Jinsi ya Kurekebisha Date to Expire Errors Kwenye PHP Subscription Systems

Jifunze jinsi ya kutatua Date to Expire errors kwenye PHP subscription systems, kuhakikisha automatic expiry inafanya kazi kwa usahihi na data ya database ni sahihi.

Utangulizi

Mara nyingi developers wanakutana na tatizo la subscription expiry date haifanyi kazi:

❌ Users wanabaki active baada ya expiration

Hili ni tatizo la kawaida kwenye systems zinazotumia PHP na MySQL. Katika post hii, tutajifunza sababu, common mistakes, na fixes.

Sababu Kuu za Date to Expire Errors
1️⃣ Date Format Si Sahihi

MySQL inahitaji YYYY-MM-DD.

PHP date lazima iendane na MySQL format.

$date_to_expire = '16-12-2025'; // wrong
$date_to_expire = '2025-12-16'; // correct
2️⃣ Null Values Hazitakaguliwi

Kutumia NULL kwa tarehe bila logic inaweza kusababisha system kushindwa ku-expire account.

if($row['date_to_expire'] == NULL){
$date_to_expire = '2025-12-16';
}
3️⃣ Query Haitekelezwi Sahihi

Hakikisha UPDATE query na WHERE clause zipo sahihi

$sql = "UPDATE users SET date_to_expire='$date_to_expire' WHERE id=$id";
Fix Sahihi (MySQLi)
$id = $_POST['id'] ?? 0;
$date_to_expire = date('Y-m-d', strtotime('+30 days'));


if($id > 0){
$sql = "UPDATE users SET date_to_expire='$date_to_expire' WHERE id=$id";
if(mysqli_query($conn, $sql)){
echo "Date to expire ime-update kikamilifu";
}else{
echo "Error: " . mysqli_error($conn);
}
}
Fix Sahihi (PDO)
$stmt = $pdo->prepare("UPDATE users SET date_to_expire=? WHERE id=?");
$stmt->execute([$date_to_expire, $id]);
echo "Date to expire ime-update kikamilifu";

✔ Safe
✔ Prevents SQL Injection

Debug Tips

✔ Angalia date format kabla ya UPDATE

✔ Tumia isset() au ?? ku-check null

✔ Hakikisha WHERE clause ipo

✔ Test kwa staging DB kwanza

Makosa ya Kuepuka ❌

❌ Kutumia wrong format

❌ Kutokagua null values

❌ Kufanya UPDATE bila WHERE