$id_list это список чисел 10306, 10304, 10305
Я делаю это так:
$json5 = json_decode($json4);
$id_list = implode(",", array_map(function ($val) { return (int) $val->contact_id; }, $json5));
И когда я повторяю это с echo "The numbers are " . $id_list; в моем php Iget:
The numbers are 10306The numbers are 10306, 10304The numbers are 10306, 10304, 10305
Я пытаюсь удалить строки из таблицы, review_shared, где число / с в $id_list do / не существует в столбце contact_id review_sharedтаблица.
review_shared:
user_id contact_id
10303 10306
10303 10304
10303 10305
10303 10307
В этом случае последняя строка с 10307 будет удалена из таблицы, так как 10307 отсутствует в $id_list.
Но поскольку он стоит только строка с 10306, остается в таблице review_shared.Все остальное удаляется из таблицы review_shared, но должна быть удалена только строка с 10307.10306, 10304 and 10305 должен оставаться на месте.Вы можете помочь?
Когда я жестко кодирую $id_list как:
$id_list = "10306, 10304, 10305";
, тогда мой код работает, как задумано, строка с 10307 удаляется из таблицы review_shared, а остальные остаются,И когда я повторяю с echo "The numbers are " . $id_list;, я получаю: The numbers are 10306, 10304, 10305The numbers are 10306, 10304, 10305The numbers are 10306, 10304, 10305
Но $id_list будет меняться, поэтому я не могу жестко закодировать его таким образом.
Вот мойполный код:
//this is the username, the logged-in user, in the user table
$user_id = 10303;
//post all phone numbers on my phone, taken from Android, as a JSON array
$json = $_POST['phonenumberofcontact'];
//$json = '[{"phone_number":"+353872934480"}, {"phone_number":"+353872934482"}]';
//decode the JSON into PHP language, will look something like ["username"] => "0871234567" etc
$array = json_decode($json);
//We want to get the corresponding user_id of the posted phone number
$query = "SELECT * FROM user WHERE username = ?";
//sanitize the query
$stmt2 = $con->prepare($query) or die(mysqli_error($con));
//post the phone numbers of contacts from Android
$stmt2->bind_param('s', $phonenumberofcontact) or die ("MySQLi-stmt binding failed ".$stmt2->error);
//make the result of the query, $results, into an array
$results = array();
//$results = '[{"usernameMatch":"+353872934480"}, {"usernameMatch":"+353872934482"}]';
//$results = json_decode($results);
//for each phone number of contact posted from Android, and decoded, call it $username
foreach ($array as $value)
{
$phonenumberofcontact = $value->phone_number;
//get the usernames (phone numbers) that match phone numbers in our posted JSON, jsonArrayAllPhonesandNamesofContacts
$stmt2->execute() or die ("MySQLi-stmt execute failed ".$stmt2->error);
$result2 = $stmt2->get_result();
//So, above, we will have our $results array - where there
//is a match between the posted JSON and usernames in the user table.
//**********************
//we want to get the corresponding user_ids in user table of usernames
while ($row = $result2->fetch_assoc()) { //while 1.
//call this user_id contact_id
$contact_id = $row['user_id'];
//here we get the contact_id in the user table of matching contacts
//will be of the form [{"contact_id":"1"},{"contact_id":"27"}, etc...]
//below we will delete these from the contacts table, if they don't exist in the most updated
//matching contacts.
$contact_id_results[] = array('contact_id' => $contact_id);
//$results of the matching usernames will be of the form [{"usernameMatch":"+123456"}, etc...]
$results[] = array('usernameMatch' => $row['username']);
//}
//Check if the contact_id which we got from the user table, for logged-in user, is in the contacts table.
//We use this for updating contacts who
//who may have been added or deleted into logged-in user's contacts phone book since the last time using the app
$query3 = "SELECT * FROM contacts WHERE user_id = ? AND contact_id = ?";
if ($stmt3 = $con->prepare($query3) or die(mysqli_error($con))) {
$stmt3->bind_param('ii', $user_id, $contact_id) or die ("MySQLi-stmt binding failed ".$stmt3->error);
$stmt3->execute() or die ("MySQLi-stmt execute failed ".$stmt3->error);
$result3 = $stmt3->get_result();
$stmt3->close();
}
//insert matching contact_ids into the contacts table, if not there already
If ($result3->num_rows == 0) {
$stmt4 = $con->prepare("INSERT INTO contacts (user_id, contact_id) VALUES(?,?)") or die(mysqli_error($con));
$stmt4->bind_param('ii', $user_id, $contact_id) or die ("MySQLi-stmt binding failed ".$stmt4->error);
$stmt4->execute() or die ("MySQLi-stmt execute failed ".$stmt4->error);
$stmt4->close();
}
//encode the contacts in the contacts table of this user
$json4 = json_encode($contact_id_results);
//$json4 = '[{"contact_id": 10306}, {"contact_id": 10304}, {"contact_id": 10305}]';
//decode $json4, because our implode wasn't working otherwise
$json5 = json_decode($json4);
//get the contact_id values as individual strings and call these $id_list
$id_list = implode(",", array_map(function ($val) { return (int) $val->contact_id; }, $json5));
//echo "The numbers are " . $id_list;
//$id_list = "10306, 10304, 10305";
//delete any extra unnecessary contacts in the contacts table of logged-in user
$query5 = "DELETE FROM contacts WHERE user_id = ? AND contact_id NOT IN ($id_list)";
$stmt5 = $con->prepare($query5) or die(mysqli_error($con));
$stmt5->bind_param('i', $user_id) or die ("MySQLi-stmt binding failed ".$stmt5->error);
$stmt5->execute() or die ("MySQLi-stmt execute failed ".$stmt5->error);
$stmt5->close();
//delete any extra unnecessary contacts from review_shared table of logged-in user, except logged-in user's own contact_id
$query6 = "DELETE FROM review_shared WHERE user_id = ? AND contact_id NOT IN ($id_list) AND contact_id <> ?";
$stmt6 = $con->prepare($query6) or die(mysqli_error($con));
$stmt6->bind_param('ii', $user_id, $user_id) or die ("MySQLi-stmt binding failed ".$stmt6->error);
$stmt6->execute() or die ("MySQLi-stmt execute failed ".$stmt6->error);
$stmt6->close();
} //end of while 1.
}
echo "The numbers are " . $id_list;
$stmt2->close();