PHP調(diào)用三種數(shù)據(jù)庫的方法(3)
Oracle（甲骨文）是世界上最為流行的關(guān)系數(shù)據(jù)庫。它是大公司推崇的工業(yè)化的強有力的引擎。我們先看看其相關(guān)的函數(shù)：（1）integer ora_logon(string user , string password)開始對一個Oracle數(shù)據(jù)庫服務(wù)器的連接。（2）integer ora_open(integer connection)打開給出的連接的游標。（3）integer ora_do(integer connection, string query)在給出的連接上執(zhí)行查詢。PHP生成一個指示器，解析查詢，并執(zhí)行之。（4）integer ora_parse(integer cursor, string query)解析一個查詢并準備好執(zhí)行。（5）boolean ora_exec(integer cursor)執(zhí)行一個先前由ora_parse函數(shù)解析過的查詢。（6）boolean ora_fetch(integer cursor)此函數(shù)會使得一個執(zhí)行過的查詢中的行被取到指示器中。這使得您可以調(diào)用ora_getcolumn函數(shù)。（7）string ora_getcolumn(integer cursor, integer column)返回當(dāng)前的值。列由零開始的數(shù)字索引。（8）boolean ora_logoff(integer connection)斷開對數(shù)據(jù)庫服務(wù)器的鏈接。以下是向ORACLE數(shù)據(jù)庫插入數(shù)據(jù)的示例程序： <html><head><title>向ORACLE數(shù)據(jù)庫中插入數(shù)據(jù)</title></head><body><form action='<?echo $PHP_SELF;?>' method='post'><table border='1' cellspacing='0' cellpadding='0'><tr><th>ID</th><th>name</th><th>Description</th></tr><tr><td><input type='text' name='name' maxlength='50' size='10'></td><td><input type='text' name='email' maxlength='255' size='30'></td><td><input type='text' name='Description' maxlength='255' size='50'></td></tr><tr align='center'><td colspan='3'><input type='submit' value='提交'> <input type='reset' value='重寫'></td></tr></table></form><?//先設(shè)置兩個環(huán)境變量ORACLE_HOME，ORACLE_SIDputenv('ORACLE_HOME=/oracle/app/oracle/product/8.0.4');putenv('ORACLE_SID=ora8');//設(shè)置網(wǎng)頁顯示中文putenv('NLS_LANG=Simplified_Chinese.zhs16cgb231280');if($connection=ora_logon('scott','tiger')) {//庫表test有ID,name,Description三項$sql = 'insert into test(ID,name,Description) values '; $sql .= '('' . $ID . '','' . $name . '',''. $Description . '')';if($cursor=ora_do($connect,$sql)) {print('insert finished!');}$query = 'select * from test';if($cursor=ora_do($connect,$query)) {ora_fetch($cursor);$content0=ora_getcolumn($cursor,0);$content1=ora_getcolumn($cursor,1);$content2=ora_getcolumn($cursor,2);print('$content0');print('$content1');print('$content2');ora_close($cursor);}ora_logoff($connection);}?></body></html>
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