PHP8 cubrid_fetch_field
2024-03-29 09:17 更新
(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
result
result
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
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