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Bug #10121 Case Sensitive Associative Arrays
Submitted: 2001-04-02 16:11 UTC Modified: 2001-05-22 07:05 UTC
From: dranor at dracon dot net Assigned:
Status: Closed Package: PostgreSQL related
PHP Version: 4.0.4pl1 OS: Redhat Linux 7.0
Private report: No CVE-ID: None
View Developer Edit
 [2001-04-02 16:11 UTC] dranor at dracon dot net 
The scenario is described here:

mydb=> CREATE TABLE test ( U_Name char(50), U_Pass char(16) );
mydb=> INSERT INTO test values ('Bob', 'password');

query.php:

<?
$conn = pg_connect("dbname=mydb");
$result = pg_exec($conn, "select U_Name, U_Pass from test")
$arr = pg_fetch_array($result, 0);
echo "U_Name: " + $arr[U_Name] + " U_Pass: " + $arr[U_Pass] + "<BR>";
echo "u_name: " + $arr[u_name] + " u_pass: " + $arr[u_pass] + "<BR>";
?>

results that are printed:U_Name:  U_Pass: 
                         u_name: Bob u_pass: password

( arr[0] = Bob, arr[1] = password)


U_Name is not being automatically lowercased when using associative arrays.  As of v6.1 PostgreSQL lowercases all table names as well as all columns.  So searching on mixed case or uppercase names will not work unless they are enclosed in quotes..

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 [2001-04-02 17:27 UTC] dranor at dracon dot net 
Rereading that last line its a little confusing.
If you want to input table or column names as mixed case you need to enclose them in quotes otherwise they are lowered.  Then when you make a query you would also need to enclose the query names in quotes as it is also lowered automatically if there are no quotes.  However this behavior is not shared by associative arrays in PHP for some reason.
 [2001-04-02 17:49 UTC] dranor at dracon dot net 
Rereading that last line its a little confusing.
If you want to input table or column names as mixed case you need to enclose them in quotes otherwise they are lowered.  Then when you make a query you would also need to enclose the query names in quotes as it is also lowered automatically if there are no quotes.  However this behavior is not shared by associative arrays in PHP for some reason.
 [2001-05-22 07:05 UTC] swm@php.net 
This query performs exactly as it should. If you had have enclosed the create table columns in quotes, they would have been treated case sensitively (in the create and subsequently in the query) as well as by the associative array. Your query proves this.
 
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