mysql_field_len()

(PHP 4, PHP 5)

返回指定字段的长度

说明

mysql_field_len(resource $result,int $field_offset): int

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).