PHP8 cubrid_fetch_field
(PECL CUBRID >= 8.3.1)
cubrid_fetch_field — 从结果中获取列信息并作为对象返回
说明
cubrid_fetch_field(resource $result, int $field_offset = 0): object此函数返回一个对象，该对象具有特定 列。该对象的属性包括：
name列名称
table列所属的表的名称
def列的默认值
max_length列的最大长度
not_null如果列不能为 NULL，则为 1
primary_key如果列是主键，则为 1
unique_key如果列是唯一键，则为 1
multiple_key如果列是非唯一键，则为 1
numeric如果列为数值，则为 1
blob如果列是 BLOB，则为 1
type列的类型
unsigned如果列是无符号的，则为 1
zerofill如果列为零填充，则为 1
参数
resultresult来自对 cubrid_execute（） 的调用field_offset数值字段偏移量。如果未指定字段偏移量，则 检索下一个字段（此函数尚未检索到该字段）。 从 0 开始。
field_offset
返回值
当进程成功时，具有特定列的某些属性的对象。
失败时为 false。
示例
示例 #1 cubrid_fetch_field（） example
<?php
$conn = cubrid_connect("localhost", 33000, "demodb");
$req = cubrid_execute($conn, "SELECT event_code,athlete_code,nation_code,game_date FROM game WHERE host_year=1988 and event_code=20001;");
var_dump(cubrid_fetch_row($req));
cubrid_field_seek($req, 1);
$field = cubrid_fetch_field($req);
printf("\n--- Field Properties ---\n");
printf("%-30s %s\n", "name:", $field->name);
printf("%-30s %s\n", "table:", $field->table);
printf("%-30s \"%s\"\n", "default value:", $field->def);
printf("%-30s %d\n", "max length:", $field->max_length);
printf("%-30s %d\n", "not null:", $field->not_null);
printf("%-30s %d\n", "primary key:", $field->primary_key);
printf("%-30s %d\n", "unique key:", $field->unique_key);
printf("%-30s %d\n", "multiple key:", $field->multiple_key);
printf("%-30s %d\n", "numeric:", $field->numeric);
printf("%-30s %d\n", "blob:", $field->blob);
printf("%-30s %s\n", "type:", $field->type);
printf("%-30s %d\n", "unsigned:", $field->unsigned);
printf("%-30s %d\n", "zerofill:", $field->zerofill);
cubrid_close_request($req);
cubrid_disconnect($conn);
?>以上示例会输出：
array(4) {
[0]=>
string(5) "20001"
[1]=>
string(5) "16681"
[2]=>
string(3) "KOR"
[3]=>
string(9) "1988-9-30"
}
--- Field Properties ---
name: athlete_code
table: game
default value: ""
max length: 0
not null: 1
primary key: 1
unique key: 1
multiple key: 0
numeric: 1
blob: 0
type: integer
unsigned: 0
zerofill: 0