Implementation method of php database deletion
php删除数据库的方法:首先创建一个PHP示例文件;然后通过mysql_connect函数连接数据库;最后通过执行语句“DROP DATABASE test_db”来删除数据库即可。
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使用 PHP 删除 MySQL 数据库
删除一个数据库
如果数据库不再需要那么它将可以被永远删除。您可以使用 SQL 命令传递给 mysql_query 执行删除一个数据库。
例子
尝试以下例子来删除一个数据库。
<?php $dbhost = 'localhost:3036'; $dbuser = 'root'; $dbpass = 'rootpassword'; $conn = mysql_connect($dbhost, $dbuser, $dbpass); if(! $conn ) { die('Could not connect: ' . mysql_error()); } $sql = 'DROP DATABASE test_db'; $retval = mysql_query( $sql, $conn ); if(! $retval ) { die('Could not delete database db_test: ' . mysql_error()); } echo "Database deleted successfully\\n"; mysql_close($conn); ?>
警告:对于删除一个数据库和表,它是非常危险的。所以删除任何表或数据库之前你应该确保你所做的一切是自愿的。
删除一个表
它通过 mysql_query 函数再次的发出一个 SQL 命令来删除任何数据库和数据表。但使用这个命令时要非常小心,因为这样做你可以在你的桌面上删除一些重要的信息。
尝试以下示例删除一个表:
<?php $dbhost = 'localhost:3036'; $dbuser = 'root'; $dbpass = 'rootpassword'; $conn = mysql_connect($dbhost, $dbuser, $dbpass); if(! $conn ) { die('Could not connect: ' . mysql_error()); } $sql = 'DROP TABLE employee'; $retval = mysql_query( $sql, $conn ); if(! $retval ) { die('Could not delete table employee: ' . mysql_error()); } echo "Table deleted successfully\\n"; mysql_close($conn); ?>
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