wpdb::get_col_info() public WP 0.71

Retrieves column metadata from the last query.

{} It's a method of the class: wpdb{}

No Hooks.

Return

Mixed. Column results.

Usage

global $wpdb;
$wpdb->get_col_info( $info_type, $col_offset );

$info_type(string)

Possible values include 'name', 'table', 'def', 'max_length', 'not_null', 'primary_key', 'multiple_key', 'unique_key', 'numeric', 'blob', 'type', 'unsigned', 'zerofill'.
Default: 'name'

$col_offset(int)

0: col name. 1: which table the col's in. 2: col's max length.
3: if the col is numeric. 4: col's type.
Default: -1

Changelog

Code of wpdb::get_col_info() wpdb::get col info ^{WP 5.6}

<?php
public function get_col_info( $info_type = 'name', $col_offset = -1 ) {
	$this->load_col_info();

	if ( $this->col_info ) {
		if ( -1 === $col_offset ) {
			$i         = 0;
			$new_array = array();
			foreach ( (array) $this->col_info as $col ) {
				$new_array[ $i ] = $col->{$info_type};
				$i++;
			}
			return $new_array;
		} else {
			return $this->col_info[ $col_offset ]->{$info_type};
		}
	}
}