PHP LibrariesDatabase operation classPDO database operation class in php version (only applicable to Mysql)Aphp version of PDO database operation class (only applicable to Mysql)
* Parameter Description
* int $debug Whether to enable debugging, if enabled, the sql statement will be output* 0 Not enabled
* 1 Open
* 2 Start and terminate the program
* int $mode return type
* 0 Return multiple records
* 1 Return a single record
* 2 Return the number of rows
* string/array $table database table, two value-passing modes
* Normal mode:
* 'tb_member, tb_money'
* Array mode:
* array('tb_member', 'tb_money')
* string/array $fields Database fields to be queried, allowed to be empty, default is to search all, two value-passing modes
* Normal mode:
* 'username, password'
* Array mode:
* array('username', 'password')
* string/array $sqlwhere query conditions, empty allowed, two value-passing modes
* Normal mode:
* 'and type = 1 and username like "%os%"'
* Array mode:
* array('type = 1', 'username like "%os%"')
* string $orderby sorting, the default is id reverse order
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