How Can I Select Data by Name From Array in PHP?

Question

I have an array like this:

Array(
    [0]=>Array([uploaderName]=>x[uploadedImageName]=>k6gIjfO[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
    [1]=>Array([uploaderName]=>x[uploadedImageName]=>byUTyJo[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
    [2]=>Array([uploaderName]=>x[uploadedImageName]=>oSVEnNk[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
    [3]=>Array([uploaderName]=>x[uploadedImageName]=>Dj7GRYS[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
    [4]=>Array([uploaderName]=>x[uploadedImageName]=>upsb8IC[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
    [5]=>Array([uploaderName]=>x[uploadedImageName]=>YoEEzGi[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
    [6]=>Array([uploaderName]=>x[uploadedImageName]=>st3dLNs[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
    [7]=>Array([uploaderName]=>x[uploadedImageName]=>LBNpiIG[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
    [8]=>Array([uploaderName]=>x[uploadedImageName]=>mFYDmBG[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
    [9]=>Array([uploaderName]=>x[uploadedImageName]=>z03kSx1[uploaderIp]=>195.155.116.217[uploader]=>e0699587cbfd[uploadedServer]=>alpha)
)

I want to get any image's data from this array.

Example: When user shows uploadedImageName == jCPjeWv, I wan't to get who is it's uploader.

Related: [PHP multidimensional array search by value](https://stackoverflow.com/q/6661530/2943403) — mickmackusa, Nov 08 '22 at 06:52

CarlosCarucce · Accepted Answer · 2016-06-13T19:09:36.267

1

Simple, just use foreach

$arr = array(/* content here */);

foreach($arr as $value){
    if($value['uploadedImageName'] == 'jCPjeWv'){
        echo $value['uploaderName'];
        break;
    }
}

edited Jun 13 '16 at 19:09

answered Jun 13 '16 at 19:00

CarlosCarucce

3,420
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AbraCadaver · Answer 2 · 2016-06-13T19:09:41.250

1

Just for fun, here's another way:

echo array_column($array, 'uploaderName', 'uploadedImageName')['jCPjeWv'];

Get an array of uploaderName with the index set to uploadedImageName
Access the index using the uploadedImageName 'jCPjeWv'

Obviously to do it multiple times you would want to actually create a new array:

$images = array_column($array, 'uploaderName', 'uploadedImageName');
echo $images['jCPjeWv'];

If you want to access the other values as well, then use null instead of uploaderName:

$images = array_column($array, null, 'uploadedImageName');
echo $images['jCPjeWv']['uploaderName'];
echo $images['jCPjeWv']['uploaderIp'];

NOTE: These ways only work if the uploadedImageName is unique.

edited Jun 13 '16 at 19:09

answered Jun 13 '16 at 19:04

AbraCadaver

78,200
7
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Good trick. Doesn't it take too much resources from the server (Memory/Processing)? – CarlosCarucce Jun 13 '16 at 19:08
@CarlosCarucce: Doubt it, but added a reusable example. – AbraCadaver Jun 13 '16 at 19:10
To clarify for researchers, using a `break` -able `foreach()` will likely perform better than functional-style approaches (`array_column()` and `array_filter()`) because `foreach()` has the potential to stop iterating as soon as it finds a match. Conversely, functional iterators cannot stop when a match is found -- they will unconditionally iterarate the entire array. – mickmackusa Nov 17 '22 at 03:39

score 0 · Answer 3 · answered Jun 13 '16 at 19:04

0

A foreach is possible, but I think it's important to learn the array functions as well so I'm just going to put this example here.

$uploadedImageName = 'jCPjeWv';
$filtered = array_filter($array, function($value) use ($uploadedImageName) {
   return ($value['uploadedImageName'] == $uploadedImageName);
});

This will return a $filtered with the other arrays removed since their $value['uploadedImageName'] will not equal $uploadedImageName.

For more info check out the http://php.net/manual/en/function.array-filter.php manual.

answered Jun 13 '16 at 19:04

Devon Bessemer

34,461
9
69
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1

To clarify for researchers, using a `break` -able `foreach()` will likely perform better than functional-style approaches (`array_column()` and `array_filter()`) because `foreach()` has the potential to stop iterating as soon as it finds a match. Conversely, functional iterators cannot stop when a match is found -- they will unconditionally iterarate the entire array. – mickmackusa Nov 17 '22 at 03:39
Yes that is true, most languages have a concept of a "first" or "single" match filter, but it's been a while since I've used PHP, I can't recall if that type of function exists natively. – Devon Bessemer Nov 17 '22 at 14:25

How Can I Select Data by Name From Array in PHP?

3 Answers3

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