I can't use mysql .How should i config the file of php.ini . the message:
Fatal error: Call to undefined function mysql_errno() in /var/www/html/inc/dv_clssql.php on line 129
how should i do? please help me (2 Replies)
This problem has been killing me all day, and I cannot solve it.
Basically, I am using node.js with the mysql module and it will not connect to the database.
Here is the JS code snippet in node.js:
app.get("/test", function(req, res) {
var mysql = require("mysql");
var con =... (4 Replies)
In my further exploration of Arduino, today I decided to install the arduino-cli on my mac today.
https://github.com/arduino/arduino-cli
I followed the instructions for macOS but when I got to this part:
arduino-cli board list
I got the dreaded "Unknown" Fully Qualified Board Name... (1 Reply)
Here is a useful SSL (HTTPS) application for anyone with a remote Linux server they want to keep an eye on using Blynk and the NodeMCU ESP8266. This little app also works (have tested as well) on the WeMos D1 ESP8266 Arduino board.
The NodeMCU setup could not be easier, just find a... (8 Replies)
Here we go....
Preface:
..... so in a galaxy far, far, far away from commercial, data sharing corporations.....
For this project, I used the ESP-WROOM-32 as an MQTT (publish / subscribe) client which receives Linux server "load averages" as messages published as MQTT pub/sub messages.... (6 Replies)
After setting up MQTT and testing some ESP8266 and ESP32 modules, where I noted that testing in Programming ESP32 (ESP-WROOM-32) as an MQTT Client Subscribed to Linux Server Load Average Messages, I was so impressed with MQTT that I installed MQTT on three different computers, instantly and... (2 Replies)
Various Node-Red crypto modules do not work with PHP, so to send an encrypted message from a PHP script (in this case from a Ubuntu server) to Node-RED we need our own code.
After a few hours of searching, testing various libs, more testing and debugging, I got this PHP to Node-RED code... (0 Replies)
First, I want to thank Neo (LOL) for this post from 2018, Node.js and mysql - ER_ACCESS_DENIED_ERROR
I could not get the Node-RED mysql module to work and searched Google until all my links were purple! I kept getting ER_ACCESS_DENIED_ERROR with the right credentials. Nothing on the web was... (0 Replies)
Discussion started by: Neo
0 Replies
LEARN ABOUT PHP
mysql_pconnect
MYSQL_PCONNECT(3) 1 MYSQL_PCONNECT(3)mysql_pconnect - Open a persistent connection to a MySQL serverSYNOPSIS
Warning
This extension is deprecated as of PHP 5.5.0, and will be removed in the future. Instead, the MySQLi or PDO_MySQL extension should
be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include:
omysqli_connect(3) with
p: host prefix
o PDO::__construct with PDO::ATTR_PERSISTENT as a driver option
resource mysql_pconnect ([string $server = ini_get("mysql.default_host")], [string $username = ini_get("mysql.default_user")], [string
$password = ini_get("mysql.default_password")], [int $client_flags])
DESCRIPTION
Establishes a persistent connection to a MySQL server.
mysql_pconnect(3) acts very much like mysql_connect(3) with two major differences.
First, when connecting, the function would first try to find a (persistent) link that's already open with the same host, username and
password. If one is found, an identifier for it will be returned instead of opening a new connection.
Second, the connection to the SQL server will not be closed when the execution of the script ends. Instead, the link will remain open for
future use (mysql_close(3) will not close links established by mysql_pconnect(3)).
This type of link is therefore called 'persistent'.
o $server
- The MySQL server. It can also include a port number. e.g. "hostname:port" or a path to a local socket e.g. ":/path/to/socket"
for the localhost. If the PHP directive mysql.default_host is undefined (default), then the default value is 'localhost:3306'
o $username
- The username. Default value is the name of the user that owns the server process.
o $password
- The password. Default value is an empty password.
o $client_flags
- The $client_flags parameter can be a combination of the following constants: 128 (enable LOAD DATA LOCAL handling),
MYSQL_CLIENT_SSL, MYSQL_CLIENT_COMPRESS, MYSQL_CLIENT_IGNORE_SPACE or MYSQL_CLIENT_INTERACTIVE.
Returns a MySQL persistent link identifier on success, or FALSE on failure.
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.5.0 | |
| | |
| | This function will generate an E_DEPRECATED |
| | error. |
| | |
+--------+---------------------------------------------------+
Note
Note, that these kind of links only work if you are using a module version of PHP. See the Persistent Database Connections section
for more information.
Warning
Using persistent connections can require a bit of tuning of your Apache and MySQL configurations to ensure that you do not exceed
the number of connections allowed by MySQL.
Note
You can suppress the error message on failure by prepending a @ to the function name.
mysql_connect(3), Persistent Database Connections.
PHP Documentation Group MYSQL_PCONNECT(3)