Note that for some reason the length of fields is 3 times the actual value if you are using UTF8 encoding.. So a varchar(10) field returns 30 here. This renders this function almost useless.
(PHP 4, PHP 5)
mysql_field_len — 返回指定字段的长度
$result
, int $field_offset
)mysql_field_len() 返回指定字段的长度。
为向下兼容仍然可以使用 mysql_fieldlen()，但反对这样做。
Note that for some reason the length of fields is 3 times the actual value if you are using UTF8 encoding.. So a varchar(10) field returns 30 here. This renders this function almost useless.
For a mysql type DECIMAL(8,4), the length is returned as 10 (M+2 as per documentation).