mysqli

来源： https://stackoverflow.com/questions/48053811/how-does-the-mysqli-fetch-assoc-function-work

问题 I have installed PHP 7, mysql5.7, Apache2.2, CentOS6. And I'm installing CodeIgniter3.0.6. When I use database connection, error occured and said A PHP Error was encountered Severity: Core Warning Message: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/php_mysqli.so' - /usr/lib64/php/modules/php_mysqli.so: cannot open shared object file: No such file or directory Filename: Unknown Line Number: 0 Of course there are no files in '/usr/lib64/php/modules/php_mysqli.so', but I

问题 This question already has an answer here : mysqli_fetch_assoc() expects parameter / Call to a member function bind_param() errors. How to get the actual mysql error and fix it? (1 answer) Closed last year . this was working about 5 minutes ago and has suddently stopped. It is a simple login form, please see code below <?php // Initialize the session session_start(); // Check if the user is already logged in, if yes then redirect him to welcome page if(isset($_SESSION["loggedin"]) && $_SESSION

问题 This question already has an answer here : mysqli_fetch_assoc() expects parameter / Call to a member function bind_param() errors. How to get the actual mysql error and fix it? (1 answer) Closed last year . this was working about 5 minutes ago and has suddently stopped. It is a simple login form, please see code below <?php // Initialize the session session_start(); // Check if the user is already logged in, if yes then redirect him to welcome page if(isset($_SESSION["loggedin"]) && $_SESSION

问题 I have one mysql table which contains 2 columns and looks like this... ------------------------------------------- | sku | superseded_sku | +---------------------+-------------------+ | part1 | part2 | | part2 | part3 | | part3 | part4 | | part5 | part6 | | part6 | part7 | the table basically shows where products sold by a company have been replaced by something newer. My task is to reshape the table to resemble the following... ------------------------------------------- | sku | superseded

问题 I installed WAMP server few hours ago into my Windows 10 64-bit computer. I used phymyadmin to create a database named ' testdb ' and tried to connect to it with a php file. I am sure that I created the database, but it returns this error: "Warning: mysqli_connect(): (HY000/1049): Unknown database 'testdb' in C:\wamp64\www\projects\index.php on line 7" Here is the php file. <?php define('DB_SERVER', 'localhost'); define('DB_USERNAME', 'root'); define('DB_PASSWORD', ''); define('DB_NAME',

问题 When I run the following code, I get the error saying Fatal error: Uncaught exception 'mysqli_sql_exception' with message 'No index used in query/prepared statement' $mysql = new mysqli(DB_SERVER, DB_USER, DB_PASSWORD, DB_NAME) or die('There was a problem connecting to the database'); if (mysqli_connect_errno()) { printf("DB error: %s", mysqli_connect_error()); exit(); } $get_emp_list = $mysql->prepare("SELECT id, name FROM calc"); if(!$get_emp_list){ echo "prepare failed\n"; echo "error: ",

问题 I'm sure this is a duplicate, but I've tried several different things on the site here and none of them are working for me. I'm calling my function in php, sending $mysqli connection, the $clientID, and the array of $tagFields to upload. It's 'working', but the values are always null. I've put echo "$tagName" inside the foreach, and it's reading it, but not sending it up to the database. $clientID, however, IS passing information. So basically all it does is upload consistently blank rows

问题 I'm trying to create a PHP countdown for my automated watering, I'm going to have crontab run this every minute and turn of the watering automatically. The code is as follows <?php error_reporting(E_ALL); ini_set('display_errors', '1'); include 'php_serial.class.php'; require_once 'login.php'; //connect to server $con = mysqli_connect($server,$username,$password); if(!$con){ die("Failed to connect:" . mysqli_connect_error()); } else { //check database connection $open_db = mysqli_select_db(

问题 Can anyone show me how to use mysqli->multi_query() to execute multiple update/ insert queries on a single connection? Thanks. I did follow the tutorials in the PHP manual. But I have some issues. My batch of queries has 5 statements separated by semicolons. UPDATE scenes set UserID = '11111111' WHERE ID = '031DFDAD92F6F4AB64AF317C06D64089DF119EC2'; INSERT INTO surfaces (ID, Name, SceneID, SurfaceTypeID, Color) VALUES('5F9A7301C2D398C4D1B90BA5AA56A9DED3FAA639', 'front ',