I am wondering how $link can be undefined. It is a global inside class cdb.php and is set when the mysql connect is called. If it were undefined, when mysql connect was called, it would die because I have coded it this way.
<html>
<head>
</head>
<body>
<?php
function justGetCSNumbers($input)
{
$input = preg_replace('/[\D]/',"",$input);
$sp = preg_split("/,/",$input);
$numbs = preg_grep('/^(\d+)(,\d+)*$/',$sp);
$csv = implode(",",$numbs);
#echo $csv;
return $csv;
}
function queryDB($cleaned)
{
$split = preg_split('/,/',$cleaned);
$resAy = array();
for($i=0;$i<count($split);$i++)
{
if((strlen($split[$i])>5)&&(strlen($split[$i])<10))
{
$resAy[$i] = "uid='$split[$i]'";
}
}
if(count($resAy)>0)
{
$q = 'SELECT * FROM userbase WHERE '.$resAy[0];#.$whereclause;
echo '<br/> query: '.$q.'<br/>';
connectDB();
return mysql_query($q,$link) or die("Couldn't complete query ".mysql_error($link));
}
}
function find(){
$p = $_POST['userToQuery'];
if(isset($p))
{
$csv = justGetCSNumbers($p);
$found= queryDB($csv);
}
}
include('cdb.php');
find();
?>
Sorry for the poorly formatted code, using vi.
My apache2 error log shows that the variable $link is undefined when i use it here, even after calling connectDB(); which is the code that does a mysql_connect and therefore sets up the link.
‘mysql_error() expects parameter 1 to be resource, null given’
I refactored my code so the link would be defined (this version), but somehow I am having trouble.
[EDIT]
Here is the cdb.php class:
<?php
function connectDB()
{
global $link;
$uname = 'site123';
$pass = 'abc123';
$loc = "localhost";
$link = mysql_connect($loc, $uname, $pass) or die("Couldn't connect to the DB");
$dbname = 'jagrail';
$db = mysql_select_db($dbname,$link);
if(!$db)
{die("Failed to select db");}
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
}
#return $link;
}
?>
EDIT:
Add:
to the top of the queryDB() function, so that it knows $link is a global variable, rather than just a local.