Split an array into mutiple arrays based on a value - PHP - php

Question

What I've tried so far : I have an array as shown below, what i wanted to do is, create multiple arrays based on the value BEGIN_DAY:
Array
(
[0] => Array
(
[0] => BEGIN_DAY
[1] => 15
)
[1] => Array
(
[0] => 20130701
[1] => 4
[2] => 4
[3] => 3060
[4] => 1
)
[2] => Array
(
[0] => 20130702
[1] => 270
[2] => 757
[3] => 13812810
[4] => 4
)
[3] => Array
(
[0] => 20130703
[1] => 5
[2] => 123
[3] => 3894971
[4] => 2
)
[4] => Array
(
[0] => 20130704
[1] => 290
[2] => 478
[3] => 5119617
[4] => 1
)
[5] => Array
(
[0] => END_DAY
[1] => 15
)
[6] => Array
(
[0] => BEGIN_DAY
[1] => 16
)
[7] => Array
(
[0] => 20130704
[1] => 290
[2] => 478
[3] => 5119617
[4] => 1
)
and so on ...
I want to split this array into multiple different arrays when ever it begin with BEGIN_DAY so it should look like this:
The first :
Array
(
[0] => Array
(
[0] => BEGIN_DAY
[1] => 15
)
[1] => Array
(
[0] => 20130701
[1] => 4
[2] => 4
[3] => 3060
[4] => 1
)
[2] => Array
(
[0] => 20130702
[1] => 270
[2] => 757
[3] => 13812810
[4] => 4
)
[3] => Array
(
[0] => 20130703
[1] => 5
[2] => 123
[3] => 3894971
[4] => 2
)
[4] => Array
(
[0] => 20130704
[1] => 290
[2] => 478
[3] => 5119617
[4] => 1
)
[5] => Array
(
[0] => END_DAY
[1] => 15
)
The second :
[0] => Array
(
[0] => BEGIN_DAY
[1] => 16
)
[1] => Array
(
[0] => 20130704
[1] => 290
[2] => 478
[3] => 5119617
[4] => 1
)
What I've tried so far :
$days=array();
$split_by='BEGIN_DAY';
foreach ($day_all as $key => $value) {
if($day_all[$key][0]==$split_by){
$days=array_slice($day_all, 0,$split_by);
}
}
var_dump($days);
Much Appreciated!

Answer 1

$sk = "first";
foreach ($array as $key=>$value)
{
if(in_array(BEGIN_DAY, $value)&&$key!=0)
{
$sk = "second";
}
$result[$sk][] = $value;
}
echo "<pre>";
print_r($result);
$first = $result['first'];
$second = $result['second'];

Answer 2

Something like this :
$yourArray = ...; //is your array as described above
$finalArray = [];
$tempArray = [];
for($idx = 0; idx<$yourArray .length; idx++){
$tempArray = $yourArray[$idx]
if($yourArray[$idx][0] == 'BEGIN_DAY'){
$finalArray[] = $tempArray;
$tempArray = [];
}
}
The final array will contain the arrays. Each time the BEGIN_DAY is found, the array will be inserted into the finalArray and a new one is created.
To improve the code, check the existence of the cell too, to avoid index exception.