我有一个包含发布输入的php数组。它为每个数组记录使用一个计数器，这个计数器应用于用于对帖子执行某些操作的输入名称 - 这很有用。
问题在于，如果用户的帖子未通过验证，我希望保留用户现有的输入并重新填充数组中的输入字段。
我之前使用静态字段完成了这个操作，只需存储post变量并在“value”中回显它 - 但我在使用数组时无法弄清楚如何执行此操作。有人有什么想法吗？
$counter = 0;
echo "<form method='post'>";
echo "<table class='mainlist' width='680'>";
while ($row = mysqli_fetch_array($result)) {
echo "<tr height='60'>";
echo "<td class='mainlist'><input type=text name=options[$counter] autocomplete=off onclick='this.select()' class='txt'></td>";
echo "</tr>";
$counter = $counter + 1;
}
echo "</table>";
每个请求的完整代码：
<?php
if($_SERVER["REQUEST_METHOD"] == "POST")
{
$userid = $_SESSION['login_user'];
$companyid = $_POST['companyid'];
$options = $_POST['options'];
$counter = $_POST['hiddencounter'];
$runningtotal=0;
$totaloptions = array_sum($options);
$result = mysqli_query($connection, "SELECT options_balance FROM user_options_balance WHERE user_id = '".$userid."'");
for ($i=0; $i<$counter; $i++)
{
if(empty($options[$i]))
{ /* IF NO INPUT ON OPTIONS */
/* DO NOTHING */
}
else
{
$checknewcompanies = mysqli_query($connection, "SELECT company_id FROM user_company_total_invested WHERE user_id = '".$userid."' and company_id = '" .$companyid[$i]."'");
if($checknewcompanies->num_rows == 1)
{ // do nothing
}
else
{
$runningtotal = $runningtotal + 1;
}
} /* END OF ELSE IF NOT EMPTY OPTIONS */
} /* END OF FOR LOOP */
$checkcurrentcompanies = mysqli_query($connection, "SELECT company_id FROM user_company_total_invested WHERE user_id = '".$userid."'");
$countcompanies = $checkcurrentcompanies->num_rows;
$countcheck = $runningtotal + $countcompanies;
if($countcheck <= 4)
{
while($row = mysqli_fetch_array($result))
{
$balance = $row['options_balance'];
}
if ($totaloptions>$balance)
{
$notenoughoptions= "<div style='background-color:#FF0000; border-radius: 15px; padding: 10px; color: #FFFFFF; font-size: 12px;'>Oops! You don't have enough options! Try investing less!</div>";
}
else
{
// loop through array
for ($i=0; $i<$counter; $i++)
{
if(empty($options[$i])){ /* IF NO INPUT ON OPTIONS */
/* DO NOTHING */
}
else {
if(!ctype_digit($options[$i]) or !is_numeric($options[$i])){
$charactercheck= "<div style='background-color:#FF0000; border-radius: 15px; padding: 10px; color: #FFFFFF; font-size: 12px;'>Oops! Please enter only positive numbers to invest!</div>";
}
else {
$checkcompanies = mysqli_query($connection, "SELECT company_id FROM company_main WHERE company_id = '".$companyid[$i]."'");
if($checkcompanies->num_rows != 1)
{
$companynotexist= "<div style='background-color:#FF0000; border-radius: 15px; padding: 10px; color: #FFFFFF; font-size: 12px;'>Oops! That company doesn't exist!</div>";
}
else
{
// loop through array
for ($i=0; $i<$counter; $i++)
{
if(empty($options[$i]))
{ /* IF NO INPUT ON OPTIONS */
/* DO NOTHING */
}
else
{
$query = "INSERT INTO user_company_invested(user_id, company_id, user_company_options_invested)
VALUES($userid,$companyid[$i],$options[$i])";
mysqli_query($connection, $query);
} /* END OF ELSE IF NOT EMPTY OPTIONS */
} /* END OF FOR LOOP */
$balancecheck = mysqli_query($connection, "SELECT options_balance FROM user_options_balance WHERE user_id = '".$userid."'");
while($row = mysqli_fetch_array($balancecheck))
{
$balance2 = $row['options_balance'];
}
if($balance2 > 0)
{
header('Location: user_invest.php');
}
else
{
header('Location: user_market.php');
}
} // end company check
} //end character check
} //end empty option check
} //end loop
} /* END OF NOT ENOUGH OPTIONS CHECK */
}
else
{
$toomanycompanies = "<div style='background-color:#FF0000; border-radius: 15px; padding: 10px; color: #FFFFFF; font-size: 12px;'>Oops! You can invest in a maximum of 4 companies per week. Please choose fewer companies, or invest more in some of your existing companies!</div>";
/* echo "Maximum number of companies you can invest in is 4";
echo "<br />";
echo "Companies you already are invested in: ".$countcompanies;
echo "<br />";
echo "New companies you are trying to invest in: ".$runningtotal;
echo "<br />";
echo "Total: ".$countcheck;*/
}
} /* END OF ISSET CHECK */
else
{
}
?>
<?php
$result = mysqli_query($connection,"SELECT * from company_main");
$counter=0;
echo "<form method='post'>";
echo "<table class='mainlist' width='680'>";
while($row = mysqli_fetch_array($result))
{
echo "<tr height='60'>";
echo "<td class='mainlist' width=140 align='center'>" . "<img src='".$row['company_logo']."' width='40'/>" . "</td>";
echo "<td class='mainlist' align='left' width=390 style='font-size: 15px;'>" . $row['company_name'] . "</td>";
echo "<input type=hidden name=companyid[$counter] value=" . $row['company_id'] . " />";
echo "<td class='mainlist'><input value='{$_POST['options[$counter]']}' type=text name=options[$counter] autocomplete=off onclick='this.select()' class='txt' style=' background-color: #FCFCFC;
border: solid 1px #CCCCCC;
font-size: 12px;
padding: 5px;
height: 20px;
text-align: right;'></td>";
echo "</tr>";
$counter=$counter+1;
}
echo "</table>";
echo "<input type='hidden' name='hiddencounter' value='$counter'>";
echo "
<table>
<tr>
<td width='630' height='50'></td>
<td align='right' width='60' style='color: #848580; font-size: 20px;'>Total: </td>
<td align='right' width='40' style='color: #94D90B; font-size: 20px; font-weight: bold; padding-right:20px;'><span id='sum'>0</span></td><td width='10'></td>
</tr><tr height='20px'></tr><tr>
<td width='570' align='center' style='color: #94D90B; font-size: 12px;'>";?>
<?php echo $notenoughoptions; ?>
<?php echo $charactercheck; ?>
<?php echo $toomanycompanies; ?>
<?php echo "
</td>
<td colspan='2' width='100' align='right'><input name='userinvestoptionsdynamic' type='submit' value='Invest!'></td><td width='10'></td>
</tr>
<tr height='20px'></tr>
</table>";
echo "</form>";
?>
答案 0 :(得分：0)
正确的语法是：
echo "{$arrayname($keyname)}";
因此，例如echo('value=' . $_POST['options'][$counter]);变为：
echo "value={$_POST['options'][$counter]}";