Question

    <p><?php include 'header.php'; ?></p>
    <div align="justify">

        <td>Name:<input type="text" name="password" ></td> <!-- database -->
        <td>&nbsp; Rank:<select>
                <!--<option value="volvo">//Database</option>
                    <option value="saab">Saab</option>
                -->
                <?php
                require ("dbfunction.php");
                $con = getDbConnect();

        <td>&nbsp;<input type="checkbox" name="vehicle" value="Bike">Group by Rank</td> <!-- database -->
        <td>&nbsp;<input type="checkbox" name="vehicle" value="Bike">Include previous service terms</td>  <!-- database -->
    </div>
    <p><table>
        <tr>
            <th>Name</th>
            <th>Rank</th>
            <th>Start Date</th>
            <th>End Date</th>
            <th>Watchkeeping</th>
            <th>Active</th>
            <th></th>
            <th></th>
        </tr> <!-- database -->
        <tr> <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
            <?php
            if (!mysqli_connect_errno($con)) {

                $queryStr = "SELECT * " .
                        "FROM crewlist";
            }
            $result = mysqli_query($con, $queryStr);
            while ($row = mysqli_fetch_array($result)) {
                 //echo "<div><a href=http://localhost/poshproject/crewlisting.php?crew_name={$row["crew_id"]}>";


                echo "<tr>.<th>" . $row["crew_name"] . "<br></br>" . "</th>";
                echo "<th>" . $row["crew_rank"] . "</th>";
                echo "<th>" . $row["start_date"] . "</th>";
                echo "<th>" . $row["end_date"] . "</th>";
                echo "<th>" . $row["watchkeeping"] . "</th>";
                echo "<th>" . $row["active"] . "</th>";
                echo "<td><a href=\"editcrew.php?id=" . $row['crew_id'] . "\">Edit</a>";
                //echo "<td><center><button type=\"submit\" name=\"Delete\" value="' . $row['crew_id'].'"/>Delete</button></center></td>";
                echo "<td><a href=\"delete.php?id=" . $row['crew_id'] . "\">Delete</a>";
            }
            ?>
            <!--                
                            <td><center><button type="submit" value="Edit">Edit</button></center></td>
                    <td><center><button type="submit" value="Delete">Delete</button></center></td>-->
        </form></tr>

    </tr>
</table>

---------------------delete.php---------------------
<?php
//print_r($_GET);
include 'dbfunction.php';
$con = getDbConnect();

if (!mysqli_connect_errno($con)) {
   $queryStr = "SELECT * FROM crewlist";
}
$result = mysqli_query($con, $queryStr);
while ($row = mysqli_fetch_array($result)) {
     if (!mysqli_connect_errno($con)) {
        $sqliQueryStr = "DELETE FROM `posh`.`crewlist` WHERE crew_id = ". $row['crew_id'] . "";
                }
      mysqli_query($con, $sqliQueryStr);
      header('Location: crewlisting.php');
      mysqli_close($con);
      //echo "user has been deleted";
   }
 ?>

删除功能仅适用于数据库的第一行。当我删除不是第一行的行时，它会删除第一行。

，当我尝试了很多东西时，不确定错误在哪里。

Answer 1

更改您的删除查询，如下所示

library(grid)
# devtools::install_github('baptiste/gridextra')
library(gridExtra)
df <- data.frame(id = c("a","b","c","d"), 
                 s1.pch = c(NA,5,5,5), 
                 s1.col = c(NA,"red","green","yellow"), 
                 s2.pch = c(3,3,3,3), 
                 s2.col = c("blue","red","green","yellow"), 
                 s3.pch = c(1,1,NA,1), 
                 s3.col = c("blue","red",NA,"yellow"))

d <- data.frame(id=df$id, 
                s1 = paste(df$s1.col, df$s1.pch, sep=","),
                s2 = paste(df$s2.col, df$s2.pch, sep=","),
                s3 = paste(df$s3.col, df$s3.pch, sep=","))


my_fun <- function(label, ...){

  s <- strsplit(label, ",")[[1]]
  col <- s[1]
  pch <- ifelse(s[2]=="NA", NA, as.numeric(s[2]))

  pointsGrob(0.5,0.5,pch=pch, gp=gpar(col=col, lwd=3, cex=0.5))
}

tt <- ttheme_minimal(12, core=list(fg_fun = my_fun), 
                     rowhead=list(fg_params=list(fontface="bold")))

grid.newpage()
grid.table(d[,-1], rows=levels(d[,1]), theme = tt)

PHP数据库删除功能只适用于数据库的第一行？

1 个答案: