Organizing an array into a nested array with PHP - php

Question

Does any on know how can I convert this
$events = array(
array("type" => "off-site", "title" => "aaa", "nid" => "11"),
array("type" => "off-site", "title" => "bbb", "nid" => "22"),
array("type" => "installation", "title" => "ccc", "nid" => "33"),
array("type" => "opening", "title" => "ddd", "nid" => "44"),
array("type" => "opening", "title" => "eee", "nid" => "55"),
array("type" => "opening", "title" => "fff", "nid" => "66")
);
into this
$events_processed = array(
"off-site" => array(
array(
"title" => "aaa",
"nid" => "11"
),
array(
"title" => "bbb",
"nid" => "22"
)
),
"installation" => array(
array(
"title" => "ccc",
"nid" => "33"
)
),
"opening" => array(
array(
"title" => "ddd",
"nid" => "44"
),
array(
"title" => "eee",
"nid" => "55"
),
array(
"title" => "fff",
"nid" => "66"
)
)
);
using php?
I've already tried to apply different methods from different posts here but with no success.
I need the array to be nested so I can reorder the array by "type".Hi

Answer 1

You can the code below, please note that your current output is not valid because you missed the array index ...
Example 1
$events_processed = array();
foreach($events as $options)
{
$events_processed[$options['type']][] = array("title"=>$options['title'],"nid"=>$options['nid']);
}
var_dump($events_processed);
OR
Example 2 (#dleiftah suggestion)
$defautKey = "type" ;
foreach($events as $options)
{
$type = $options[$defautKey] ;
unset($options[$defautKey]);
$events_processed[$type][] = $options;
}
var_dump($events_processed);
Both Result Would be Like this but number 2 is more flexible
array
'off-site' =>
array
0 =>
array
'title' => string 'aaa' (length=3)
'nid' => string '11' (length=2)
1 =>
array
'title' => string 'bbb' (length=3)
'nid' => string '22' (length=2)
'installation' =>
array
0 =>
array
'title' => string 'ccc' (length=3)
'nid' => string '33' (length=2)
'opening' =>
array
0 =>
array
'title' => string 'ddd' (length=3)
'nid' => string '44' (length=2)
1 =>
array
'title' => string 'eee' (length=3)
'nid' => string '55' (length=2)
2 =>
array
'title' => string 'fff' (length=3)
'nid' => string '66' (length=2)

Answer 2

Just loop through and reorganize ...
$result = array();
foreach($events as $event){
$key = $event['type'];
unset($event['type']);
$result[$key][] = $event;
}
print_r($result);

Answer 3

Here's what I did:
$array_processed = array();
foreach( $events as $evt){
$array_processed[$evt['type']][] = array('title'=>$evt['title'], 'nid'=>$evt['nid']);
}
print_r($array_processed);

Answer 4

There is no built in function that will do this. You will have to loop through this array and make a new array.
$events=array(contents-of-array);
$proc_events=array(
'off-site' => array(),
'installation' => array(),
'opening' => array()
);
foreach($events as $key => $value)
{
switch($value['type'])
{
case 'off-site':
$proc_events['offsite']=array('title' => $value['title'], 'nid' => $value['nid']);
break;
case 'installation':
$proc_events['installation']=array('title' => $value['title'], 'nid' => $value['nid']);
break;
case 'opening':
$proc_events['opening']=array('title' => $value['title'], 'nid' => $value['nid']);
break;
}
}
The above should work.

Answer 5

The shortest code to do this should be:
foreach ($events as $event)
$events_processed[$event['type']][] = array('title' => $event['title'], 'nid' => $event['nid']);

Answer 6

Here is what I was able to do:
<?php
$events = array(
array("type" => "off-site", "title" => "aaa", "nid" => "11"),
array("type" => "off-site", "title" => "bbb", "nid" => "22"),
array("type" => "installation", "title" => "ccc", "nid" => "33"),
array("type" => "opening", "title" => "ddd", "nid" => "44"),
array("type" => "opening", "title" => "eee", "nid" => "55"),
array("type" => "opening", "title" => "fff", "nid" => "66")
);
foreach ($events as $event) {
$events_processed[$event['type']][] = array('title' => $event['title'],
'nid' => $event['nid']
);
}
echo '<pre>';
print_r($events_processed);
?>
This prints the following:
Array
(
[off-site] => Array
(
[0] => Array
(
[title] => aaa
[nid] => 11
)
[1] => Array
(
[title] => bbb
[nid] => 22
)
)
[installation] => Array
(
[0] => Array
(
[title] => ccc
[nid] => 33
)
)
[opening] => Array
(
[0] => Array
(
[title] => ddd
[nid] => 44
)
[1] => Array
(
[title] => eee
[nid] => 55
)
[2] => Array
(
[title] => fff
[nid] => 66
)
)
)