我正在尝试更新表单中未填写的某些字段，但是当我单击更新按钮时，早期存储的值将设置为 0，而新插入的值保持不变。如果我尝试编辑记录，这种情况会继续再次。之前存储的值被设置为 0。如果有人可以看看这个并帮助我，那就太好了
这是编辑页面的代码。
<?php
include 'db.php';
$mykey1=$_REQUEST['key1'];
$mykey2=$_REQUEST['key2'];
$mykey3=$_REQUEST['key3'];
$mykey4=$_REQUEST['key4'];
$mykey5=$_REQUEST['key5'];
$mykey6=$_REQUEST['key6'];
$mykey7=$_REQUEST['key7'];
$mykey8=$_REQUEST['key8'];
$mykey9=$_REQUEST['key9'];
$mykey10=$_REQUEST['key10'];
$mykey11=$_REQUEST['key11'];
$mykey12=$_REQUEST['key12'];
$mykey13=$_REQUEST['key13'];
$mykey14=$_REQUEST['key14'];
$mykey15=$_REQUEST['key15'];
$mykey16=$_REQUEST["key16"];
$t6 = "SELECT t.name FROM sicherheitsunterweisung as t where t.id = '".$mykey6."'";
$r6 = mysql_query($t6)or die($myQuery."<br/><br/>".mysql_error());
while($row = mysql_fetch_assoc($r6)){
$x6= $row['name']; //handle rows.
}
$t7 = "SELECT t.training FROM trainings as t where t.id = '".$mykey7."'";
$r7 = mysql_query($t7)or die($myQuery."<br/><br/>".mysql_error());
while($row = mysql_fetch_assoc($r7)){
$x7= $row['training']; //handle rows.
}
$t8 = "SELECT t.training FROM trainings as t where t.id = '".$mykey8."'";
$r8 = mysql_query($t8)or die($myQuery."<br/><br/>".mysql_error());
while($row = mysql_fetch_assoc($r8)){
$x8= $row['training']; //handle rows.
}
$t9 = "SELECT t.training FROM trainings as t where t.id = '".$mykey9."'";
$r9 = mysql_query($t9)or die($myQuery."<br/><br/>".mysql_error());
while($row = mysql_fetch_assoc($r9)){
$x9= $row['training']; //handle rows.
}
$t10 = "SELECT t.training FROM trainings as t where t.id = '".$mykey10."'";
$r10 = mysql_query($t10)or die($myQuery."<br/><br/>".mysql_error());
while($row = mysql_fetch_assoc($r10)){
$x10= $row['training']; //handle rows.
}
$t11 = "SELECT t.training FROM trainings as t where t.id = '".$mykey11."'";
$r11 = mysql_query($t11)or die($myQuery."<br/><br/>".mysql_error());
while($row = mysql_fetch_assoc($r11)){
$x11= $row['training']; //handle rows.
}
$t12 = "SELECT t.training FROM trainings as t where t.id = '".$mykey12."'";
$r12 = mysql_query($t12)or die($myQuery."<br/><br/>".mysql_error());
while($row = mysql_fetch_assoc($r12)){
$x12= $row['training']; //handle rows.
}
$t13 = "SELECT t.training FROM trainings as t where t.id = '".$mykey13."'";
$r13 = mysql_query($t13)or die($myQuery."<br/><br/>".mysql_error());
while($row = mysql_fetch_assoc($r13)){
$x13= $row['training']; //handle rows.
}
$t14 = "SELECT t.training FROM trainings as t where t.id = '".$mykey14."'";
$r14 = mysql_query($t14)or die($myQuery."<br/><br/>".mysql_error());
while($row = mysql_fetch_assoc($r14)){
$x14= $row['training']; //handle rows.
}
$t15 = "SELECT t.training FROM trainings as t where t.id = '".$mykey15."'";
$r15 = mysql_query($t15)or die($myQuery."<br/><br/>".mysql_error());
while($row = mysql_fetch_assoc($r15)){
$x15= $row['training']; //handle rows.
}
$t16 = "SELECT t.training FROM trainings as t where t.id = '".$mykey16."'";
$r16 = mysql_query($t16)or die($myQuery."<br/><br/>".mysql_error());
while($row = mysql_fetch_assoc($r16)){
$x16= $row['training']; //handle rows.
}
echo "<form action='update.php?key1=" . $mykey1 . "'method='POST'>";
echo "<center><table>";
echo "<TR><TD>ID Number</TD><TD><INPUT TYPE=text name='pers_nr' value=$mykey1 disabled = true></TD></TR>";
echo "<TR><TD>Family Name</TD><TD><INPUT TYPE=text name='n_name' value=$mykey2 disabled = true ></TD></TR>";
echo "<TR><TD>First Name</TD><TD><INPUT TYPE=text name='v_name' value=$mykey3 disabled = true></TD></TR>";
echo "<TR><TD>Access Level</TD><TD><INPUT TYPE=text name='berectigung_id' value=$mykey4 disabled = true></TD></TR>";
echo "<TR><TD>Sicherheitsunterweisung</TD><TD><INPUT TYPE=text name='sicherheisunterweisung_id' value=$x6 disabled = true ></TD></TR>";
echo "<TR><TD>Experience</TD><TD><INPUT TYPE=text name='erfahrungen_id' value=$mykey5 ></TD></TR>";
if($x7!= NULL)
{
echo "<TR><TD>Schulung 1</TD><TD><INPUT TYPE=text name='schulungen_id1' value=$x7 disabled = true></TD></TR>";
}
else {
$sql1="SELECT id,training FROM trainings as s";
$result=mysql_query($sql1);
echo "<TR><TD> Schulung 1</TD><TD> <select name='schulungen_id1'><option value default>$x7</option>";
while ($row = mysql_fetch_array($result))
{
echo "<option value='".$row['id']."'>" . $row['training'] . "</option>";
}
echo "</select></TD></TR>";
}
if($x8!= NULL)
{
echo "<TR><TD>Schulung 2</TD><TD><INPUT TYPE=text name='schulungen_id2' value=$x8 disabled = true></TD></TR>";
}
else {
$sql2="SELECT id,training FROM trainings as s";
$result=mysql_query($sql2);
echo "<TR><TD> Schulung 2</TD><TD> <select name='schulungen_id2'><option value default>$x8</option>";
while ($row = mysql_fetch_array($result))
{
echo "<option value='".$row['id']."'>" . $row['training'] . "</option>";
}
echo "</select></TD></TR>";
}
if($x9!= NULL)
{
echo "<TR><TD>Schulung 3</TD><TD><INPUT TYPE=text name='schulungen_id3' value=$x9 disabled = true></TD></TR>";
}
else {
$sql3="SELECT id,training FROM trainings as s";
$result=mysql_query($sql1);
echo "<TR><TD> Schulung 3 </TD><TD><select name='schulungen_id3'><option value default>$x9</option>";
while ($row = mysql_fetch_array($result))
{
echo "<option value='".$row['id']."'>" . $row['training'] . "</option>";
}
echo "</select></TD></TR>";
}
if($x10!= NULL)
{
echo "<TR><TD>Schulung 4</TD><TD><INPUT TYPE=text name='schulungen_id4' value=$x10 disabled = true></TD></TR>";
}
else {
$sql4="SELECT id,training FROM trainings as s";
$result=mysql_query($sql4);
echo "<TR><TD> Schulung 4 </TD><TD><select name='schulungen_id4'><option value default>$x10</option>";
while ($row = mysql_fetch_array($result))
{
echo "<option value='".$row['id']."'>" . $row['training'] . "</option>";
}
echo "</select></TD></TR>";
}
if($x11 != NULL)
{
echo "<TR><TD>Schulung 5</TD><TD><INPUT TYPE=text name='schulungen_id5' value=$x11 disabled = true></TD></TR>";
}
else {
$sql5="SELECT id,training FROM trainings as s";
$result=mysql_query($sql5);
echo "<TR><TD> Schulung 5 </TD><TD><select name='schulungen_id5'><option value default>$x11</option>";
while ($row = mysql_fetch_array($result))
{
echo "<option value='".$row['id']."'>" . $row['training'] . "</option>";
}
echo "</select></TD></TR>";
}
if($x12 != NULL)
{
echo "<TR><TD>Schulung 6</TD><TD><INPUT TYPE=text name='schulungen_id6' value=$x12 disabled = true></TD></TR>";
}
else
{
$sql6="SELECT id,training FROM trainings as s";
$result=mysql_query($sql6);
echo "<TR><TD> Schulung 6 </TD><TD><select name='schulungen_id6'><option value default>$x12</option>";
while ($row = mysql_fetch_array($result))
{
echo "<option value='".$row['id']."'>" . $row['training'] . "</option>";
}
echo "</select></TD></TR>";
}
if($x13!= NULL)
{
echo "<TR><TD>Schulung 7</TD><TD><INPUT TYPE=text name='schulungen_id7' value=$x13 disabled = true></TD></TR>";
}
else {
$sql7="SELECT id,training FROM trainings as s";
$result=mysql_query($sql7);
echo "<TR><TD> Schulung 7</TD><TD> <select name='schulungen_id7'><option value default>$x13</option>";
while ($row = mysql_fetch_array($result))
{
echo "<option value='".$row['id']."'>" . $row['training'] . "</option>";
}
echo "</select></TD></TR>";
}
if($x14!= NULL)
{
echo "<TR><TD>Schulung 8</TD><TD><INPUT TYPE=text name='schulungen_id8' value=$x14 disabled = true></TD></TR>";
}
else {
$sql8="SELECT id,training FROM trainings as s";
$result=mysql_query($sql8);
echo "<TR><TD> Schulung 8</TD><TD> <select name='schulungen_id8'><option value default>$x14</option>";
while ($row = mysql_fetch_array($result))
{
echo "<option value='".$row['id']."'>" . $row['training'] . "</option>";
}
echo "</select></TD></TR>";
}
if($x15!= NULL)
{
echo "<TR><TD>Schulung 9</TD><TD><INPUT TYPE=text name='schulungen_id9' value=$x15 ></TD></TR>";
}
else {
$sql9="SELECT id,training FROM trainings as s";
$result=mysql_query($sql9);
echo "<TR><TD> Schulung 9 </TD><TD><select name='schulungen_id9'><option value default>$x15</option>";
while ($row = mysql_fetch_array($result))
{
echo "<option value='".$row['id']."'>" . $row['training'] . "</option>";
}
echo "</select></TD></TR>";
}
if($x16!= NULL)
{
echo "<TR><TD>Schulung 10</TD><TD><INPUT TYPE=text name='schulungen_id10' value=$x16 ></TD></TR>";
}
else {
$sql10="SELECT id,training FROM trainings as s";
$result=mysql_query($sql10);
echo "<TR><TD> Schulung 10</TD><TD> <select name='schulungen_id10'><option value default>$x16</option>";
while ($row = mysql_fetch_array($result))
{
echo "<option value='".$row['id']."'>" . $row['training'] . "</option>";
}
echo "</select></TD></TR>";
}
echo "<TR><TD><INPUT TYPE=submit value=Update></TD><TD><INPUT TYPE=reset value='cancel'></TD></TR></table>";
这是我为更新查询编写的脚本。
include 'db.php';
$myfamname = $_POST['key2'];
$myfirstname = $_POST['key3'];
$access = $_POST['key4'];
$erfahrungen = $_POST['erfahrungen_id'];
$sch1 = ($_REQUEST['schulungen_id1']);
$sch2 = ($_REQUEST['schulungen_id2']);
$sch3 = ($_REQUEST['schulungen_id3']);
$sch4 = ($_REQUEST['schulungen_id4']);
$sch5 = ($_REQUEST['schulungen_id5']);
$sch6 = ($_REQUEST['schulungen_id6']);
$sch7 = ($_REQUEST['schulungen_id7']);
$sch8 = ($_REQUEST['schulungen_id8']);
$sch9 = ($_REQUEST['schulungen_id9']);
$sch10 = ($_REQUEST['schulungen_id10']);
$berec = 1;
$schid= array(1,2,3,4,5,6,7,8,9,10);
//$erid = array (1,2,3,4,5);
$key1 = $_REQUEST['key1'];
switch ($berec)
{
case 1 :
if ((in_array($sch1,$schid)) && (in_array($sch2,$schid)) && (in_array($sch3,$schid)) && (in_array($sch4,$schid)) && (in_array($sch5,$schid)) && $erfahrungen == 2)
{
$berec = 2;
}
case 2 :
if ((in_array($sch1,$schid)) && (in_array($sch2,$schid)) && (in_array($sch3,$schid)) && (in_array($sch4,$schid)) && (in_array($sch5,$schid)) && (in_array($sch6,$schid)) && (in_array($sch7,$schid))&& (in_array($sch8,$schid)) && $erfahrungen == 3)
{
$berec = 3;
}
case 3:
if ((in_array($sch1,$schid)) && (in_array($sch2,$schid)) && (in_array($sch3,$schid)) && (in_array($sch4,$schid)) && (in_array($sch5,$schid)) && (in_array($sch6,$schid)) && (in_array($sch7,$schid))&& (in_array($sch8,$schid)) && (in_array($sch9,$schid)) && $erfahrungen == 4)
{
$berec = 4;
}
if ((in_array($sch1,$schid)) && (in_array($sch2,$schid)) && (in_array($sch3,$schid)) && (in_array($sch4,$schid)) && (in_array($sch5,$schid)) && (in_array($sch6,$schid)) && (in_array($sch7,$schid))&& (in_array($sch8,$schid)) && (in_array($sch9,$schid)) && (in_array($sch10,$schid)) && $erfahrungen == 5)
{
$berec = 5;
}
default : $access;
break;
}
$update = "update driverlicense set berectigung_id= '$berec', erfahrungen_id='$erfahrungen',sicherheisunterweisung_id = 1,schulungen_id1 = '$sch1',schulungen_id2 = '$sch2',schulungen_id3 = '$sch3',schulungen_id4 = '$sch4',schulungen_id5 = '$sch5',schulungen_id6 = '$sch6',schulungen_id7 = '$sch7',schulungen_id8 = '$sch8',schulungen_id9 = '$sch9',schulungen_id10 = '$sch10' where pers_nr = '$key1'";
$q = mysql_query($update) or die(mysql_error());
echo "<script>alert('Successfully Updated')</script>";
echo "<script>location.href='view.php'</script>";
echo "$sch5";
最佳答案
这可能是由于使用 disabled = true 引起的。
<INPUT TYPE=text name='schulungen_id1' value=$x7 disabled = true>
来自stackoverflow.com/questions/7244728/post-for-disabled-select -
This is how the disabled attribute works. When a form control is disabled, the value will be ignored when the form is submitted and the key will not be present in $_POST (or $_GET).
If you want the value to be present in the submitted data, but you don't want the user to be able to change the value on the page (which I imagine is what you are trying to acheive) use readonly="readonly" instead of disabled="disabled".
另请参阅 - https://stackoverflow.com/search?q=php+form+post+input+value+that+is+disabled
关于php - 更新查询将零值写入数据库，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/13515130/