Does php have a mysql_connect function?

There is the "mysql_connect()" function in PHP. This function is used to open a non-persistent MySQL connection. If successful, it will return a MySQL connection identifier. If it fails, it will return false. The syntax is "mysql_connect(server, username, password, newlink, clientflag)".

The operating environment of this article: Windows 10 system, PHP version 7.1, Dell G3 computer.

Does PHP have a mysql_connect function?

The mysql_connect() function opens a non-persistent MySQL connection.

Syntax

mysql_connect(server,user,pwd,newlink,clientflag)

• server Optional. Specifies the server to connect to. Can include the port number, such as "hostname:port", or the path to the local socket, such as ":/path/to/socket" for localhost. If the PHP directive mysql.default_host is not defined (the default case), the default value is 'localhost:3306'.

• user Optional. username. The default value is the username of the server process owner.

• pwd Optional. password. The default value is an empty password.

• newlink Optional. If mysql_connect() is called a second time with the same parameters, a new connection will not be established, but the ID of the already opened connection will be returned. The parameter new_link changes this behavior and makes mysql_connect() always open a new connection, even when mysql_connect() has been called previously with the same parameters.

• clientflag Optional. The client_flags parameter can be a combination of the following constants:

MYSQL_CLIENT_SSL - Use SSL encryption

MYSQL_CLIENT_COMPRESS - Use compression protocol

MYSQL_CLIENT_IGNORE_SPACE - Allow after the function name Interval

MYSQL_CLIENT_INTERACTIVE - Allows interaction timeout inactivity time before closing the connection

Return value

If successful, a MySQL connection identifier is returned, otherwise FALSE is returned.

Examples are as follows:

<?php
$con = mysql_connect("localhost","mysql_user","mysql_pwd");
if (!$con)
  {
  die(&#39;Could not connect: &#39; . mysql_error());
  }// 一些代码...mysql_close($con);
?>

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