How to set condition to remove from array? - php

Question

I'm trying to unset one record from array but I can't manage it, so I'm asking for someone to help me.
Logic I'm trying to achieve is:
User has an item with possible three categories, he posts a form and than I iterate over array and try to see if category3 matches, if not I go to category2, if not I go to category1. If I find one of the categories that matches array and category asked in form I proceed , but If I don't find any of the categories I unset that record in array.Below you will see an example what I've done now.
I can't get the proper result. Either I unset all the records or unset the record that should stay. I'm trying different conditions for last three days without success. Record I'm talking about is with a key 5.
This is my array:
array (size=5)
0 =>
array (size=9)
'cost_no' => string 'D01' (length=3)
'cost_name' => string 'Carina' (length=6)
'cost_type' => string 'Customs' (length=7)
'cost_measure' => string 'Percent' (length=7)
'cost_amount' => string '5.00' (length=4)
'cost_id' => int 7
'group1' => string '' (length=3)
'group2' => string '' (length=3)
'group3' => string '' (length=3)
1 =>
array (size=9)
'cost_no' => string 'D02' (length=3)
'cost_name' => string 'Banka' (length=5)
'cost_type' => string 'Bank' (length=4)
'cost_measure' => string 'Percent' (length=7)
'cost_amount' => string '0.15' (length=4)
'cost_id' => int 8
'group1' => string '' (length=3)
'group2' => string '' (length=3)
'group3' => string '' (length=3)
2 =>
array (size=9)
'cost_no' => string 'D03' (length=3)
'cost_name' => string 'Ĺ pediter' (length=9)
'cost_type' => string 'Transport' (length=9)
'cost_measure' => string 'Percent' (length=7)
'cost_amount' => string '0.50' (length=4)
'cost_id' => int 9
'group1' => string '' (length=3)
'group2' => string '' (length=3)
'group3' => string '' (length=3)
3 =>
array (size=9)
'cost_no' => string 'D04' (length=3)
'cost_name' => string 'Troškovi firme' (length=15)
'cost_type' => string 'Tax' (length=3)
'cost_measure' => string 'Percent' (length=7)
'cost_amount' => string '21.00' (length=5)
'cost_id' => int 10
'group1' => string '' (length=3)
'group2' => string '' (length=3)
'group3' => string '' (length=3)
5 =>
array (size=9)
'cost_no' => string 'C1' (length=2)
'cost_name' => string 'Cost only for this group' (length=24)
'cost_type' => string 'Warehouse' (length=9)
'cost_measure' => string 'Percent' (length=7)
'cost_amount' => string '12.00' (length=5)
'cost_id' => int 12
'group1' => string 'ACC_P' (length=5)
'group2' => string '1401' (length=4)
'group3' => string '' (length=3)
This is foreach and condition I tried to use to unset if non of the categories match ( it has to check from category3 to category 1).
foreach ($cost_array as $key1 => $value1) {
if (isset($form_group3) AND isset($value1['group3']) AND $value1['group3'] != $form_group3) {
if (isset($form_group2) AND isset($value1['group2']) AND $value1['group2'] != $form_group2) {
if (isset($form_group1) AND isset($value1['group1']) AND $value1['group1'] != $form_group1) {
} else {
unset($cost_array[$key1]);
}
} else {
unset($cost_array[$key1]);
}
} else {
unset($cost_array[$key1]);
}
}
Groups user posts from form:
$form_group1 = mysqli_real_escape_string($conn_mysqli, $_POST['group1']);
$form_group2 = mysqli_real_escape_string($conn_mysqli, $_POST['group2']);
$form_group3 = mysqli_real_escape_string($conn_mysqli, $_POST['group3']);