note 47340 added to function.odbc-fetch-array
| From: | russ at russprince dot com | Date: | Fri, 12 Nov 2004 02:57:02 +0000 |
| Subject: | note 47340 added to function.odbc-fetch-array | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-80423@lists.php.net to get a copy of this message | ||
I really liked Ryan's example so I took it another step and added a recordset class to work
with the connection class. I made slight alterations to the original code as well. Also note the
recordset class takes advantage of php5's __get property function...
<%
class odbcRecordset {
var $recordcount;
var $currentrow;
var $eof;
var $recorddata;
var $query;
function odbcConnection(){
$this->recordcount = 0;
$this->recorddata = 0;
}
function SetData( $newdata, $num_records, $query ) {
$this->recorddata = $newdata;
$this->recordcount = $num_records;
$this->query = $query;
$this->currentrow = 0;
$this->set_eof();
}
function set_eof() {
$this->eof = $this->currentrow >= $this->recordcount;
}
function movenext() { if ($this->currentrow < $this->recordcount) {
$this->currentrow++; $this->set_eof(); } }
function moveprev() { if ($this->currentrow > 0) {
$this->currentrow--; $this->set_eof(); } }
function movefirst() { $this->currentrow = 0; set_eof();
}
function movelast() { $this->currentrow = $this->recordcount - 1; set_eof();
}
function data($field_name) {
if (isset($this->recorddata[$this->currentrow][$field_name])) {
$thisVal = $this->recorddata[$this->currentrow][$field_name];
} else if ($this->eof) {
die("<B>Error!</B> eof of recordset was reached");
} else {
die("<B>Error!</B> Field <B>" . $field_name . "</B>
was not found in the current recordset from query:<br><br>$this->query");
}
return $thisVal;
}
function __get($field_name) {
return $this->data($field_name);
}
}
class odbcConnection {
var $user; //Username for the database
var $pass; //Password
var $conn_handle; //Connection handle
var $temp_fieldnames; //Tempory array used to store the fieldnames, makes parsing returned data
easier.
function odbcConnection(){
$this->user = "";
$this->pass = "";
}
function open($dsn,$user,$pass){
$handle = @odbc_connect($dsn,$user,$pass,SQL_CUR_USE_ODBC) or
die("<B>Error!</B> Couldn't Connect To Database. Error Code:
".odbc_error());
$this->conn_handle = $handle;
return true;
}
function &execute($query){
//Create a temp recordset
$newRS = new odbcRecordset;
$thisData = "";
$res = @odbc_exec($this->conn_handle,$query) or
die("<B>Error!</B> Couldn't Run Query:<br><br>" .
$query . "<br><br>Error Code: ".odbc_error());
unset($this->temp_fieldnames);
$i = 0;
$j = 0;
$num_rows = 0;
// only populate select queries
if (stripos($query, 'select ') !== false) {
while(odbc_fetch_row($res)) {
$num_rows++;
//Build tempory
for ($j = 1; $j <= odbc_num_fields($res); $j++) {
$field_name = odbc_field_name($res, $j);
$this->temp_fieldnames[$j] = $field_name;
$ar[$field_name] = odbc_result($res, $field_name) . "";
}
$thisData[$i] = $ar;
$i++;
}
}
//populate the recordset and return it
$newRS->SetData( $thisData, $num_rows, $query );
return $newRS;
}
}
%>
usage is pretty simple:
<%
$con = new odbcConnection
$con->open("dsn","user","pass")
$sql = "select bar from foo";
$rs = $con->execute($sql);
if (!$rs->eof) {
print $rs->data("bar");
// or //
print $rs->bar;
}
while (!$rs->eof) {
// blah blah code
$rs->movenext();
}
%>
Works pretty well, but I haven't thoughly tested it yet.
Code can be dl'd here:
http://www.russprince.com/odbc_functions.zip
Cheers,
Russ
----
Manual Page -- http://www.php.net/manual/en/function.odbc-fetch-array.php
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