Check if associative array contains value, and retrieve key / position in array

Question

I'm struggling to explain what I want to do here so apologies if I confuse you.. I'm just as confused myself

I have an array like so:

$foo = array(
    array('value' => 5680, 'text' => 'Red'), 
    array('value' => 7899, 'text' => 'Green'), 
    array('value' => 9968, 'text' => 'Blue'), 
    array('value' => 4038, 'text' => 'Yellow'),
)

I want to check if the array contains the value e.g. 7899 and also get the text linked to that value "Green" in the example above.

7899 is not linked to 'yellow'. And exactly what u have to do? — rack_nilesh, Jul 15 '14 at 13:50
@rack_nilesh Apologies for that rack_nilesh.. Addressed that issue. — , Jul 15 '14 at 13:52
@Phantom I thought about that but I'm already nested within 2 other foreach loops and was wondering if there was a better way of doing so. — , Jul 15 '14 at 13:54

score 13 · Accepted Answer · answered Jul 15 '14 at 13:54

Try something like this

$foo = array(
    array('value' => 5680, 'text' => 'Red'), 
    array('value' => 7899, 'text' => 'Green'), 
    array('value' => 9968, 'text' => 'Blue'), 
    array('value' => 4038, 'text' => 'Yellow'),
);

$found = current(array_filter($foo, function($item) {
    return isset($item['value']) && 7899 == $item['value'];
}));

print_r($found);

Which outputs

Array
(
    [value] => 7899
    [text] => Green
)

The key here is array_filter. If the search value 7899 is not static then you could bring it in to the closure with something like function($item) use($searchValue). Note that array_filter is returning an array of elements which is why I pass it through current

Side Note: with dynamic search value `$found = current(array_filter($activityArray, function($item) use($jobID) { return isset($item['jobid']) && $jobID == $item['jobid']; })); print_r($found);` — Wasim Sayyed, Oct 18 '18 at 03:46

AbraCadaver · Answer 2 · 2019-03-25T13:16:18.937

4

For PHP >= 5.5.0 it is easier with array_column:

echo array_column($foo, 'text', 'value')[7899];

Or to be repeatable without using array_column each time:

$bar = array_column($foo, 'text', 'value');
echo isset($bar[7899]) ? $bar[7899] : 'NOT FOUND!';

edited Mar 25 '19 at 13:16

answered Jul 15 '14 at 14:40

AbraCadaver

78,200
7
66
87

score 0 · Answer 3 · edited Sep 19 '17 at 12:55

0

Taking a guess at what you would like here:

function findTextByValueInArray($fooArray, $searchValue){
    foreach ($fooArray as $bar )
    {
        if ($bar['value'] == $searchValue) {
            return $bar['text'];
        }
    }
}

edited Sep 19 '17 at 12:55

Vijaysinh Parmar

897
1
15
19

answered Jul 15 '14 at 14:02

alfcho

61
1
4

Check if associative array contains value, and retrieve key / position in array

3 Answers3

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