Print 2d array data on separate lines with all row values indented except for the first value in each row

Question

This loop

$demo = array(); for($i=0;$i<count($big_array);$i++){ echo 'Page['.$i.'][0]: '.$big_array[$i][0].'<br>'; for($j=1;$j<count($big_array[$i]);$j++){ echo 'Email['.$i.']['.$j.']: '.$big_array[$i][$j].'<br>'; $demo[$big_array[$i][$j]][] = $big_array[$i][$j-1]; //something is not ok with this } }

gives me this:

Page[0][0]: http://www.example.com/impressum Email[0][1]: [email protected] Email[0][2]: [email protected] Page[1][0]: http://www.example.com/termsofuse Email[1][1]: [email protected] Email[1][2]: [email protected] Email[1][3]: [email protected] Email[1][4]: [email protected] Page[2][0]: http://www.example.com/adpolicy Email[2][1]: [email protected] Email[2][2]: [email protected] Email[2][3]: [email protected] Email[2][4]: [email protected]

How can I transform it to get this result:

[email protected] http://www.example.com/impressum [email protected] http://www.example.com/impressum http://www.example.com/termsofuse http://www.example.com/adpolicy [email protected] http://www.example.com/termsofuse [email protected] http://www.example.com/termsofuse [email protected] http://www.example.com/termsofuse http://www.example.com/adpolicy [email protected] http://www.example.com/adpolicy

$big_array = [ [ 'http://www.example.com/impressum', '[email protected]', '[email protected]', ], [ 'http://www.example.com/termsofuse', '[email protected]', '[email protected]', '[email protected]', '[email protected]', ], [ 'http://www.example.com/adpolicy', '[email protected]', '[email protected]', '[email protected]', '[email protected]', ] ];

The input array lists Email addresses per URL - the required output lists URLs per Email. Correct? — MortimerCat
– MortimerCat, Commented Jun 14, 2015 at 6:36

Blue · Accepted Answer · 2015-06-14 06:52:31Z

$array = array ( 0 => array ( 0 => 'http://www.example.com/impressum', 1 => '[email protected]', 2 => '[email protected]', ), 1 => array ( 0 => 'http://www.example.com/termsofuse', 1 => '[email protected]', 2 => '[email protected]', 3 => '[email protected]', 4 => '[email protected]', ), 2 => array ( 0 => 'http://www.example.com/adpolicy', 1 => '[email protected]', 2 => '[email protected]', 3 => '[email protected]', 4 => '[email protected]', ), ); print_r($array); $final = array(); foreach ( $array as $group ) { for ( $i=1; $i<count($group); $i++ ) { $final[$group[$i]][] = $group[0]; } } print_r($final);

Here is the PHP Playground result.

To format it like your example:

foreach ( $final as $email => $links ) { echo $email . "\n"; foreach ( $links as $link ) { echo " " . $link . "\n"; } }

Cool! I managed to get the same result by fixing my line as $demo[$big_array[$i][$j]][] = $big_array[$i][0];. Any ideas on how to print out the result in a way I showed in my question?
Like echo it out with spaces in your question? It looks like you have some random spaces in your answer. Format it exactly like you want it to be shown.
But the last two links in your example only have one space before it. (I'm pretty sure this isn't intended.) I updated my answer with how to format it.

mickmackusa · Accepted Answer · 2024-09-12 08:48:03Z

It seems to me that all that needs to be done is to separate row elements by a newline and two spaces, and then separate rows by a newline.

Code: (Demo)

echo implode( "\n", array_map( fn($v) => implode("\n ", $v), $array ) );

Output

http://www.example.com/impressum [email protected] [email protected] http://www.example.com/termsofuse [email protected] [email protected] [email protected] [email protected] http://www.example.com/adpolicy [email protected] [email protected] [email protected] [email protected]

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