Call to undefined Function:mysql_connect () appears in ubuntu16.10 PHP test connection MySQL

1. Question:

An error occurred while testing the php7.0 link MySQL database:

Fatal error:uncaught error:call to undefined function mysqli_connect ()

Even if you put a line in/etc/php/7.0/apache2/php.ini:

;extension=php_mysql.dll

Modify to (that is, cancel the semicolon before the line ";") ）：

extension=php_mysql.dll

The problem remains unresolved.

Test file:

require_once__dir__. ' /config.php ';//2. Get the user name to query (pass parameters via the address bar)$username=isset($_get[' username '])?$_get[' username ']: ';if(Empty($username)){    Echo' User name cannot be empty. ';}//3. Connect to the database$conn[Email protected]Mysqli_connect($db _host,$db _user,$db _PSW) or die(' Database connection failed. ')Mysqli_error());Var_dump($conn);

config.php file:

<? PHP /*  */$db _host= ' 127.0.0.1 '; $db _user= ' root '; $db _psw= ' 123456 '; $db _name= ' Test '; $db _charset= ' UTF8 ';

View Code

2. Effective Solutions:

• sudo apt-get install Php7.0-mysql
• sudo dpkg-reconfigure php7.0-mysql
• Sudo/etc/init.d/mysql restart
• Sudo/etc/init.d/apache2 restart

Last connection succeeded:

Reference: http://blog.sina.com.cn/s/blog_6b8bea470100qrdw.html

Call to undefined Function:mysql_connect () appears in ubuntu16.10 PHP test connection MySQL