Three dimension array - php

Question

I'm trying to build a 3 dimension array with the following code :
while ($Inf = $queryPrep->fetch(PDO::FETCH_OBJ)) {
$cie_Names = array(
$Inf->dp_id=>array(
'name'=> $Inf->dp_desc,
'enabled'=>$Inf->dp_enabled));
}
Unfortunatly, this code was only returning the last record, so I chaged for :
$cie_Names = array();
while ($Inf = $queryPrep->fetch(PDO::FETCH_OBJ)) {
$cie_Names = [$Inf->dp_id]=>array(
'name'=> $Inf->dp_desc,
'enabled'=>$Inf->dp_enabled);
}
But now I'm getting a error.
I'll need to call my array later this way :
foreach ($depts as $ID => $DeptDetail) {
$optlist .= '<option value=' . $ID . '>' . $DeptDetail['name'] . $DeptDetail['enabled'] . '</option>';
}

Answer 1

You add a new element to an array by assigning to arrayName[]:
while ($Inf = $queryPrep->fetch(PDO::FETCH_OBJ)) {
$cie_Names[] = array(
$Inf->dp_id=>array(
'name'=> $Inf->dp_desc,
'enabled'=>$Inf->dp_enabled
)
);
}
However, this seems like a poor array layout -- each element of the cie_Names array will be an associative array with a different key; accessing them will be difficult because you won't know how the keys map to array indexes, you'll have to do a loop to find anything. What would probably be more useful is:
while ($Inf = $queryPrep->fetch(PDO::FETCH_OBJ)) {
$cie_Names[$Inf->dp_id] = array(
'name'=> $Inf->dp_desc,
'enabled'=>$Inf->dp_enabled
);
}
The keys of the cie_Names array will then by the dp_id values.