreach ($results as $result)
isset($count[$data]) ? $count[$data]++ : $count[$data] = 1;
Example

Answer 2

In foreach loop save words and their count into array, then make another loop and write the amounts.
<?php
$results = array(
array('nama_diagnosis' => 'Tonsilitis'),
array('nama_diagnosis' => 'Tonsilitis'),
array('nama_diagnosis' => 'Laryngitis'),
array('nama_diagnosis' => 'Rhinosinusitis Akut'),
array('nama_diagnosis' => 'Rhinosinusitis Akut'),
array('nama_diagnosis' => 'Rhinosinusitis Akut'),
array('nama_diagnosis' => 'Common Cold'),
array('nama_diagnosis' => 'Common Cold'),
array('nama_diagnosis' => 'Common Cold'),
array('nama_diagnosis' => 'Rhinitis Alergi')
);
$res = array();
foreach ($results as $words) { // changed $word to $words
foreach ($words as $word) { // this foreach added
if (isset($res[$word])) {
$res[$word] += 1;
} else {
$res[$word] = 1;
}
} // end of nested foreach which was added
}
foreach ($res as $word => $count) {
echo $word . ' (' . $count . ')<br>';
}
/*
output:
Tonsilitis (2)
Laryngitis (1)
Rhinosinusitis Akut (3)
Common Cold (3)
Rhinitis Alergi (1)
*/
?>

Answer 3

Try with -
$counts = array();
foreach ($results as $data) :
$final = $data->nama_diagnosis . '<br>';
if (array_key_exists($data->nama_diagnosis, $counts)) {
$counts[$data->nama_diagnosis] += 1;
} else {
$count[$data->nama_diagnosis] = 1;
}
endforeach;
foreach ($counts as $key => $val) {
echo $key.' = '.$val;
}

Answer 4

This should work for you:
<?php
$results = array("Tonsilitis", "Tonsilitis", "Laryngitis", "Rhinosinusitis Akut", "Rhinosinusitis Akut", "Rhinosinusitis Akut", "Common Cold", "Common Cold", "Common Cold", "Rhinitis Alergi");
$counter = array();
foreach ($results as $data):
if(in_array($data->nama_diagnosis, array_flip($counter)))
$counter[$data->nama_diagnosis]++;
else
$counter[$data->nama_diagnosis] = 1;
endforeach;
foreach ($counter as $key => $data)
echo $key . " = " . $data . "<br />";
?>
Output:
Tonsilitis = 2
Laryngitis = 1
Rhinosinusitis Akut = 3
Common Cold = 3
Rhinitis Alergi = 1