mysqli
How to start and end transaction in mysqli?
Update Novembre 2020: @Dharman gave a better answer with more details about transactions in mysqli, just check it instead: https://stackoverflow.com/a/63764001/569101 👇 Well according to the php doc, you’re right. <?php $mysqli = new mysqli(“localhost”, “my_user”, “my_password”, “world”); /* check connection */ if (mysqli_connect_errno()) { printf(“Connect failed: %s\n”, mysqli_connect_error()); exit(); } $mysqli->query(“CREATE TABLE Language LIKE CountryLanguage”); … Read more
MySQLi count(*) always returns 1
You have to fetch that one record, it will contain the result of Count() $result = $db->query(“SELECT COUNT(*) FROM `table`”); $row = $result->fetch_row(); echo ‘#: ‘, $row[0];
mysqli::query(): Couldn’t fetch mysqli
Probably somewhere you have DBconnection->close(); and then some queries try to execute . Hint: It’s sometimes mistake to insert …->close(); in __destruct() (because __destruct is event, after which there will be a need for execution of queries)
mysqli_fetch_array() expects parameter 1 to be mysqli_result, boolean given in [duplicate]
The query given to mysqli_query() is failing and returning false. Put this after mysqli_query() to see what’s going on. if (!$check1_res) { trigger_error(mysqli_error($con), E_USER_ERROR); } For more information: http://www.php.net/manual/en/mysqli.error.php
MySQLi equivalent of mysql_result()?
The following function fully replicates the mysql_result() function, and returns false when you are out-of-bounds on your request (empty result, no row of that number, no column of that number). It does have the added benefit that, if you don’t specify the row, it assumes 0,0 (one less value to be passed). The function allows … Read more
PHP MySQLI Prevent SQL Injection [duplicate]
Any query can be injected whether it’s read or write, persistent or transient. Injections can be performed by ending one query and running a separate one (possible with mysqli), which renders the intended query irrelevant. Any input to a query from an external source whether it is from users or even internal should be considered … Read more