wpdb::get_col_length( string $table, string $column ): array|false|WP_Error

3370	public function get_col_length( $table, $column ) {3371		$tablekey  = strtolower( $table );3372		$columnkey = strtolower( $column );3373 3374		// Skip this entirely if this isn't a MySQL database.3375		if ( empty( $this->is_mysql ) ) {3376			return false;3377		}3378 3379		if ( empty( $this->col_meta[ $tablekey ] ) ) {3380			// This primes column information for us.3381			$table_charset = $this->get_table_charset( $table );3382			if ( is_wp_error( $table_charset ) ) {3383				return $table_charset;3384			}3385		}3386 3387		if ( empty( $this->col_meta[ $tablekey ][ $columnkey ] ) ) {3388			return false;3389		}3390 3391		$typeinfo = explode( '(', $this->col_meta[ $tablekey ][ $columnkey ]->Type );3392 3393		$type = strtolower( $typeinfo[0] );3394		if ( ! empty( $typeinfo[1] ) ) {3395			$length = trim( $typeinfo[1], ')' );3396		} else {3397			$length = false;3398		}3399 3400		switch ( $type ) {3401			case 'char':3402			case 'varchar':3403				return array(3404					'type'   => 'char',3405					'length' => (int) $length,3406				);3407 3408			case 'binary':3409			case 'varbinary':3410				return array(3411					'type'   => 'byte',3412					'length' => (int) $length,3413				);3414 3415			case 'tinyblob':3416			case 'tinytext':3417				return array(3418					'type'   => 'byte',3419					'length' => 255,        // 2^8 - 13420				);3421 3422			case 'blob':3423			case 'text':3424				return array(3425					'type'   => 'byte',3426					'length' => 65535,      // 2^16 - 13427				);3428 3429			case 'mediumblob':3430			case 'mediumtext':3431				return array(3432					'type'   => 'byte',3433					'length' => 16777215,   // 2^24 - 13434				);3435 3436			case 'longblob':3437			case 'longtext':3438				return array(3439					'type'   => 'byte',3440					'length' => 4294967295, // 2^32 - 13441				);3442 3443			default:3444				return false;3445		}3446	}