gcdb::get_col()

最后更新于：2021-11-26 08:42:18

Retrieves one column from the database.

参数

$query

(string|null) (Optional) SQL query. Defaults to previous query.

Default value: null

$x

(int) (Optional) Column to return. Indexed from 0.

响应

(array) Database query result. Array indexed from 0 by SQL result row number.

源文件

文件: gc-includes/gc-db.php

	public function get_col( $query = null, $x = 0 ) {
		if ( $this->check_current_query && $this->check_safe_collation( $query ) ) {
			$this->check_current_query = false;
		}

		if ( $query ) {
			$this->query( $query );
		}

		$new_array = array();
		// Extract the column values.
		if ( $this->last_result ) {
			for ( $i = 0, $j = count( $this->last_result ); $i < $j; $i++ ) {
				$new_array[ $i ] = $this->get_var( null, $x, $i );
			}
		}
		return $new_array;
	}