在一个页面中连接两个不同的数据库
第二栏，在程序中，它说没有记录。不应该那样。其结果来自另一个数据库的数据。我已经有了它的代码，如果我使用包含不同的php文件与另一个mysql_connect配置（来自另一个数据库），患者信息不会像在这里看到的那样被检索：
我知道如何通过存储两个连接的不同变量来进行多个连接。但是它让我很困惑，导致它在不同的包含文件中。
屏幕截图中的该页面为editclient.php，其中包含editclient_include_inv.php，其中包含“过程”部分的代码。
editclient.php
<?
include('header.php');
if ($id) {
echo "<h1>Edit Medical Records # : $id</h1>";
}
else
{
echo " <h1>Medical Records</h1>";
}
if($submit)
{
//-------------------check user name-----------------------------------------------------
$name = $_POST['name'];
$select = "select first_name from patient where last_name = '".$last_name."';";
$query = mysql_query($select) or die ("Mysql error! It was: ".mysql_error());
$rows = mysql_num_rows($query);
if ($rows != 0)
{
echo ("<script language=javascript>alert ('Sorry! $first_name is already taken!')</script>");
echo ("<script language=javascript>document.location.href = 'editclient.php'</script>");
exit;
}
if($name == "admin"){
echo ("<script language=javascript>alert ('Sorry! $first_name is not a good thing to do!')</script>");
echo ("<script language=javascript>document.location.href = 'editclient.php'</script>");
exit;
}
//-----------------------------------end check-------------------------------------------
$sql = "INSERT INTO patient (`first_name`, `last_name`,`country`, `address`, `gender`, `telno`, `occ`, `spo`, `occ2`,`cp`, `tel2`, `reff`, `all`, `ill`, `mat`, `frat`, `datetime`, `vs`,`ppe`, `ffup`)
VALUES ('$first_name','$last_name','$country','$address','$gender','$telno','$occ','$spo','$occ2', '$cp','$tel2','$reff','$all','$ill','$mat','$frat','$datetime','$vs','$ppe','$ffup')";
$result = mysql_query($sql);
//echo ("<script language=javascript>document.location.href = 'editclient.php?id=$id&message=Patient $id has been Created!'</script>");
echo ("<SCRIPT LANGUAGE='JavaScript'>
window.alert('Succesfully Updated')
window.location.href='sample4.php';
</SCRIPT>");
}
else if($update)
{
$sql = "UPDATE patient set first_name='$first_name',last_name='$last_name',
country='$country',address='$address',gender='$gender',telno='$telno',
occ='$occ',spo='$spo',occ2='$occ2', cp='$cp', tel2='$tel2',reff='$reff', ill='$ill', mat='$mat', frat='$frat', datetime='$datetime', vs='$vs', ppe='$ppe' ,ffup='$ffup'
WHERE clientid=$id";
$result = mysql_query($sql);
//echo ("<script language=javascript>document.location.href = 'editclient.php?id=$id&message=Client $id has been Updated!'</script>");
echo ("<SCRIPT LANGUAGE='JavaScript'>
window.alert('Succesfully Updated')
window.location.href='sample4.php';
</SCRIPT>");
}
else if($id)
{
$result = mysql_query("SELECT * FROM patient WHERE clientid=$id",$db);
$row = mysql_fetch_array($result);
?>
</p>
<br><font color=red size=4><?php if (isset($_GET['message'])) { echo ' - '.$_GET['message']; } ?></font><BR>
<?
//-------------NEXT PREVIOUS----------------------------------------------------------------------
$sql ="SELECT * FROM patient WHERE clientid < '$id' ORDER by clientid DESC LIMIT 1";
$resultp = mysql_query($sql);
$previousrows = mysql_num_rows($resultp);
while ($prerow = mysql_fetch_array($resultp)) {
$prev=$prerow['clientid'];
}
//echo $prev;
$sql2 ="SELECT clientid FROM patient WHERE clientid > '$id' ORDER by clientid ASC LIMIT 1";
$resultn = mysql_query($sql2);
$nextrows = mysql_num_rows($resultn);
while ($nextrow = mysql_fetch_array($resultn)) {
$next=$nextrow['clientid'];
}
//echo $next;
if ($previousrows == "") {
echo "";
}else{
echo "<B><a href=$PHP_SELF?id=$prev>$prev <- Prev</a> | ";
}
echo "<font size=6><B>$id</B></font>";
if ($nextrows == "") {
echo "";
}else{
echo "<b> | <a href=$PHP_SELF?id=$next > Next -> $next</a></b>";
}
//-----------------end next prev-----------------------------------------------------
?><br><br>
<?php include("inc/nav.inc");?>
<form name="form2a" method="post" action="<?php echo $PHP_SELF?>">
<table width="760" border="0" cellspacing="0" cellpadding="0">
<tr>
<td class=topHeadrow1 valign="middle" width="50%" colspan="2">
Edit Patient Information:</td>
<td class=topHeadrow1 valign="middle" width="10" rowspan="20">
</td>
<td class=topHeadrow1 valign="middle" width="50%">
Procedures:</td>
</tr>
<tr>
<td valign="top" align="right">
<input type="hidden" name="id" value="<?php echo $row["clientid"]?>">
First name:<br>
</td>
<td valign="top" align="left">
<input type="text" size="20" name="first_name" value="<?php echo $row["first_name"]?>" ></td>
<td valign="top" width="10%" rowspan="13">
<?
include('editclient_include_inv.php');
?>
</td>
</tr>
<tr>
<td valign="top" align="right">
Last Name:
</td>
<td valign="top" align="left">
<input type="text" name="last_name" size="20" value="<?php echo $row["last_name"]?>"></td>
</tr>
<tr>
<td valign="top" align="right"> Gender:</td>
<td valign="top" align="left"><select name="gender">
<option value="Male">Male</option>
<option value="Female">Female</option> </select>
</td>
</tr>
<tr>
<td valign="top" align="right"> Country:</td>
<td valign="top" align="left">
<select name="country" >
<option value="Afghanistan">Afghanistan</option>
<option value="Bahrain">Bahrain</option>
<option value="Bangladesh">Bangladesh</option>
<option value="Bhutan">Bhutan</option>
<option value="Brunei">Brunei</option>
<option value="Cambodia">Cambodia</option>
<option value="China">China</option>
<option value="Malaysia">Malaysia</option>
<option value="Maldives">Maldives</option>
<option value="Mongolia">Mongolia</option>
<option value="Myanmar">Myanmar (Burma)</option>
<option value="Pakistan">Pakistan</option>
<option value="Philippines">Philippines</option>
<option value="Saudi Arabia">Saudi Arabia</option>
<option value="Singapore">Singapore</option>
<option value="Sri Lanka">Sri Lanka</option>
<option value="Syria">Syria</option>
<option value="UAE">United Arab Emirates</option>
<option value="Uzbekistan">Uzbekistan</option>
</select>
</tr>
<tr>
<td valign="top" align="right">
Tel. no.:</td>
<td valign="top" align="left">
<input
type="text" size="20" name="telno" placeholder="###-####" value="<?php echo $row["telno"]?>"></td></tr>
<tr>
<td valign="top" align="right">
Occupation:</td>
<td valign="top" align="left">
<input
type="text" size="20" name="occ" value="<?php echo $row["occ"]?>"></td></tr>
<tr>
<td align="right">
Spouse:</td>
<td >
<input
type="text" size="20" name="spo" value="<?php echo $row["spo"]?>"></td></tr><tr>
<td align="right">
Occupation:</td>
<td >
<input
type="text" size="20" name="occ2" value="<?php echo $row["occ2"]?>"></td></tr>
<tr>
<td align="right" width="20">
Contact Person(in case of emergency):</td>
<td >
<input
type="text" size="20" name="cp" value="<?php echo $row["cp"]?>"></td></tr><tr>
<td align="right">
Tel. no:</td>
<td >
<input
type="text" size="20" name="tel2" value="<?php echo $row["tel2"]?>"></td></tr>
<tr>
<td valign="top" align="right" nowrap>
Address:</td>
<td valign="top" align="left">
<input type="text" name="address" value="<?php echo $row["address"]?>" size="31"></td>
</tr>
<tr>
<td valign="top" align="right" nowrap>
Reffered By:</td>
<td valign="top" align="left">
<input type="text" name="reff" value="<?php echo $row["reff"]?>" size="31" ></td>
</tr>
<tr>
<td class=topHeadrow1 valign="middle" width="50%" colspan="2">
Past Medical History:</td>
</tr>
<tr>
<td valign="top" align="right" nowrap>
Allergy:</td>
<td valign="top" align="left">
<input type="text" name="all" value="<?php echo $row["all"]?>" size="31"></td>
</tr>
<tr>
<td valign="top" align="right" nowrap>
Previous illness:</td>
<td valign="top" align="left">
<input type="text" name="ill" value="<?php echo $row["ill"]?>" size="31"></td>
</tr>
<tr>
<td class=topHeadrow1 valign="middle" width="50%" colspan="2">
<b><font size="4">
Heredo-Familial Diseases:</font></b></td>
</tr>
<tr>
<td valign="top" align="right" nowrap>
Maternal:
</td>
<td valign="top" align="left">
<input type="text" name="mat" value="<?php echo $row["mat"]?>" size="20"></td>
</tr>
<tr>
<td valign="top" align="right" nowrap>
Fraternal:
</td>
<td valign="top" align="left">
<input type="text" name="frat" value="<?php echo $row["frat"]?>" size="20"></td>
</tr>
<tr>
<td class=topHeadrow1 valign="middle" width="50%" colspan="2">
<b><font size="4">
Examination:</font></b></td>
</tr>
<tr>
<td valign="top" align="right" nowrap>
Date / Time:</td>
<td valign="top" align="left">
<input type="text" name="datetime" value="<?php echo $row["datetime"]?>" size="31"></td>
</tr>
<tr>
<td valign="top" align="right" nowrap>
Vital Signs:</td>
<td valign="top" align="left">
<input type="text" name="vs" value="<?php echo $row["vs"]?>" size="31"></td>
</tr>
<tr>
<td align="center" nowrap>
Complain PPE Findings:</td>
<td valign="top" align="left">
<input type="text" name="ppe" value="<?php echo $row["ppe"]?>" size="31"></td>
</tr>
<tr>
<td align="center" nowrap>
Plan / Management / FF-UP</td>
<td valign="top" align="left">
<input type="text" name="ffup" value="<?php echo $row["ffup"]?>" size="31"></td>
</tr>
<tr>
<td class=topHeadrow1 valign="middle" width="100%" colspan="4">
<p align="center"><input class="form-button" type="Submit" name="update" value="Update Information"></td>
</tr>
<tr>
<td valign="top" width="100%" colspan="4">
<br>
</td>
</tr>
</table>
</form>
<?
}
else
{
//----------------------------begin add client--------------------------------------------------------
?>
<br><font color=red size=4><?php if (isset($_GET['message'])) { echo ' - '.$_GET['message']; } ?></font><BR>
<form name="form2b" method="post" action="editclient.php" onSubmit="return checkPw(this)">
<table>
<tr>
<td class="topHeadrow5" valign="top" width="100%" colspan="5">
<b><font size="4">Patient Information:</font></b></td>
</tr>
<tr>
<td valign="top" align="right">
First Name:</td>
<td valign="top" align="left">
<input
type="text" size="20" name="first_name" ></td></tr>
<tr>
<td valign="top" align="right">
Last Name:</td>
<td valign="top" align="left">
<input type="text" name="last_name" size="20"></td></tr>
<tr>
<td valign="top" align="right"> Gender:</td>
<td valign="top" align="left"><select name="gender">
<option value="Male">Male</option>
<option value="Female">Female</option> </select>
</td>
</tr>
<tr>
<td valign="top" align="right">Country:</td>
<td valign="top" align="left">
<select name="country" >
<option value="Afghanistan">Afghanistan</option>
<option value="Bahrain">Bahrain</option>
<option value="Bangladesh">Bangladesh</option>
<option value="Bhutan">Bhutan</option>
<option value="Brunei">Brunei</option>
<option value="Cambodia">Cambodia</option>
<option value="China">China</option>
<option value="Malaysia">Malaysia</option>
<option value="Maldives">Maldives</option>
<option value="Mongolia">Mongolia</option>
<option value="Myanmar">Myanmar (Burma)</option>
<option value="Pakistan">Pakistan</option>
<option value="Philippines">Philippines</option>
<option value="Saudi Arabia">Saudi Arabia</option>
<option value="Singapore">Singapore</option>
<option value="Sri Lanka">Sri Lanka</option>
<option value="Syria">Syria</option>
<option value="UAE">United Arab Emirates</option>
<option value="Uzbekistan">Uzbekistan</option>
</select>
</tr>
<tr>
<td valign="top" align="right">
Tel. no.:</td>
<td valign="top" align="left">
<input
type="text" size="20" name="telno" placeholder="###-####"></td></tr>
<tr>
<td valign="top" align="right">
Occupation:</td>
<td valign="top" align="left">
<input
type="text" size="20" name="occ" ></td></tr>
<tr>
<td align="right">
Spouse:</td>
<td >
<input
type="text" size="20" name="spo" ></td>
<td align="right">
Occupation:</td>
<td >
<input
type="text" size="20" name="occ2" ></td></tr>
<tr>
<td align="right" width="20">
Contact Person(in case of emergency):</td>
<td >
<input
type="text" size="20" name="cp" ></td>
<td align="right">
Tel. no:</td>
<td >
<input
type="text" size="20" name="tel2" ></td></tr>
<tr>
<td valign="top" align="right" nowrap>
Address:</td>
<td valign="top" align="left">
<input type="text" name="address" size="50"></td>
</tr>
<tr>
<td valign="top" align="right" nowrap>
Reffered By:</td>
<td valign="top" align="left">
<input type="text" name="reff" size="31"></td>
</tr>
<tr>
<td class="topHeadrow5" valign="top" width="200" colspan="5">
<b><font size="4">
Past Medical History:</font></b></td>
</tr>
<tr>
<td valign="top" align="right" nowrap>
Allergy:</td>
<td valign="top" align="left">
<input type="text" name="all" size="31"></td>
</tr>
<tr>
<td valign="top" align="right" nowrap>
Previous illness:</td>
<td valign="top" align="left">
<input type="text" name="ill" size="31"></td>
</tr>
<tr>
<td class="topHeadrow5" valign="top" width="100%" colspan="5">
<b><font size="4">
Heredo-Familial Diseases:</font></b></td>
</tr>
<tr>
<td valign="top" align="right" nowrap>
Maternal:
</td>
<td valign="top" align="left">
<input type="text" name="mat" size="20"></td>
</tr>
<tr>
<td valign="top" align="right" nowrap>
Fraternal:
</td>
<td valign="top" align="left">
<input type="text" name="frat" size="20"></td>
</tr>
<tr>
<td class="topHeadrow5" valign="top" width="100%" colspan="5">
<b><font size="4">
Examination:</font></b></td>
</tr>
<tr>
<td valign="top" align="right" nowrap>
Date / Time:</td>
<td valign="top" align="left">
<input type="text" name="datetime" size="31"></td>
</tr>
<tr>
<td valign="top" align="right" nowrap>
Vital Signs:</td>
<td valign="top" align="left">
<input type="text" name="vs" size="31"></td>
</tr>
<tr>
<td align="center" nowrap>
Complain PPE Findings:</td>
<td valign="top" align="left">
<input type="text" name="ppe" size="31"></td>
</tr>
<tr>
<td align="center" nowrap>
Plan / Management / FF-UP</td>
<td valign="top" align="left">
<input type="text" name="ffup" size="31"></td>
</tr>
<tr>
<td width="10%"> </td>
<td width="90%"><input class="form-button" type="Submit" name="submit" value="Enter information"></td>
</tr>
</table>
</form>
<p> </p>
<?
}
?>
editclient_include_inv.php
<?
if ($num < 1){
$mysql_hostname = "localhost";
$mysql_user = "root";
$mysql_password = "";
$mysql_database = "hmis";
$bd = mysql_connect($mysql_hostname, $mysql_user, $mysql_password) or die("Could not connect database");
mysql_select_db($mysql_database, $bd) or die("Could not select database");
//printf("<td align=left><font face=Verdana size=1 color=red>There are no Records</font></td>",$num); //prints number
$procedures = "SELECT * FROM incurredcharges WHERE patient_no = '$id'";
$result = mysql_query($procedures);
if (mysql_num_rows($result) >= 1){
$procedures = "SELECT
`incurredcharges`.`procedure_no`,
`c`.`procedure`
FROM
incurredcharges
INNER JOIN (
SELECT `procedure`, `procedure_no` FROM `charges`
UNION ALL
SELECT `confinement`, `procedure_no` FROM `confinement`
UNION ALL
SELECT `service`, `procedure_no` FROM `ultrasound`
) c ON `incurredcharges`.`procedure_no` = c.`procedure_no`
WHERE `incurredcharges`.`patient_no` = '$id'";
$result2 = mysql_query($procedures);
echo "<p><table border=1 cellspacing=0 cellpadding=2 bordercolor=#000000 width=100%>";
echo "<tr align=top>
<td class=topHeadrow5><b>Procedure #</b></td>
<td class=topHeadrow5><b>Charge Incurred</b></td></tr>";
while($row = mysql_fetch_array($result2)){
echo '
<tr>
<td>'.$row[0].'</td>
<td>'.$row[1].'</td>';
echo "</tr>";
}
echo '</table>';
}
else {
echo "<p><table border=1 cellspacing=0 cellpadding=2 bordercolor=#000000 width=100%>";
echo "<tr align=top>
<td class=topHeadrow4><b>There are no Records</b></td></tr></table>";
return false;
}
}
?>
第二个代码用于从另一个数据库检索的Procedures列。
2 个答案:
答案 0 :(得分：0)
您尚未发布任何代码，但从问题文本中，我可以看到您正在使用mysql_connect()连接到数据库。
这里要学习的第一件事是不使用mysql_xxx()函数。这有很多原因 - 首先，它们已被弃用，而且它们也是不安全的。
您应该使用PHP内置的另外两个API：mysqli或PDO。
但在这种情况下，不使用mysql函数的更好理由是它们更难以管理多个数据库连接。
另一方面，使用mysqli或PDO管理多个数据库连接非常容易。
$db1 = new PDO('mysql:host=xxxxx,etc',$user1,$pass1);
$db2 = new PDO('mysql:host=xxxxx,etc',$user2,$pass2);
$db1->query('SELECT * FROM table_on_db1');
$db2->query('SELECT * FROM table_on_db2');
因此，您可以根据需要保留尽可能多的活动连接对象，并使用适合任何给定查询的连接对象。
您可以在此处详细了解mysqli API：http://www.php.net/manual/en/book.mysqli.php
关于此处的PDO API：http://php.net/manual/en/book.pdo.php
希望有所帮助。
答案 1 :(得分：0)
mysql_connect()返回您需要存储的连接标识符，然后传入所有mysql_ *函数。这是每个脚本维护多个数据库连接的方式。
但是，不推荐使用mysql_ *函数，您应该转移到PDO或mySQLi。这将有一个额外的好处，允许您初始化和存储单独的数据库对象，而不是跟踪连接标识符。即：
$db1 = new PDO('mysql:host=host1;dbname=db1', $user1, $pass1);
$db2 = new PDO('mysql:host=host2;dbname=db2', $user2, $pass2);
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