php function code not working

<?php
mysql_connect('localhost','ajay_wp','youmint');
mysql_select_db('ajay_wp');

	class Addcoupons {

		function Addcoupons(){
		
			function get_cat_ID($catname=''){

			$catsql="SELECT * FROM `wp_terms` where `name`='".addslashes($catname)."'";
			$allcategory=mysql_query($catsql);
			$allcategories=mysql_fetch_array($allcategory);
			$cateid=$allcategories['term_id'];

		if(!empty($cateid)){
			return $cateid;
			}
				else
			{
			$cateid=0;
			return $cateid;
			}

			
		}
              function get_store_ID( $storename ) {
	        $store = get_term_by( 'name', $storename, 'store' );
	        if ( $store ){
                return $store->term_id;
			}else
	{
	        return 0;
	}
	}                

		function wp_insert_category($catname='')
		{
		$slag=str_replace("'","",htmlentities($catname));
		$slag=strtolower(str_replace(",","",$slag));
		$slag=strtolower(str_replace(" ","_",$slag));
		$catname=addslashes(ucwords($catname));
		
		if(!empty($catname)){
		$term_insert=mysql_query("insert into `wp_terms` set `name`='$catname',`slug`='$slag',`term_group`=0");
		$catid= mysql_insert_id();
		$term_taxonomy=mysql_query("insert into `wp_term_taxonomy` set `term_id`='$catid',`taxonomy`='category',`description`='$catname',`parent`=0,`count`=1");
		$taxonomyid= mysql_insert_id();
		return $taxonomyid;
		}
		}

		function wp_insert_store($storename='',$description='')
		{
			$slag=str_replace("'","",htmlentities($storename));
			$slag=strtolower(str_replace(" ","_",$slag));
	                $slag=strtolower(str_replace(".","_",$slag));
			$storename=addslashes(ucwords($storename));
			//$slag=$slag.".com";
			if(!empty($storename)){
				$term_insert=mysql_query("insert into `wp_terms` set `name`='$storename',`slug`='$slag',`term_group`=0");
				$storeid= mysql_insert_id();
				$term_taxonomy=mysql_query("insert into `wp_term_taxonomy` set `term_id`='$storeid',`taxonomy`='store',`description`='$description',`parent`=0,`count`=1");
				$taxonomyid= mysql_insert_id();
				return $taxonomyid;
			}
		}
		
		function remove_specila_char($catname)
		{
			$slag=str_replace("'","",$catname);
		$slag=str_replace(" ","_",$catname);
		return $slag;
		}

		}
		

		  function TaxonomyIdArray($categories='')
		{
			
			$categoryArray=array_filter(explode("-",$categories));
			$categoryIdArray=array();
			foreach($categoryArray as $catname)
			{
				$catname=trim(stripslashes($catname));
				$my_cat_id1 = get_cat_ID($catname); 
			if($my_cat_id1==0){
					$categoryId=wp_insert_category($catname);
					array_push($categoryIdArray,$categoryId);
					}
					else
						{
					$categoryId=$my_cat_id1;
					$taxodetails=mysql_fetch_array(mysql_query("SELECT * FROM `wp_term_taxonomy`
WHERE `term_id` =$categoryId"));
					$taxonomyid=$taxodetails['term_taxonomy_id'];
					mysql_query("update `wp_term_taxonomy` set `count`=`count`+1 where `term_taxonomy_id`=$taxonomyid");
					array_push($categoryIdArray,$taxonomyid);
						}
			}
			
			return $categoryIdArray;
		}

		  function TaxonomyIdStoreArray($stores='',$description='')
		{
			
			//$storeArray=array_filter(explode("-",$stores));
			$storeIdArray=array();
			//foreach($storeArray as $storename)
			//{
				$storename=trim(stripslashes($stores));
				$my_store_id1 = get_cat_ID($storename); 
			if($my_store_id1==0){
					$storeId=wp_insert_store($storename,$description);
					array_push($storeIdArray,$storeId);
					}
					else
						{
					$storeId=$my_store_id1;
					$taxodetails=mysql_fetch_array(mysql_query("SELECT * FROM `wp_term_taxonomy`
WHERE `term_id` =$storeId"));
					$taxonomyid=$taxodetails['term_taxonomy_id'];
					mysql_query("update `wp_term_taxonomy` set `count`=`count`+1, `description`='$description'  where `term_taxonomy_id`=$taxonomyid");
					array_push($storeIdArray,$taxonomyid);
						}
			//}
			
			return $storeIdArray;
		}
	       
function InsertCoupons($category='',$store='',$offerid='',$title='',$offertype='',$description='',$merchanturl='',$imagesrc='',$code='',$startdate='',$enddate='')	
		{

		$allmetakey=mysql_query("SELECT * FROM `wp_postmeta` WHERE `meta_key` = 'ID' AND `meta_value` = '$offerid'");
			 
			if(mysql_num_rows($allmetakey)==0)
			{
				$postName=str_replace("'","",htmlentities($title));
				$postName=str_replace(".","",htmlentities($postName));
				$postName=str_replace(",","",htmlentities($postName));
				$postName=str_replace("%","",htmlentities($postName));
				$postName=strtolower(str_replace(" ","_",htmlentities($postName)));

  
  mysql_query("insert into `wp_posts` set `post_title`='{$title}', `post_content`='{$description}',`post_excerpt`='{$title}',`post_author`=1,`post_status`='publish',`post_date`=now(),`post_date_gmt`=now(),`post_type`='post',`post_name`='{$postName}'");
   		$id=mysql_insert_id();
		$Url=$merchanturl;
		$Image=$imagesrc;
		$Code=$code;
		foreach(array_filter($category) as $texonomyid)
			{
				mysql_query("insert into `wp_term_relationships` set `object_id`=$id,`term_taxonomy_id`=$texonomyid,`term_order`=0");
			}

			foreach(array_filter($store) as $texonomystoreid)
			{
				mysql_query("insert into `wp_term_relationships` set `object_id`=$id,`term_taxonomy_id`=$texonomystoreid,`term_order`=0");
			}

	  mysql_query("INSERT INTO wp_postmeta (post_id,meta_key,meta_value) VALUES ('{$id}','ID','{$offerid}')");

	  mysql_query("INSERT INTO wp_postmeta (post_id,meta_key,meta_value) VALUES ('{$id}','image','{$Image}')");

	  mysql_query("INSERT INTO wp_postmeta (post_id,meta_key,meta_value) VALUES ('{$id}','type','{$offertype}')");

	  mysql_query("INSERT INTO wp_postmeta (post_id,meta_key,meta_value) VALUES ('{$id}','url','{$Url}')");

	  mysql_query("INSERT INTO wp_postmeta (post_id,meta_key,meta_value) VALUES ('{$id}','code','{$Code}')");
	   mysql_query("INSERT INTO wp_postmeta (post_id,meta_key,meta_value) VALUES ('{$id}','starts','{$startdate}')");
	   mysql_query("INSERT INTO wp_postmeta (post_id,meta_key,meta_value) VALUES ('{$id}','expires','{$enddate}')");
	    mysql_query("INSERT INTO wp_postmeta (post_id,meta_key,meta_value) VALUES ('{$id}','featured','no')");

		return $id;
		
	   
	}
		}

		 function UpdateCoupons($category='',$store='',$offerid='',$title='',$offertype='',$description='',$merchanturl='',$imagesrc='',$code='',$startdate='',$enddate='')	
		{
		$allmetakey=mysql_fetch_array(mysql_query("SELECT `post_id` FROM `wp_postmeta` WHERE `meta_key` = 'ID' AND `meta_value` = '$offerid'"));
		$Postid=$allmetakey['post_id'];
		if($Postid!=0){
			mysql_query("update `wp_postmeta` set `meta_value` ='$imagesrc', WHERE `post_id` = '$Postid' and `meta_key` = 'image'");
			mysql_query("update `wp_postmeta` set `meta_value` ='$offertype', WHERE `post_id` = '$Postid' and `meta_key` = 'type'");
			mysql_query("update `wp_postmeta` set `meta_value` ='$merchanturl', WHERE `post_id` = '$Postid' and `meta_key` = 'url'");
			mysql_query("update `wp_postmeta` set `meta_value` ='$code', WHERE `post_id` = '$Postid' and `meta_key` = 'code'");
			mysql_query("update `wp_postmeta` set `meta_value` ='$startdate', WHERE `post_id` = '$Postid' and `meta_key` = 'starts'");
			mysql_query("update `wp_postmeta` set `meta_value` ='$enddate', WHERE `post_id` = '$Postid' and `meta_key` = 'expires'");
			return $Postid;
		}
		}
		
	}

?>