Php 如何在MySQL表中创建传递空数据的循环
我在MySQL中有一个表,如下所示: 为了从这个表中检索数据,我做了以下工作:Php 如何在MySQL表中创建传递空数据的循环,php,mysql,loops,oop,for-loop,Php,Mysql,Loops,Oop,For Loop,我在MySQL中有一个表,如下所示: 为了从这个表中检索数据,我做了以下工作: $menuSet = new Menus(); $menuSet->SelectMenuById($id); for($i=1;$i<=$menuSet->GetMenuItems();$i++){ $func = "GetMenuLink".$i; echo " <tr> <td>$i</td> <td>".$me
$menuSet = new Menus();
$menuSet->SelectMenuById($id);
for($i=1;$i<=$menuSet->GetMenuItems();$i++){
$func = "GetMenuLink".$i;
echo "
<tr>
<td>$i</td>
<td>".$menuSet->$func()."</td>
<td>
<a title='Edit' href=''><span class='glyphicon glyphicon-pencil'></span></a>
<a title='Remove' href='itemdelete.php?i=$i'><span class='glyphicon glyphicon-remove'></span></a>
</td>
</tr>
";
}
在这种情况下,您可以根据菜单项的值跳过循环迭代
<?php
$menuSet = new Menus();
$menuSet->SelectMenuById($id);
for($i=1;$i<=$menuSet->GetMenuItems();$i++){
$func = "GetMenuLink".$i;
$menuItemValue = $menuSet->{$func}();
if (!$menuItemValue) {
continue;
}
echo "
<tr>
<td>$i</td>
<td>" . $menuItemValue . "</td>
<td>
<a title='Edit' href=''><span class='glyphicon glyphicon-pencil'></span></a>
<a title='Remove' href='itemdelete.php?i=$i'><span class='glyphicon glyphicon-remove'></span></a>
</td>
</tr>
";
}
在for中放置if语句,仅当其不为null时才回显
还将$menuSet->GetMenuItems()
强制转换为一个变量,并在其上执行foreach循环
“$items=$menuSet->GetMenuItems()”
<?php
$menuSet = new Menus();
$menuSet->SelectMenuById($id);
for($i=1;$i<=$menuSet->GetMenuItems();$i++){
$func = "GetMenuLink".$i;
$menuItemValue = $menuSet->{$func}();
if (!$menuItemValue) {
continue;
}
echo "
<tr>
<td>$i</td>
<td>" . $menuItemValue . "</td>
<td>
<a title='Edit' href=''><span class='glyphicon glyphicon-pencil'></span></a>
<a title='Remove' href='itemdelete.php?i=$i'><span class='glyphicon glyphicon-remove'></span></a>
</td>
</tr>
";
}
foreach($items as $count=>$item){
if($menuSet->$func()){
//echo statement
}
}