CODEWITHSUNDEEP
phparraysloopsmultidimensional-arrayprinting
esafwan
esafwan

Reputation: 18029

Loop a multidimensional array and only print two specific column values per row

How can I print the filepath and filename values from each row?

  Array (
    [0] => Array (
             [fid] => 14
             [list] => 1
             [data] => Array (
                         [alt] =>
                         [title] =>
                       )
             [uid] => 1
             [filename] => trucks_10785.jpg
             [filepath] => sites/default/files/trucks_10785.jpg
             [filemime] => image/jpeg
             [filesize] => 143648
             [status] => 1
             [timestamp] => 1291424171
             [nid] => 8
           )
    [1] => Array (
             [fid] => 19
             [list] => 1
             [data] => Array (
                         [alt] =>
                         [title] =>
                       )
             [uid] => 1
             [filename] => school.jpg
             [filepath] => sites/default/files/school.jpg
             [filemime] => image/jpeg
             [filesize] => 115355
             [status] => 1
             [timestamp] => 1292029563
             [nid] => 8
           )
    [2] => Array (
             [fid] => 20
             [list] => 1
             [data] => Array (
                         [alt] =>
                         [title] =>
                       )
             [uid] => 1
             [filename] => Life_is_wonderful_by_iNeedChemicalX.jpg
             [filepath] => sites/default/files/Life_is_wonderful_by_iNeedChemicalX_0.jpg
             [filemime] => image/jpeg
             [filesize] => 82580
             [status] => 1
             [timestamp] => 1292029572
             [nid] => 8
           )
    [3] => Array (
             [fid] => 21
             [list] => 1
             [data] => Array (
                         [alt] =>
                         [title] =>
                       )
             [uid] => 1
             [filename] => school_rural.jpg
             [filepath] => sites/default/files/school_rural.jpg
             [filemime] => image/jpeg
             [filesize] => 375088
             [status] => 1
             [timestamp] => 1292029582
             [nid] => 8
           )
  )

Upvotes: 161

Views: 459930

Answers (6)

mickmackusa
mickmackusa

Reputation: 47894

In modern PHP, array destructuring can be used to access only specific row columns. To print, string concatenation and interpolation can be avoided by using printf() instead of echo.

foreach ($array as ['filename' => $fn, 'filepath' => $fp]) {
    printf("filename: %s, filepath: %s\n", $fn, $fp);
}

It is a misuse of a native function to call array_map() and NOT use its return value. If functional-style iteration is desired, then iterate with array_walk() because its return value is not designed to represent the iterated data.

array_walk($array, fn($row) => 
    printf("filename: %s, filepath: %s\n", $row['filename'], $row['filepath'])
);

Upvotes: 0

Ish
Ish

Reputation: 29536

Using a foreach loop without a key:

foreach($array as $item) {
    echo $item['filename'];
    echo $item['filepath'];

    // To know what's in $item
    echo '<pre>'; var_dump($item);
}

Using a foreach loop with a key:

foreach($array as $i => $item) {
    echo $array[$i]['filename'];
    echo $array[$i]['filepath'];

    // $array[$i] is same as $item
}

Using a for loop:

for ($i = 0; $i < count($array); $i++) {
    echo $array[$i]['filename'];
    echo $array[$i]['filepath'];
}

var_dump is a really useful function to get a snapshot of an array or object.

Upvotes: 356

Kavinda Harshana
Kavinda Harshana

Reputation: 117

foreach($array as $item => $values) {
    echo $values->filepath;
}

Upvotes: 6

obsergiu
obsergiu

Reputation: 350

For more special cases, you also could use this one:

array_map(function($n) { echo $n['filename']; echo $n['filepath'];}, $array);

Or in a more un-complex way:

function printItem($n){
    echo $n['filename'];
    echo $n['filepath'];
}

array_map('printItem', $array);

This will allow you to manipulate the data in an easier way.

Upvotes: 14

jakoubekcz
jakoubekcz

Reputation: 1

You can use also this without creating additional variables nor copying the data in the memory like foreach() does.

while (false !== (list($item, $values) = each($array)))
{
    ...
}

Upvotes: -4

SilverbackNet
SilverbackNet

Reputation: 2074

Starting simple, with no HTML:

foreach($database as $file) {
    echo $file['filename'] . ' at ' . $file['filepath'];
}

And you can otherwise manipulate the fields in the foreach.

Upvotes: 6

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