PHP connection MySQL problem

Tag: INI file call load causes the server func file configuration mysq Local

Learn PHP connection to MySQL, using the MYSQLI mode connection encountered problems:

Call to undefined function mysqli_connect ()

Or

Class ' mysqli ' not found

In general, the extension is not found Php_mysqli.dll

PHP is connected to MySQL in 3 ways:

Php_mysql.dll PHP5 after the elimination

Php_mysqli.dll only supports MySQL connection

Php_pdo_mysql.dll can support multiple databases

Apache+php+mysql Environment Configuration issues:

1. httpd.conf configuration of Apache server:

LoadModule php7_module "E:/amp/php-7.1.5/php7apache2_4.dll"

Phpinidir e:/amp/php-7.1.5///I pit here, there is no configuration to cause

2, PHP php.ini file configuration:

Extension_dir = "E:/amp/php-7.1.5/ext"

Extension=php_mysqli.dll

Run:

<?php
$con = Mysqli_connect ("localhost:3306", "root", "123456", "dev") or Die (' Unable to connect ');
echo "Connect Success";

?>

　　

PHP connection MySQL problem