Creating Array with specific Key Value

Question

In order to have an array output like

array(2) { ["2012-08-16"]=> array(1) { [0]=> array(2) { ["title"]=> string(24) "RLI Class #42 Graduation" ["event_date"]=> string(10) "2012-08-16" } } ["2012-08-24"]=> array(1) { [0]=> array(2) { ["title"]=> string(10) "Test Event" ["event_date"]=> string(10) "2012-08-24" } } }

I am trying the following

$array = array('title' => $mytitle, 'event_date' => $myyear."-".$mymonth."-".$myday);
$events[$array['event_date']] = $array['title'];

However the output I get is

array(1) { [""]=> NULL } array(1) { ["2012-8-24"]=> string(10) "Test Event" } array(1) { ["2012-8-16"]=> string(25) "RLI Class #42 Graduation" }

How should I change the code to let $events output in the desired array format?

EDIT Just in case a little background of the code will be helpful to find the solution, here it is

while ( $query->have_posts() ) : $query->the_post();
$mytime = get_post_meta($post->ID, 'wpcf-start-date', true); // this has 2 entries: 1>1347408000 and 2>1347408000
$mydate = date("Y-m-D",$mytime);
$mydatearr = getdate($mytime);
$myday = $mydatearr['mday'];  // returns values 16 and 24
$mymonth = $mydatearr['mon']; // returns values 8 and 8
$myyear = $mydatearr['year']; // returns values 2012 and 2012
$mytitle = $post->post_title;
if (($myyear == $year) &&  ($mymonth == $month)) //The $year is declared earlier as 2012 and $month as  8

Next was my code which I replaced with

 $events = array(); ## Declare the new array.
     foreach ($array as $line) {
   $event_date = $line['event_date']; ## Set event_date to a variable
   $events[$event_date] = array( 'title' => $line['title'], 'event_date' => $event_date );  ###add new value to new array with key value            }
 var_dump($events);

And the endwhile

   endwhile;

EDIT OK. I seem to have mistakenly deleted my $array declaration and earlier declared the $events array inside the loop. So I am updating the new code

$events = array(); ## Declare the new array.
while ( $query->have_posts() ) : $query->the_post();
$mytime = get_post_meta($post->ID, 'wpcf-start-date', true);
$mydate = date("Y-m-D",$mytime);
$mydatearr = getdate($mytime);
$myday = $mydatearr['mday'];
$mymonth = $mydatearr['mon'];
$myyear = $mydatearr['year'];
$mytitle = $post->post_title;
if (($myyear == $year) &&  ($mymonth == $month))
$array = array('title' => $mytitle, 'event_date' => $myyear."-".$mymonth."-".$myday);
foreach ($array as $line) {
$event_date = $line['event_date']; ## Set event_date to a variable
$events[$event_date] = array( 'title' => $line['title'], 'event_date' => $event_date );  ###add new value to new array with key value
}
var_dump($events);
endwhile;

The var_dump for $array gives

NULL
Warning: Invalid argument supplied for foreach() in /home/newmedia/public_html/dev/wp-gallerific/wp-content/themes/lajcc-theme/calendar.php on line 165
array(2) { ["title"]=> string(10) "Test Event" ["event_date"]=> string(9) "2012-8-24" } array(2) { ["title"]=> string(25) "RLI Class #42 Graduation " ["event_date"]=> string(9) "2012-8-16" }

And var_dump for $events outputs

Warning: Invalid argument supplied for foreach() in /home/newmedia/public_html/dev/wp-gallerific/wp-content/themes/lajcc-theme/calendar.php on line 165
array(0) { } array(2) { ["T"]=> array(2) { ["title"]=> string(1) "T" ["event_date"]=> string(1) "T" } [2]=> array(2) { ["title"]=> string(1) "2" ["event_date"]=> string(1) "2" } } array(3) { ["T"]=> array(2) { ["title"]=> string(1) "T" ["event_date"]=> string(1) "T" } [2]=> array(2) { ["title"]=> string(1) "2" ["event_date"]=> string(1) "2" } ["R"]=> array(2) { ["title"]=> string(1) "R" ["event_date"]=> string(1) "R" } }

Why would you want the key (event_date) also input as a value within your array? Wouldn't it be easier just to have an associative array with the event_date as key and the title as its value? Or is that not applicable for your application? — Marty McVry
– Marty McVry, Commented Aug 11, 2012 at 23:21
I guess it's not applicable for my application. I need the output exactly as desired. Have been trying a lot of things but just can't nail it. — Ranadeep
– Ranadeep, Commented Aug 11, 2012 at 23:32

David · Accepted Answer · 2012-08-11 23:41:17Z

0

I think you need to foreach() through your array to get the desired output.

Give this a try:

$events = array(); ## Declare the new array.
foreach ($array as $line) {
   $event_date = $line['event_date']; ## Set event_date to a variable
   $events[$event_date] = array( 'title' => $line['title'], 'event_date' => $event_date );  ###add new value to new array with key value
}
var_dump($events);  ##display the reults

Good luck!

edited Aug 11, 2012 at 23:41

answered Aug 11, 2012 at 23:32

David

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3 Comments

Marty McVry Over a year ago

In order to get the desired result, I'd change the 4th line of your code: $events[$event_date] = array( 'title' => $line['title'], 'event_date' => $event_date );

David Over a year ago

I apologize, I missed the data key/value completely! Thanks!

Ranadeep Over a year ago

Nopes. It displays

Warning: Invalid argument supplied for foreach() in /home/newmedia/public_html/dev/wp-gallerific/wp-content/themes/lajcc-theme/calendar.php on line 164 NULL Warning: Invalid argument supplied for foreach() in /home/newmedia/public_html/dev/wp-gallerific/wp-content/themes/lajcc-theme/calendar.php on line 164 array(0) { } Warning: Invalid argument supplied for foreach() in /home/newmedia/public_html/dev/wp-gallerific/wp-content/themes/lajcc-theme/calendar.php on line 164 array(0) { }

Yanick Rochon · Accepted Answer · 2012-08-12 00:11:52Z

0

Why are you executing

$events = array(); ## Declare the new array.

inside your while ? Each iteration basically erase all data set from previous iterations. Just put that line above your while (outside, one live above) and var_dump($events) after your endwhile.

answered Aug 12, 2012 at 0:11

Yanick Rochon

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3 Comments

Ranadeep Over a year ago

Tried it outside the loop and still returns

array(0) { } Warning: Invalid argument supplied for foreach() in /home/newmedia/public_html/dev/wp-gallerific/wp-content/themes/lajcc-theme/calendar.php on line 164 array(0) { } Warning: Invalid argument supplied for foreach() in /home/newmedia/public_html/dev/wp-gallerific/wp-content/themes/lajcc-theme/calendar.php on line 164 array(0) { }

Yanick Rochon Over a year ago

Then you are not showing all the relevant code, because there is no way, with what you provided, that you'd get this warning.

Ranadeep Over a year ago

You are right. I had mistakenly omitted the $array line from the last code. However, it still gives some errors. I have updated the code with the outputs.

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