dba_fetch

(PHP 4, PHP 5, PHP 7, PHP 8)

dba_fetch — Fetch data specified by key

说明

dba_fetch(string|array $key, Dba\Connection $dba, int $skip = 0): string|false

Overloaded signature deprecated as of 8.3.0:

dba_fetch(string|array $key, int $skip, resource $dba): string

dba_fetch() fetches the data specified by key from the database specified with dba.

参数

key: The key the data is specified by.

注意:
When working with inifiles this function accepts arrays as keys where index 0 is the group and index 1 is the value name. See: dba_key_split().
dba: 一个由 dba_open() 或 dba_popen() 返回的 Dba\Connection 实例。
skip: The number of key-value pairs to ignore when using cdb databases. This value is ignored for all other databases which do not support multiple keys with the same name.

返回值

Returns the associated string if the key/data pair is found, false otherwise.

更新日志

版本	说明
8.4.0	`dba` 参数现在接受 Dba\Connection 实例，之前接受有效的 `dba` resource。
8.3.0	Calling dba_fetch() with `dba` as the 3rd argument is now deprecated.
8.2.0	dba_fetch()'s optional skip argument is now at the end in line with PHP userland semantics. The previously overloaded signature is still accepted but discouraged.

参见

dba_exists() - Check whether key exists
dba_delete() - Delete DBA entry specified by key
dba_insert() - Insert entry
dba_replace() - Replace or insert entry
dba_key_split() - Splits a key in string representation into array representation

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khan666 at lycos dot co dot kr ¶

13 years ago

:: fetch array sort.



ex) TEST_DATA.DB



    1/korea/5000/word 1

    10/japan/25000/word 10

    21/china/130000/word 21

    2/usa/35000/word 2



<?php

# LIST SORT 

$DB4_DATABASE = "TEST_DATA.DB4";

$DIV = "/";

$_FILE = "$DATA_DIR/HUTM_NETWORK_ROUTER.DB"; // DB4 FileName



$db  = dba_open($DB4_DATABASE,"r","db4");

$key = dba_firstkey($db);

$ii = 0;

while($key != NULL)

{

     $LIST[$ii] = explode($DIV,dba_fetch($key, $db));    // fetch array

    $key = dba_nextkey($db);

    $ii++;

}

dba_close($db);

$total = $ii; // total count



# date sort

sort($LIST,SORT_NUMERIC);    // numeric key sort ..



# list display

for($i=0;$i<$total;$i++)

{

    $oData = explode($DIV,$LIST[$i]);    // key + value (sort)



    $key   = trim(chop($oData[0])); # 키번호 

    $name  = trim(chop($oData[1])); # 이름 

    $count = trim(chop($oData[2])); # 수

    $word  = trim(chop($oData[3])); # 설명



    echo "$key / $name / $count / $word <br>\r\n";

}

?>



::result::



1/korea/5000/word 1

2/usa/35000/word 2

10/japan/25000/word 10

21/china/130000/word 21