This is the relevant part of my code and the variable issue arises with results_string. I will strong/emphasis the exact line but I wanted to give the full scope of it as well.
Edit: Apparently I can't strong/emphasis code so the three *** will have to do to signify where the error happens.
It is really annoying me that I can't figure out this simple issue. I really appreciate any help that is given here.
$database = Database_Factory::create(1);
$database->getConnection($_SESSION['url'],$_SESSION['username'],$_SESSION['password'],$_SESSION['database']);
$results_string;
if(isset($_SESSION['query'])){
$_SESSION['results'] = $database->run_query($_SESSION['query']);
if(!is_string($_SESSION['results'])){
$results = $_SESSION['results'];
$field_count = $results->field_count;
$fields = $results->fetch_fields();
$results_string = '<table border=1><tr style="color:red; background-color: #b0c4de">';
foreach($fields as $field){
$results_string .= '<td>'.$field->name.'</td>';
}
$results_string .= '</tr>';
while($row = $results->fetch_row()){
$results_string .= '<tr style="color:orange; background-color: #e0ffff">';
for($i = 0; $i < $field_count; $i++){
$results_string .= '<td>'.$row[$i]."</td>";
}
$results_string .= '</tr>';
}
$results_string .= '</table>';
}else{
$results_string = "<h2 style='color:red;'>".$_SESSION['results']."</h2>";
}
unset($_SESSION['query']);
}else if(isset($_SESSION["update"])){
if(preg_match('/^insert into shipments/',strtolower($_SESSION['update'])) || preg_match('/^update shipments/',strtolower($_SESSION['update']))){
$supplier_snum;
$updateSuppliers = false;
$first = strpos($_SESSION['update'],"(")+1;
$last = strpos($_SESSION['update'],")");
$temp = substr($_SESSION['update'],$first,$last);
$temp = preg_replace('/\)/', '',$temp);
$temp = preg_replace('/\;/','',$temp);
$temp = preg_replace('/\'/','',$temp);
$temp = preg_replace("/\s+/","",$temp);
$values = explode(",",$temp);
foreach($values as $val){
if($val >= 100){
$updateSuppliers = true;
}else if(preg_match('/^S/',$val)){
$supplier_snum = $val;
}
}
}
$_SESSION['results'] = $database->run_update($_SESSION['update']);
if(is_numeric($_SESSION['results'])){
$results_string .= '<h2 style="color:green">'.$_SESSION['results'].' number of rows have been successfully updated!</h2>';
if($updateSuppliers){
$snums = $database->run_query("select DISTINCT(suppliers.snum) from suppliers join shipments on suppliers.snum = shipments.snum and shipments.quantity >= 100");
$csl_snums .= "'".$supplier_snum."'";
while($row = $snums->fetch_row()){
for($i = 0; $i < $snums->field_count; $i++){
$csl_snums .= ",'".$row[0]."'";
}
}
$blah = $database->run_update("UPDATE suppliers set status = (status+ 5) where snum IN (".$csl_snums.")");
$results_string .='<br /><h2 style="color:green"> Business Logic Dectected! '.$blah.'</h2>';
}
}else{
***$results_string .= '<h2 style="color:red">'.$_SESSION['results'].'</h2>';***
}
unset($_SESSION['update']);
}else if(isset($_POST['logout'])){
session_destroy();
header('Location:index.php');
}
The error is
[Sun Aug 02 04:29:47.726659 2015] [:error] [pid 8108:tid 748] [client ::1:63388] PHP Notice: Undefined variable: results_string in C:\Apache24\htdocs\Prototype\New Working Prototype\QueryResults.php on line 119
The error happens on this line (As I said at the start, I went ahead and put strong/emphasis to make it clear in the code above):
$results_string .= '<h2 style="color:red">'.$_SESSION['results'].'</h2>';