void handle_player_world_collision(Player* player,TileMap* map)
{
	int topleft_xtile=map->xworld_to_map(player->pos.x);
	int topleft_ytile=map->yworld_to_map(player->pos.y);
	int bottright_xtile=map->xworld_to_map(player->pos.x+player->aabb.w);
	int bottright_ytile=map->yworld_to_map(player->pos.y+player->aabb.h);

	//we loop through all the tiles that the player's aabb touch
	for(int i=topleft_xtile;i<bottright_xtile;i++)
	{
		for(int j=topleft_ytile;j<bottright_ytile;j++)
		{
			//here we test for map coordinates (i,j) validity...
			//...
			///////
			if(map->getTile(i,j)->is(Tile::SOLID))
			{
				if(player->vel.x<=0 && player->vel.y<=0)
				{//we are trying to move left_top;calculate the overlap according to each axis
					//and resolve collision where the overlap is minimal
					float xoverlap=(i+1)*map->tile_width-player->pos.x;
					float yoverlap=(j+1)*map->tile_height-player->pos.y;
					if(xoverlap<yoverlap)
					{
						player->pos.x=(i+1)*map->tile_width;
						player->vel.x=0;
					}
					else
					{
						player->pos.y=(j+1)*map->tile_height;
						player->vel.y=0;
					}
				}
				//here you the same as above
				//detect what's the movement direction that led o this 
                                //collision.
				//resolve collision by changing the player position to 
                                //be adjacent to the tile in the direction where the 
                                //overlap was minimal!
			}
		}
	}
}

Hi,

The AABB is represented using the UL corner (the player pos) and the (width and height of the aabb)..I know this have to change so the aabb could be centred on the player in order to have some fair gameplay!