how to give a if else here - php

Question

i want to include a else statement after the completion of the block after the second if for category equal to helathcare ....now i want another else for finance but i am not getting where excatly to place that else
i have a confusion on where to keep the else for finance and 2 more categories
now whenever i try to place the one else at the last goes unrecable to its if statement i donno its very confusing as to where to place 2 more else if statments for 2 more categories
<?php
global $row2;
if(isset($_POST['category']))
{
if($_POST['category']== 'Healthcare')
{
$query = "select *from event where category = 'Healthcare';";
$result=mysqli_query($conn,$query)or die(mysqli_error($conn));
while($row2= mysqli_fetch_array($result))
{
?>
<div class="events events-full event-list">
<div class="container">
<div class="row">
<div class="col-md-9 col-sm-8">
<!--Blog Post Start-->
<div class="blog-post">
<div class="post-thumb">
<div class="link-wrap"> <i class="fa fa-search"></i> <i class="fa fa-link"></i> </div>
<img src="images/gallery/<?php echo $row2['event_image']?>" alt='user'></div>
<div class="event-text">
<div class="event-counter"></div>
<h4> <?php echo($row2['title']); ?> </h4>
<p><?php echo($row2['descrption']); ?></p>
<p><span class="glyphicon glyphicon-map-marker"><?php echo($row2['location']); ?></span></p>
<p><span class="glyphicon glyphicon-grain"><?php echo($row2['organizer']); ?></span></p>
<a class="nd" href="">
<form action="eventdetail.php" method="post">
<input type='hidden' value="<?php echo $row2['id']; ?>" name='id'/>
<button type="submit" class="btn btn-primary" name="detail" value=”detail”>Event Detail</button>
</div>
</a> </div>
</div>
</form>
<!--Blog Post End-->
<?php }
}
}
else
{
global $row2;
$query = "select *from event;" ;
$result=mysqli_query($conn,$query)or die(mysqli_error($conn));
while($row2= mysqli_fetch_array($result))
{
?>
<div class="events events-full event-list">
<div class="container">
<div class="row">
<div class="col-md-9 col-sm-8">
<!--Blog Post Start-->
<div class="blog-post">
<div class="post-thumb">
<div class="link-wrap"> <i class="fa fa-search"></i> <i class="fa fa-link"></i> </div>
<img src="images/gallery/<?php echo $row2['event_image']?>" alt='user'></div>
<div class="event-text">
<div class="event-counter"></div>
<h4> <?php echo($row2['title']); ?> </h4>
<p><?php echo($row2['descrption']); ?></p>
<p><span class="glyphicon glyphicon-map-marker"><?php echo($row2['location']); ?></span></p>
<p><span class="glyphicon glyphicon-grain"><?php echo($row2['organizer']); ?></span></p>
<a class="nd" href="">
<form action="eventdetail.php" method="post">
<input type='hidden' value="<?php echo $row2['id']; ?>" name='id'/>
<button type="submit" class="btn btn-primary" name="detail" value=”detail”>Event Detail</button>
</div>
</a> </div>
</div>
</form>
<!--Blog Post End-->
<?php } } ?>
?>

Answer 1

You can't put multiple else blocks along with the if block. However, you can use multiple(as many as you want) elseif/else if blocks along with the if block, like this:
if($_POST['category'] == 'Healthcare'){
...
}elseif($_POST['category'] == 'Finance'){
...
}elseif($_POST['category'] == '...'){
...
}else{
...
}
Here's the reference: http://php.net/manual/en/control-structures.elseif.php

Answer 2

Part of your problem seems to be poor formatting. If you lined up your open and close tags for your if statements I think you would be able to see this better. Having said that, you can add any elseif/if clauses for the category if where I marked below:
<!--Blog Post End-->
<?php
} // closes while loop
} else{ } // closes healthcare if, add extra else here
} // closes POST if
else
{