PHP循环问题？

Question

我有这个脚本，它每行最多显示5张图片，但是由于某些原因，如果条目的数量不是5的精确倍数，我的<ul>标记将无法正确关闭。我如何纠正这个问题，以便即使列出的图片数量少于5张，<ul>标签也会关闭？

这是我的PHP代码。

if (!$dbc) {
    print mysqli_error($mysqli);
} else {
    $row_count = 0;
    while($row = mysqli_fetch_array($dbc)){ 
        if($row_count % 5 == 0){
         echo "<ul>";
        }
       echo "<li><a href='" .$row["url"]. "' title='".$row['title']."'>";
        echo "<img src='".$row['src']."'></a></li>";
       if($row_count % 5 == 4) {
         echo "</ul>";
       }
       $row_count++;
    }

}

Answer 1

$multiple = false;

if (!$dbc) {
    print mysqli_error($mysqli);
} else {
    $row_count = 0;
    while($row = mysqli_fetch_array($dbc)){ 
        if($row_count % 5 == 0){
         echo "<ul>";
        }
       echo "<li><a href='" .$row["url"]. "' title='".$row['title']."'>";
        echo "<img src='".$row['src']."'></a></li>";
       if($row_count % 5 == 4) {
         $multiple = true;
         echo "</ul>";
       } else {
        $multiple = false;
       }
       $row_count++;
    }
    if($multiple == false) {
        echo "</ul>";
    }

}

Answer 2

在循环下面，检查是否

if (!$dbc) {
    print mysqli_error($mysqli);
} else {
    $row_count = 0;
    while($row = mysqli_fetch_array($dbc)){ 
        if($row_count % 5 == 0){
         echo "<ul>";
        }
       echo "<li><a href='" .$row["url"]. "' title='".$row['title']."'>";
        echo "<img src='".$row['src']."'></a></li>";
       if($row_count % 5 == 4) {
         echo "</ul>";
       }
       $row_count++;
    }
    if ( (($row_count % 5) > 0) && (($row_count % 5) < 4))
        echo "</ul>";
}

Answer 3

if (!$dbc) {
print mysqli_error($mysqli);} else {
$row_count = 0;
//tank start
$total_rows = mysqli_num_rows($dbc);
//tank end
while($row = mysqli_fetch_array($dbc)){ 
    if($row_count % 5 == 0){
     echo "<ul>";
    }
   echo "<li><a href='" .$row["url"]. "' title='".$row['title']."'>";
    echo "<img src='".$row['src']."'></a></li>";
   //tank start
   if($row_count % 5 == 4 || $row_count==$total_rows) {
   //tank end
     echo "</ul>";
   }
   $row_count++;
}