in_array always returns false? - php

Question

I want to make checked box checked once its checked for that I am pushing filter ids into the array and whichever filter id coming that should be checked In order to this I am getting all filter in $_GET['filter'] but while Am comparing this with $filter array means in_array always returns false please help me out someone
Below is HTML and PHP code,
<?php echo $header;
if(isset($_GET['filter']))
{
$selected_filter[] = explode(",",$_GET['filter']);
print_r($selected_filter);
// $flag = 1;
}
?>
<div class="wrapper">
<?php echo $column_left; ?>
<div class="filterDiv">
<h3>Filters by :</h3>
<!-- <div class="flList">
<p>price</p>
<div class="flDrop price_Module"><div class="flDropDiv">price div</div></div>
</div> -->
<!-- <div class="list-group-item flList filter_options">
<div class="flDrop price_Module"><div class="flDropDiv">price div</div></div>
<span id="amtmin"></span> - <span id="amtmax"></span>
<input type="hidden" id="amount" readonly style="border:0; color:#f6931f; font-weight:bold;">
<div id="slider-range"></div>
</div> -->
<div class="flList">
<p>Categories</p>
<div class="flDrop">
<div class="flDropDiv category_fl">
<?php foreach ($categories as $category) {
$category_name = explode("(",$category['name'])
?>
<div class="flItems"> <?php echo $category_name[0]; ?> </div>
<?php }?>
</div>
</div>
</div>
<?php //echo "<pre>"; print_r($filter_groups); die; ?>
<?php foreach ($filter_groups as $filter_group) { ?>
<div class="flList">
<p><?php echo $filter_group['name']; ?></p>
<div class="flDrop">
<div class="flDropDiv">
<?php
// $filter_string = "";
foreach ($filter_group['filter'] as $filter) {
// $filter_string = implode(',',$filter['']);
// print_r($filter_string);
if(isset($selected_filter) && in_array($filter['filter_id'],$selected_filter))
{ ?>
<input name="filter[]" type="checkbox" value="<?php echo $filter['filter_id']; ?>" checked> <?php echo $filter['name'] ?>
<?php } else {?>
<input name="filter[]" type="checkbox" value="<?php echo $filter['filter_id']; ?>"> <?php echo $filter['name'] ?>
<?php }?>
<?php }?>
</div>
</div>
</div>
<?php }?>
<div class="flList">
<?php
$amount_min = $min_product_price;$amount_max = $max_product_price;
if(isset($_GET['amtmin']) && $_GET['amtmin']!=""){
$amount_min = $_GET['amtmin'];
}
if(isset($_GET['amtmax']) && $_GET['amtmax']!=""){
$amount_max = $_GET['amtmax'];
}
?>
<p>Price</p>
<div class="flDrop price_Module">
<div class="flDropDiv">
<!-- <a class="list-group-item fltrHdng">Price</a> -->
<div class="price_slide">
<!-- <label for="amount">Price range</label> -->
<input type="hidden" id="amount" readonly style="border:0; color:#f6931f; font-weight:bold;">
<div id="slider-range"></div>
<div class="cf mb10"></div>
<span class="pull-left" id="amtmin"></span> <span class="pull-right" id="amtmax"></span>
</div>
</div>
</div>
</div>
<div class="cf"></div>
<?php
if(isset($min_p) && ($max_p)){
?>
<div class="filterSelectPrice filterSelect afr">
<div id="fSprice" class="fSbtn">Rs.<?php echo $min_p; ?> - Rs.<?php echo $max_p; ?> <span class="clear fSp"></span></div>
</div>
<?php } ?>
<div class="filterSelect" id="auto_filter_values"></div>
</div>
</div>
Below is my jQuery code:
<script type="text/javascript">
$('input[name^=\'filter\']').on('change', function() {
filter = [];
$('input[name^=\'filter\']:checked').each(function(element) {
filter.push(this.value);
$(filter).prop('checked',true);
});
// console.log(filter);return false;
window.history.pushState("","",'<?php echo $action; ?>&filter=' + filter.join(','));
//return false;
$.ajax({
url: '<?php echo $action; ?>&filter=' + filter,
type: 'post',
cache: false,
contentType: false,
processData: false,
beforeSend: function() {
$('#content').block({message:'<img src="<?php echo HTTP_SERVER; ?>image/ajax-loader.gif">'});
//$("#content").fadeOut("slow");
},
complete: function() {
// $(this).remove();
//$("#content").fadeIn("slow");
$('#content').unblock();
},
success: function(data) {
$("body").empty().append(data);
},
error: function(xhr, ajaxOptions, thrownError) {
alert(thrownError + "\r\n" + xhr.statusText + "\r\n" + xhr.responseText);
}
});
});
</script>

Answer 1

You are defining a multidimensional array when doing []:
$selected_filter[] = explode(",",$_GET['filter']);
in_array() is looking in the top level which is an array so it won't work. Just do:
$selected_filter = explode(",",$_GET['filter']);