How can I count true and false values in my PHP array?

Question

I'm developing a plugin which does API calls. As a result I'm filling an array with boolean values for success and false.

When my calls are done (multiple calls possible), I want to output a message how many calls were successful and how many failed. This sounds like a simple task, but I have no idea how to do a simple counting.

I've found this question here which fits the most but still misses the false counting part:

PHP Count Number of True Values in a Boolean Array

Do you have any idea how I can get this done a simple way?

This is an example array:

$result = [
    true,
    false,
    false,
    true,
    true,
    true
];

$successful_calls_count = count($result)....
$failed_calls_count = count($result)....

Wouldn't the false count be the total entries in the original array minus the true count. — Nigel Ren, Sep 16 '20 at 17:31

score 2 · Accepted Answer · edited Sep 16 '20 at 19:06

2

You can make the second step pretty easily if you just deduct the successful count from the overall count.

$successful = count(array_filter($array));
$failed = count($array) - $successful;

edited Sep 16 '20 at 19:06

Dharman

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answered Sep 16 '20 at 17:42

Jamie Armour

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Now I feel stupid - I always think too complicated. Thanks for your answer! – Mr. Jo Sep 17 '20 at 07:31

score 1 · Answer 2 · answered Sep 16 '20 at 17:34

1

 $successful = count(array_filter($array));
 $failed = count(array_filter($array, function ($v) {return !$v;} ));

answered Sep 16 '20 at 17:34

Jsowa

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GrumpyCrouton · Answer 3 · 2020-09-16T17:54:48.290

0

You can use array_count_values() and array_map().

$result = [
    true,
    false,
    false,
    true,
    true,
    true
];

//array_map converts BOOL values to ints (0 for false, 1 for true)
//array_count_values counts the amount of each value in an array
$counts = array_count_values(
    array_map('intval', $result)
);

$successful = $counts[1];
$failed = $counts[0];

edited Sep 16 '20 at 17:54

answered Sep 16 '20 at 17:36

GrumpyCrouton

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How can I count true and false values in my PHP array?

3 Answers3