我正在尝试自动化我的导航链接。如何自动回显foreach
。我现在得到了未定义的偏移。。。我可以忽略数组中的第一项(即标题)吗?
'control' => array( 0=>'Controls',
1=> array('Add school','add.school.php'),
2=> array('Add doctor','add.doctor.php'),
3=> array('Add playgroup','add.play.php'),
4=> array('Suggestions','suggestion.php'),
5=> array('List tutor service','list.tutor.php'),
6=> array('Create playgroup','create.play.php'),
7=> array('Dashboard', 'dashboard.php')
),
<?php
foreach ($nav['control'] as $value=>$key){
echo'<a href="'.$key[2].'">'.$key[1].'</a>';
}
?>
数值数组的索引是从0开始的,而不是从1开始的。您需要分别使用[1]
和[0]
。
// for key => value is more nature.
foreach ($nav['control'] as $key => $value){
// should skip the first.
if ($key === 0) {
continue;
}
// array is 0 base indexed.
echo'<a href="'.$value[1].'">'.$value[0].'</a>';
}
foreach ($nav['control'] as $value=>$key) {
echo'<a href="'.$key[1].'">'.$key[0].'</a>';
}
foreach($array as $key => $value){
if($key != 0){
foreach($value as $k => $v){
if($k == 0){ $title = $v;}
if($k == 1){ $link = $v;}
}
//put code to run for each entry here (i.e. <div> tags, echo $title and $link)
}
当我只使用两个字段时,我个人的做法是将第一个字段推入数组["id"],将第二个字段作为值,即
while($row_links = sth->fetch (PDO::FETCH_ASSOC)){
$array[$row_links['title']] = $row_links['link'];
}
然后你可以使用
<?php foreach($array as $key => $value){ ?>
<a href="<?php echo $value; ?>"><?php echo $key; ?></a>
<?php } ?>