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
Since 0.71 | Introduced. |
Code of wpdb::get_col_info() wpdb::get col info WP 5.6
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};
}
}
}