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<?php
/**
* Give DB
*
* @package Give
* @subpackage Classes/Give_DB
* @copyright Copyright (c) 2016, GiveWP
* @license https://opensource.org/licenses/gpl-license GNU Public License
* @since 1.0
*/
// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
/**
* Give_DB Class
*
* This class is for interacting with the database table.
*
* @since 1.0
*/
abstract class Give_DB {
/**
* The name of our database table
*
* @since 1.0
* @access public
*
* @var string
*/
public $table_name;
/**
* Set Minimum Index Length
*
* @since 2.0.1
* @access public
*
* @var int
*/
public $min_index_length = 191;
/**
* The version of our database table
*
* @since 1.0
* @access public
*
* @var string
*/
public $version;
/**
* The name of the primary column
*
* @since 1.0
* @access public
*
* @var string
*/
public $primary_key;
/**
* Class Constructor
*
* Set up the Give DB Class.
*
* @since 1.0
* @access public
*/
public function __construct() {
if ( is_multisite() ) {
add_action( 'switch_blog', array( $this, 'handle_switch_blog' ), 10, 2 );
}
}
/**
* Whitelist of columns
*
* @since 1.0
* @access public
*
* @return array Columns and formats.
*/
public function get_columns() {
return array();
}
/**
* Default column values
*
* @since 1.0
* @access public
*
* @return array Default column values.
*/
public function get_column_defaults() {
return array();
}
/**
* Retrieve a row by the primary key
*
* @since 1.0
* @access public
*
* @param int $row_id Row ID.
*
* @return object
*/
public function get( $row_id ) {
/* @var WPDB $wpdb */
global $wpdb;
// Bailout.
if ( empty( $row_id ) ) {
return null;
}
return $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $this->table_name WHERE $this->primary_key = %s LIMIT 1;", $row_id ) );
}
/**
* Retrieve a row by a specific column / value
*
* @since 1.0
* @access public
*
* @param int $column Column ID.
* @param int $row_id Row ID.
*
* @return object
*/
public function get_by( $column, $row_id ) {
/* @var WPDB $wpdb */
global $wpdb;
// Bailout.
if ( empty( $column ) || empty( $row_id ) ) {
return null;
}
$column = esc_sql( $column );
return $wpdb->get_row( $wpdb->prepare( "SELECT * FROM $this->table_name WHERE $column = %s LIMIT 1;", $row_id ) );
}
/**
* Retrieve all rows by a specific column / value
* Note: currently support string comparision
*
* @since 2.2.4
* @access public
*
* @param array $column_args Array contains column key and expected value.
*
* @return array
*/
public function get_results_by( $column_args ) {
/* @var WPDB $wpdb */
global $wpdb;
// Bailout.
if ( empty( $column_args ) ) {
return null;
}
$column_args = wp_parse_args(
$column_args,
array(
'relation' => 'AND',
)
);
$relation = $column_args['relation'];
unset( $column_args['relation'] );
$where = array();
foreach ( $column_args as $column_name => $column_value ) {
$where[] = esc_sql( $column_name ) . "='$column_value'";
}
$where = implode( " {$relation} ", $where );
return $wpdb->get_results( "SELECT * FROM {$this->table_name} WHERE {$where};" );
}
/**
* Retrieve a specific column's value by the primary key
*
* @since 1.0
* @access public
*
* @param int $column Column ID.
* @param int $row_id Row ID.
*
* @return string Column value.
*/
public function get_column( $column, $row_id ) {
/* @var WPDB $wpdb */
global $wpdb;
// Bailout.
if ( empty( $column ) || empty( $row_id ) ) {
return null;
}
$column = esc_sql( $column );
return $wpdb->get_var( $wpdb->prepare( "SELECT $column FROM $this->table_name WHERE $this->primary_key = %s LIMIT 1;", $row_id ) );
}
/**
* Retrieve a specific column's value by the the specified column / value
*
* @since 1.0
* @access public
*
* @param int $column Column ID.
* @param string $column_where Column name.
* @param string $column_value Column value.
*
* @return string
*/
public function get_column_by( $column, $column_where, $column_value ) {
/* @var WPDB $wpdb */
global $wpdb;
// Bailout.
if ( empty( $column ) || empty( $column_where ) || empty( $column_value ) ) {
return null;
}
$column_where = esc_sql( $column_where );
$column = esc_sql( $column );
return $wpdb->get_var( $wpdb->prepare( "SELECT $column FROM $this->table_name WHERE $column_where = %s LIMIT 1;", $column_value ) );
}
/**
* Insert a new row
*
* @since 1.0
* @access public
*
* @param array $data
* @param string $type
*
* @return int
*/
public function insert( $data, $type = '' ) {
/* @var WPDB $wpdb */
global $wpdb;
// Set default values.
$data = wp_parse_args( $data, $this->get_column_defaults() );
/**
* Fires before inserting data to the database.
*
* @since 1.0
*
* @param array $data
*/
do_action( "give_pre_insert_{$type}", $data );
// Initialise column format array
$column_formats = $this->get_columns();
// Force fields to lower case
// $data = array_change_key_case( $data );
// White list columns
$data = array_intersect_key( $data, $column_formats );
// Reorder $column_formats to match the order of columns given in $data
$data_keys = array_keys( $data );
$column_formats = array_merge( array_flip( $data_keys ), $column_formats );
$wpdb->insert( $this->table_name, $data, $column_formats );
/**
* Fires after inserting data to the database.
*
* @since 1.0
*
* @param int $insert_id
* @param array $data
*/
do_action( "give_post_insert_{$type}", $wpdb->insert_id, $data );
return $wpdb->insert_id;
}
/**
* Update a row
*
* @since 1.0
* @access public
*
* @param int $row_id Column ID
* @param array $data
* @param string $where Column value
*
* @return bool
*/
public function update( $row_id, $data = array(), $where = '' ) {
/* @var WPDB $wpdb */
global $wpdb;
// Row ID must be positive integer
$row_id = absint( $row_id );
if ( empty( $row_id ) ) {
return false;
}
if ( empty( $where ) ) {
$where = $this->primary_key;
}
// Initialise column format array
$column_formats = $this->get_columns();
// Force fields to lower case
$data = array_change_key_case( $data );
// White list columns
$data = array_intersect_key( $data, $column_formats );
// Reorder $column_formats to match the order of columns given in $data
$data_keys = array_keys( $data );
$column_formats = array_merge( array_flip( $data_keys ), $column_formats );
if ( false === $wpdb->update( $this->table_name, $data, array( $where => $row_id ), $column_formats ) ) {
return false;
}
return true;
}
/**
* Delete a row identified by the primary key
*
* @since 1.0
* @access public
*
* @param int $row_id Column ID.
*
* @return bool
*/
public function delete( $row_id = 0 ) {
/* @var WPDB $wpdb */
global $wpdb;
// Row ID must be positive integer
$row_id = absint( $row_id );
if ( empty( $row_id ) ) {
return false;
}
if ( false === $wpdb->query( $wpdb->prepare( "DELETE FROM $this->table_name WHERE $this->primary_key = %d", $row_id ) ) ) {
return false;
}
return true;
}
/**
* Check if the given table exists
*
* @since 1.3.2
* @access public
*
* @param string $table The table name.
*
* @return bool If the table name exists.
*/
public function table_exists( $table ) {
/* @var WPDB $wpdb */
global $wpdb;
$table = sanitize_text_field( $table );
return $wpdb->get_var( $wpdb->prepare( "SHOW TABLES LIKE '%s'", $table ) ) === $table;
}
/**
* Checks whether column exists in a table or not.
*
* @param string $column_name Name of the Column in Database Table.
*
* @since 1.8.18
*
* @see https://gist.github.com/datafeedr/54e89e07f87232fb055121bb766743fe
*
* @return bool
*/
public function does_column_exist( $column_name ) {
global $wpdb;
$column = $wpdb->get_results(
$wpdb->prepare(
'SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = %s AND TABLE_NAME = %s AND COLUMN_NAME = %s ',
DB_NAME,
$this->table_name,
$column_name
)
);
if ( ! empty( $column ) ) {
return true;
}
return false;
}
/**
* Check if the table was ever installed
*
* @since 1.6
* @access public
*
* @return bool Returns if the customers table was installed and upgrade routine run.
*/
public function installed() {
return $this->table_exists( $this->table_name );
}
/**
* Register tables
*
* @since 1.8.9
* @access public
*/
public function register_table() {
$current_version = get_option( $this->table_name . '_db_version' );
if ( ! $current_version || version_compare( $current_version, $this->version, '<' ) ) {
$this->create_table();
}
}
/**
* Create table
*
* @since 1.8.9
* @access public
*/
public function create_table() {
}
/**
* Given a ID, make sure it's a positive number, greater than zero before inserting or adding.
*
* @access private
* @since 2.0
*
* @param int $id A passed ID.
*
* @return int|bool The normalized log ID or false if it's found to not be valid.
*/
public function sanitize_id( $id ) {
if ( ! is_numeric( $id ) ) {
return false;
}
$id = (int) $id;
// We were given a non positive number.
if ( absint( $id ) !== $id ) {
return false;
}
if ( empty( $id ) ) {
return false;
}
return absint( $id );
}
/**
* Handle switch blog on multi-site
*
* @since 2.0.4
*
* @access public
*
* @param $new_blog_id
* @param $prev_blog_id
*/
public function handle_switch_blog( $new_blog_id, $prev_blog_id ) {
global $wpdb;
// Bailout.
if ( $new_blog_id === $prev_blog_id ) {
return;
}
$this->table_name = str_replace(
1 != $prev_blog_id ? $wpdb->get_blog_prefix( $prev_blog_id ) : $wpdb->base_prefix,
1 != $new_blog_id ? $wpdb->get_blog_prefix( $new_blog_id ) : $wpdb->base_prefix,
$this->table_name
);
if ( $this instanceof Give_DB_Meta ) {
$wpdb->{$this->get_meta_type() . 'meta'} = $this->table_name;
}
}
}