====== mysql_fetch_arrayの添字 ======

mysql_fetch_array関数は引数によって、添字を付けるかどうかなど指定できる
何も引数を指定しなければ、MYSQL_BOTHになる。


==== 引数一覧 ====

|MYSQL_ASSOC|連想添字（DBキー名）|
|MYSQL_NUM|数値添字|
|MYSQL_BOTH|両方（デフォルト）|



==== 例 ====

=== MySQL Database ===

<code console>
mysql> select * from test;
+----+-----------------+-----------+
| id | ip              | hostname  |
+----+-----------------+-----------+
|  1 | 192.168.1.1     | test1     | 
|  2 | 192.168.1.2     | test2     |
+----+-----------------+-----------+
</code>

=== PHP ===

<code>
$result = mysql_query($sql, $con);
while( $data = mysql_fetch_array($result, MYSQL_BOTH) ){
    print_r($data);
}
</code>

=== 結果 ===

== MYSQL_BOTH ==
<code>
Array ( [id] => 1 [0] => 1 [ip] => 192.168.1.1 [1] => 192.168.1.1 [hostname] => test1 [1] => test1)
Array ( [id] => 2 [0] => 2 [ip] => 192.168.1.2 [1] => 192.168.1.2 [hostname] => test2 [1] => test2)
</code>

== MYSQL_ASSOC==
<code>
Array ( [id] => 1 [ip] => 192.168.1.1 [hostname] => test1)
Array ( [id] => 2 [ip] => 192.168.1.2 [hostname] => test2)
</code>

== MYSQL_NUM==
<code>
Array ( [0] => 1 [1] => 192.168.1.1 [1] => test1)
Array ( [0] => 2 [1] => 192.168.1.2 [1] => test2)
</code>

{{tag>mysql}}