# Error Fixes Summary

## Fixed Issues

### 1. ✅ "Cannot modify header information - headers already sent" Error

**Problem:**
- Error aa raha tha: `Warning: Cannot modify header information - headers already sent by (output started at C:\xampp\htdocs\bug2\includes\footer.php:22) in C:\xampp\htdocs\bug2\includes\functions.php on line 532`

**Root Cause:**
- `footer.php` mein `ob_end_flush()` line 22 pe output buffer flush kar raha tha
- Agar koi output pehle se ho gaya ho to `redirect()` function mein `header()` send nahi kar sakta

**Solution Applied:**

#### a) Fixed `includes/footer.php`
- `ob_end_flush()` ko safely handle kiya
- Ab check karta hai ki output buffer active hai aur headers sent nahi hain

```php
// Only flush output buffer if it's active and not already sent
if (ob_get_level() > 0 && !headers_sent()) {
    ob_end_flush();
}
```

#### b) Fixed `includes/functions.php` - `redirect()` function
- Output buffers ko clear karta hai redirect se pehle
- Agar headers already sent hain to JavaScript redirect use karta hai

```php
function redirect($url, $message = null, $type = 'success') {
    // Clear any output buffers before redirecting
    while (ob_get_level() > 0) {
        ob_end_clean();
    }
    
    if ($message) {
        $_SESSION[$type] = $message;
    }
    
    // Only send header if headers haven't been sent
    if (!headers_sent()) {
        header('Location: ' . $url);
        exit;
    } else {
        // If headers already sent, use JavaScript redirect
        echo '<script>window.location.href = "' . htmlspecialchars($url, ENT_QUOTES, 'UTF-8') . '";</script>';
        exit;
    }
}
```

#### c) Fixed Admin Pages
- `admin/roles_view.php` - `header()` calls ko `redirect()` se replace kiya
- `admin/roles_edit_detail.php` - `header()` calls ko `redirect()` se replace kiya
- `admin/roles_create.php` - `header()` calls ko `redirect()` se replace kiya

### 2. ✅ "Invalid role ID" Error

**Problem:**
- Invalid role ID error aa raha tha jab role ID missing ya invalid ho

**Root Cause:**
- Role ID validation properly handle nahi ho raha tha
- Redirect se pehle output ho raha tha

**Solution:**
- Ab `redirect()` function properly handle karta hai
- Output buffers clear karta hai redirect se pehle
- JavaScript redirect fallback hai agar headers already sent hain

## Files Modified

1. ✅ `includes/footer.php` - Output buffer handling improved
2. ✅ `includes/functions.php` - `redirect()` function enhanced
3. ✅ `admin/roles_view.php` - Header calls replaced with redirect()
4. ✅ `admin/roles_edit_detail.php` - Header calls replaced with redirect()
5. ✅ `admin/roles_create.php` - Header calls replaced with redirect()

## Testing

Ab aap test kar sakte hain:
1. Role management pages open karein
2. Invalid role ID ke saath test karein
3. Redirects properly kaam karenge
4. Header errors nahi aayengi

## Notes

- Sabhi redirects ab safely handle hote hain
- Output buffer issues resolve ho gaye hain
- JavaScript redirect fallback hai agar headers already sent hain
- Existing functionality break nahi hogi

