foreach loop to extract and group sub-arrays - php

Question

Array:
Array
(
[0] => Array
(
[date] => 2018-05-23
[content] => Array
(
[0] => Array
(
[0] => AAAAAA
[1] => BBBBBB
[2] => CCCCCC
[3] => DDDDDD
[4] => EEEEEE
[5] => FFFFFF
[6] => GGGGGG
[7] => HHHHHH
[8] => IIIIII
[9] => JJJJJJ
)
)
)
[1] => Array
(
[date] => 2018-05-22
[content] => Array
(
[0] => Array
(
[0] => KKKKKK
[1] => LLLLLL
[2] => MMMMMM
[3] => NNNNNN
...
I need to be able to create a foreach loop that will create a database record from 3 variables.
foreach #1:
$date = $array['content']['date']; //2018-05-23
$headline = $array['content'][0][$key]; // AAAAAA
$content = $array['content'][0][$key]; // BBBBBB
foreach #2:
$date = $array['content']['date']; //2018-05-23
$headline = $array['content'][0][$key]; // CCCCCC
$content = $array['content'][0][$key]; // DDDDDD
Until it finishes with the first sub-array and then goes to the second array:
foreach #6:
$date = $array['content']['date']; //2018-05-22
$headline = $array['content'][0][$key]; // KKKKKK
$content = $array['content'][0][$key]; // LLLLLL
I've been trying to group the arrays with array_chunk with no success and then I tried to write a small fix to order the array properly with this:
if ($x <= 10) {
if ( $a < 2 ) {
$a++;
} else {
$x++;
$a = 1;
}
$res[$i]['content'][$x][] = ltrim($text);
} else {
$res[$i]['content'][$x][] = ltrim($text);
$x = 0;
}
Result:
[date] => 2018-05-23
[content] => Array
(
[0] => Array
(
[0] => AAAAAA
[1] => BBBBBB
)
[1] => Array
(
[0] => CCCCCC
[1] => DDDDDD
)
[2] => Array
(
[0] => EEEEEE
[1] => FFFFFF
)
[3] => Array
(
[0] => GGGGGG
[1] => HHHHHH
)
Which worked for the first array but all the other arrays lost order and were not categorized properly.
Any ideas how this can be created?
EDIT: content will always have 24 records (0-23), so if divided into chunks we should get 12 array chunks for every content sub-array.

Answer 1

I'm not sure how your DB structure looks like because you didn't mention, but you can do something like that:
<?php
$array = [
[
"date" => "date",
"content" => [["A", "B", "C"]]
],
[
"date" => "date",
"content" => [["E", "F", "G", "H"]]
],
];
$sql = "INSERT INTO table (content, date) VALUES ";
foreach ($array as $key => $item) {
$content = $item["content"][0];
for ($i = 0; $i < count($content); $i += 2) {
$letters = $content[$i];
if (isset($content[$i + 1])) {
$letters .= $content[$i + 1];
}
$sql .= "('$letters', '$item[date]'),";
}
}
$sql = rtrim($sql, ",") . ";";
echo $sql;
Will output:
INSERT INTO table (content, date) VALUES ('AB', 'date'),('C', 'date'),('EF', 'date'),('GH', 'date');

Answer 2

<?php
$collection =
array
(
array
(
'date' => '2018-05-23',
'content' => array
(
array
(
'AAAAAA',
'BBBBBB',
'CCCCCC',
'DDDDDD',
'EEEEEE',
'FFFFFF',
'GGGGGG',
'HHHHHH',
'IIIIII',
'JJJJJJ'
)
)
),
array
(
'date' => '2018-05-22',
'content' => array
(
array
(
'KKKKKK',
'LLLLLL',
'MMMMMM',
'NNNNNN'
)
)
)
);
function getChunks($data){
$result = array();
$length = count($data);
for($i=0;$i<$length;$i += 2){
$result[] = array($data[$i],$data[$i+1]);
}
return $result;
}
function groupContentByDate($collection){
$result = array();
foreach($collection as $each_data){
$result[$each_data['date']] = array('content' => array());
foreach($each_data['content'] as $each_content){
$result[$each_data['date']]['content'] = array_merge($result[$each_data['date']]['content'],getChunks($each_content));
}
}
return $result;
}
echo "<pre>";
print_r(groupContentByDate($collection));
OUTPUT
Array
(
[2018-05-23] => Array
(
[content] => Array
(
[0] => Array
(
[0] => AAAAAA
[1] => BBBBBB
)
[1] => Array
(
[0] => CCCCCC
[1] => DDDDDD
)
[2] => Array
(
[0] => EEEEEE
[1] => FFFFFF
)
[3] => Array
(
[0] => GGGGGG
[1] => HHHHHH
)
[4] => Array
(
[0] => IIIIII
[1] => JJJJJJ
)
)
)
[2018-05-22] => Array
(
[content] => Array
(
[0] => Array
(
[0] => KKKKKK
[1] => LLLLLL
)
[1] => Array
(
[0] => MMMMMM
[1] => NNNNNN
)
)
)
)