Hoe kan ik tellen hoeveel keer een bepaalde waarde in een array voorkomt gestorteerd op jaar

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Snelle Jaap

Snelle Jaap

06/05/2019 10:55:24
Quote Anchor link
Ik heb een array met een aantal gegevens. De belangrijkste zijn 'answer' en 'datum' (ja ik weet het, engels en nl door elkaar).

Hier een voorbeeld:

Code (php)
PHP script in nieuw venster Selecteer het PHP script
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Array
(
    [0] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 932
            [cid] => 202
            [answer] => ok
        )

    [1] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 930
            [cid] => 202
            [answer] => ok
        )

    [2] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 928
            [cid] => 202
            [answer] => ok
        )

    [3] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 926
            [cid] => 202
            [answer] => ok
        )

    [4] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 924
            [cid] => 202
            [answer] => ok
        )

    [5] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 922
            [cid] => 202
            [answer] => ok
        )

    [6] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 920
            [cid] => 202
            [answer] => ok
        )

    [7] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 918
            [cid] => 202
            [answer] => fout
        )

    [8] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 916
            [cid] => 202
            [answer] => ok
        )

    [9] => Array
        (
            [infoid] => 236
            [company_id] => 57
            [datum] => 2020
            [tid] => 324
            [catid] => 230
            [info_id] => 236
            [questionid] => 1192
            [cid] => 230
            [answer] => ok
        )

    [10] => Array
        (
            [infoid] => 236
            [company_id] => 57
            [datum] => 2020
            [tid] => 324
            [catid] => 230
            [info_id] => 236
            [questionid] => 1191
            [cid] => 230
            [answer] => ok
        )

    [11] => Array
        (
            [infoid] => 236
            [company_id] => 57
            [datum] => 2020
            [tid] => 324
            [catid] => 230
            [info_id] => 236
            [questionid] => 1190
            [cid] => 230
            [answer] => fout
        )

    [12] => Array
        (
            [infoid] => 236
            [company_id] => 57
            [datum] => 2020
            [tid] => 324
            [catid] => 230
            [info_id] => 236
            [questionid] => 1189
            [cid] => 230
            [answer] => ok
        )

    [13] => Array
        (
            [infoid] => 235
            [company_id] => 57
            [datum] => 2019
            [tid] => 329
            [catid] => 229
            [info_id] => 235
            [questionid] => 1187
            [cid] => 229
            [answer] => ok
        )

    [14] => Array
        (
            [infoid] => 235
            [company_id] => 57
            [datum] => 2019
            [tid] => 329
            [catid] => 228
            [info_id] => 235
            [questionid] => 1186
            [cid] => 228
            [answer] => ok
        )

    [15] => Array
        (
            [infoid] => 235
            [company_id] => 57
            [datum] => 2019
            [tid] => 329
            [catid] => 228
            [info_id] => 235
            [questionid] => 1185
            [cid] => 228
            [answer] => ok
        )

    [16] => Array
        (
            [infoid] => 236
            [company_id] => 57
            [datum] => 2020
            [tid] => 324
            [catid] => 230
            [info_id] => 236
            [questionid] => 1188
            [cid] => 230
            [answer] => ok
        )

    [17] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 934
            [cid] => 202
            [answer] => ok
        )

    [18] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 936
            [cid] => 202
            [answer] => ok
        )

    [19] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 938
            [cid] => 202
            [answer] => ok
        )

    [20] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 940
            [cid] => 202
            [answer] => ok
        )

    [21] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 942
            [cid] => 202
            [answer] => ok
        )

    [22] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 944
            [cid] => 202
            [answer] => ok
        )

    [23] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 946
            [cid] => 202
            [answer] => ok
        )

    [24] => Array
        (
            [infoid] => 215
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 202
            [info_id] => 215
            [questionid] => 948
            [cid] => 202
            [answer] => ok
        )

    [25] => Array
        (
            [infoid] => 235
            [company_id] => 57
            [datum] => 2019
            [tid] => 329
            [catid] => 228
            [info_id] => 235
            [questionid] => 1184
            [cid] => 228
            [answer] => ok
        )

    [26] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1154
            [cid] => 220
            [answer] => ok
        )

    [27] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1153
            [cid] => 220
            [answer] => ok
        )

    [28] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1152
            [cid] => 220
            [answer] => ok
        )

    [29] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1151
            [cid] => 220
            [answer] => ok
        )

    [30] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1150
            [cid] => 220
            [answer] => ok
        )

    [31] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1149
            [cid] => 220
            [answer] => ok
        )

    [32] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1147
            [cid] => 220
            [answer] => ok
        )

    [33] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1148
            [cid] => 220
            [answer] => fout
        )

    [34] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1145
            [cid] => 220
            [answer] => ok
        )

    [35] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1146
            [cid] => 220
            [answer] => ok
        )

    [36] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1144
            [cid] => 220
            [answer] => ok
        )

    [37] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1143
            [cid] => 220
            [answer] => ok
        )

    [38] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1142
            [cid] => 220
            [answer] => ok
        )

    [39] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1140
            [cid] => 220
            [answer] => ok
        )

    [40] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1141
            [cid] => 220
            [answer] => ok
        )

    [41] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1139
            [cid] => 220
            [answer] => ok
        )

    [42] => Array
        (
            [infoid] => 230
            [company_id] => 57
            [datum] => 2019
            [tid] => 327
            [catid] => 220
            [info_id] => 230
            [questionid] => 1138
            [cid] => 220
            [answer] => ok
        )

)


Ik wil uiteindelijk in een tabel of overzicht hebben hoeveel answers er fout zijn per jaar. In dit geval zijn er twee jaartallen in de array 2019 en 2020.

Hoe kan ik ophalen hoeveel het answer 'fout' is per jaar? Bijvoorbeeld: 2019 - 5 fout, 2020 - 0 fout


Dit is nu mijn php:

Code (php)
PHP script in nieuw venster Selecteer het PHP script
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<?PHP
//Select wpi according to template chosen
$getwpi = '
SELECT info.id as infoid, info.company_id, info.datum, info.tid, categorie.id as catid, categorie.info_id, question.id as questionid, question.cid, question.answer
FROM wpi_info info
INNER JOIN wpi_categories categorie
ON info.id = categorie.info_id
INNER JOIN wpi_questions question
ON question.cid = categorie.id
WHERE info.company_id = "'
.$conn->real_escape_string($getcompany['id']).'"';
$getwpicon = $conn->query($getwpi);

while($getwpi = $getwpicon->fetch_assoc()){
  $year = date('Y', strtotime($getwpi['datum'])); // only show year
  $getwpi['datum'] = $year; // update your field
  $wpi[] = $getwpi; // add to the result array
}

echo '<pre>';
print_r($wpi);
echo '</pre>';
?>
 
PHP hulp

PHP hulp

18/07/2019 01:27:19
 
Ramon van Dongen

Ramon van Dongen

06/05/2019 11:37:23
Quote Anchor link
Je hebt dus alles in een database staan, gaat het vervolgens in een array zetten en wilt het dan tellen?

Waarom niet direct in de database tellen?
 
Rob Doemaarwat

Rob Doemaarwat

06/05/2019 12:47:40
Quote Anchor link
Of tijdens het ophalen meteen een lijstje bijhouden:
Code (php)
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//ergens bovenaan
$year_count = [];

//in je while loop, nadat je $year bepaald hebt
if($getwpi['answer'] == 'fout') $year_count[$year] = ($year_count[$year] ?? 0) + 1;

//tadaa
print_r($year_count);
 
Ivo P

Ivo P

07/05/2019 17:44:40
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Code (php)
PHP script in nieuw venster Selecteer het PHP script
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SELECT
      info.datum,
      SUM(question.answer = 'fout') as foutteller,
      SUM(question.answer = 'goed') as goedteller

FROM wpi_info info
INNER JOIN wpi_categories categorie ON info.id = categorie.info_id
INNER JOIN wpi_questions question ON question.cid = categorie.id
WHERE info.company_id = '123'
GROUP BY info.datum


Dit geeft je direct het antwoord. Waarschijnlijk een stuk eenvoudiger tellen dat zelf met PHP weer door je array lussen of bij het bouwen van het array bijhouden.

als bonus ook een teller voor de goede antwoorden
 
Thomas van den Heuvel

Thomas van den Heuvel

07/05/2019 20:03:54
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Je zou ook gewoon alles kunnen groeperen op answer? Maar misschien gebruikt @Jaap die data nog voor andere dingen, dan heeft 'ie nog steeds alle resultaten nodig.
 



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