PHP store multi-dimensional array's key in foreach - php

Question

It's an interesting situation for getting the array key in multi-dimensional array.
I know how to get the array value by using foreach but how to get the key value and insert into database??
Here is my code:
//Array
$BookingInfo = array(
"115"=>array(
"date"=>array(
"15/12/2014"=>array(//need to get the date but not in here
array(
//need to get the date in here!!
"from"=>2,
"to"=>5,
"user"=>"Ella",
"userid"=>"b2111"
),
array(
"from"=>5,
"to"=>7,
"user"=>"Johnson",
"userid"=>"a2413"
)
),
"16/12/2014"=>array(
array(
"from"=>4,
"to"=>8,
"user"=>"Peter",
"userid"=>"g531"
)
),
"17/12/2014"=>array(
array(
"from"=>1,
"to"=>3,
"user"=>"Chris",
"userid"=>"h024"
),
array(
"from"=>3,
"to"=>6,
"user"=>"Jennifer",
"userid"=>"f314"
)
),
"20/12/2014"=>array(
array(
"from"=>1,
"to"=>5,
"user"=>"Raymond",
"username"=>"r362"
)
),
"21/12/2014"=>array(
array(
"from"=>1,
"to"=>6,
"user"=>"Amy",
"username"=>"a754"
)
),
"23/08/2014"=>array(
array(
"from"=>2,
"to"=>4,
"user"=>"Amy",
"userid"=>"m432"
)
)
)
)
);
The foreach code:
foreach($BookingInfo as $roomNumber => $value){
foreach($value as $id => $val){
foreach($val as $bookDate => $array){
foreach($array as $key => $detail){
foreach($detail as $period =>$info){
//get the $bookDate here
//if I get the "$bookDate" here, it shows the result with repeating 3 times, how can I solve it??
}
}
}
}
}
And I want to get the "15/12/2014" 2 times because of two members' booking, and the "16/12/2014" 1 times, what is the method to do it? Thanks for help.

Answer 1

It's probably easiest to just add the bookDate to the detail array, in the second innermost loop:
foreach($BookingInfo as $roomNumber => $value){
foreach($value as $id => $val){
foreach($val as $bookDate => $array){
foreach($array as $key => $detail){
$detail['bookDate'] = $bookDate;
foreach($detail as $detailkey =>$detailval){
print "$detailkey => $detailval\n";
}
print "***\n";
}
}
}
}
(Just make sure that whatever key you use isn't one that might be in the details array already or you might cause some confusion).
See http://codepad.org/oQT3cmo8 for output