用php語(yǔ)言實(shí)現(xiàn)數(shù)據(jù)庫(kù)連接詳細(xì)代碼介紹(2)_PHP教程

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推薦：PHP室寶序竣?php喘送圭塀崙恬抹待夕
凪嶄db_mysql.inc.php,config.php,function.php音頁(yè)寔屎聞喘欺議?購(gòu)囚頁(yè)$filename 猟周兆,厘頁(yè)宥狛響函方象垂嶄議夕頭兆各 <?php inc

function printoraerr($in_cur, $conn)
{
// 檢查Oracle是否出錯(cuò)
// 如果存在錯(cuò)誤則顯示
// 當(dāng)指針被激活時(shí)每次請(qǐng)求Oracle后調(diào)用該函數(shù)
// If it encountered an error, we exit immediately
if(ora_errorcode($in_cur))
{
echo "Oracle code - ".ora_error($in_cur)."
n";
ora_logoff($conn);
exit;
}
return;
}

function exequery($w_qry,$conn)
{
$cursor=ora_open($conn); printoraerr($cursor,$conn);
ora_parse($cursor,$w_qry,0); printoraerr($cursor,$conn);
ora_exec($cursor); printoraerr($cursor,$conn);
$numrows=0;
$w_numcols=ora_numcols($cursor);
// 顯示頭部
echo "

\n";
for ($i=0;$i<$w_numcols;$i )
{
$align=(ora_columntype($cursor,$i)=="NUMBER")?"RIGHT":"LEFT";
echo "\t ".ora_columnname($cursor,$i)." \n";
}
echo "
\n";
while(ora_fetch($cursor))
{
echo " \n";
for ($i=0;$i<$w_numcols;$i )
{
$align=(ora_columntype($cursor,$i)=="NUMBER")?"RIGHT":"LEFT";
if(ora_columntype($cursor,$i)=="LONG")
echo " ".
ora_getcolumn($cursor,$i)."
\n";
else
echo " ".ora_getcolumn($cursor,$i)." \n";
printoraerr($cursor,$conn);
}
$numrows ;
echo "
\n";
}
if ($numrows==0)
echo " Query returned no records

\n";
else
{
echo " \n";
echo " Count \n";
echo " $numrows \n";
echo "
\n";
}
echo " \n";
ora_close($cursor);
return;
}

// 主程序
if(!($conn=ora_logon("user@SID","password")))
{
echo "Error: Cannot connect to database\n";
exit;
}
$qry="SELECT
deptno \"Dept\"
,empno \"Emp\"
,empnm \"Name\"
,salary \"Salary\"
FROM
employee
ORDER BY 1,2";
exequery($qry);
ora_logoff($conn);
?>

（譯者注：以上代碼段缺少注釋，請(qǐng)讀者參考PHP Manual的Oracle數(shù)據(jù)庫(kù)函數(shù)部分）

4 基于HTTP的Oracle登錄

將以下代碼加在PHP頁(yè)面代碼之前以確認(rèn)Oracle登錄。注意你必須正確設(shè)定$ SID。

if(!isset($PHP_AUTH_USER))
{
Header("WWW-authenticate: basic realm=\"$SID\"");
Header("HTTP/1.0 401 Unauthorized");
$title="Login Instructions";
echo "

You are not authorized to enter the site

\n";
exit;
}
else
{
if (!($conn=ora_logon("$PHP_AUTH_USER@$SID",$PHP_AUTH_PW)))
{
Header("WWW-authenticate: basic realm=\"$SID\"");
Header("HTTP/1.0 401 Unauthorized");
$title="Login Instructions";
echo "

You are not authorised to enter the site

\n";
exit;
}
}
?>

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我想做一個(gè)隨機(jī)的出現(xiàn)的網(wǎng)頁(yè)，可是用rand()就是不行，聽(tīng)說(shuō)要初始化隨機(jī)數(shù)，可是怎么初始化，請(qǐng)不吝賜教，謝謝！ //第一步:初始化種子 $seedarray =microtime(); $seedstr =split(" &q