php dynamically generate coords for image map
I have a map with a grid on it. each cell of the grid will be a clickable area on the map via image map coords. I would like to do this dynamically to save writing all this code for the image maps, but I can't quite figure out the statement or equation i need to use. Here is an example of what I have of the image map so far.
<div style="text-align:center;" id="location_title">The Hearth Lands</div>
<img id="map1" src="./images/maps/regions/1.png" usemap="#map1" border="0" width="800" height="800" alt="" />
<map name="map1" id="_map1">
<area shape="rect" coords="0,0,50,50" href="" alt="" title="" />
<area shape="rect" coords="50,0,100,50" href="" alt="" title="" />
<area shape="rect" coords="100,0,150,50" href="" alt="" title="" />
<area shape="rect" coords="150,0,200,50" href="" alt="" title="" />
<area shape="rect" coords="200,0,250,50" href="" alt="" title="" />
<area shape="rect" coords="250,0,300,50" href="" alt="" title="" />
<area shape="rect" coords="300,0,350,50" href="" alt="" title="" />
<area shape="rect" coords="350,0,400,50" href="" alt="" title="" />
<area shape="rect" coords="400,0,450,50" href="" alt="" title="" />
<area shape="rect" coords="450,0,500,50" href="" alt="" title="" />
<area shape="rect" coords="500,0,550,50" href="" alt="" title="" />
<area shape="rect" coords="550,0,600,50" href="" alt="" title="" />
<area shape="rect" coords="600,0,650,50" href="" alt="" title="" />
<area shape="rect" coords="650,0,700,50" href="" alt="" title="" />
<area shape="rect" coords="700,0,750,50" href="" alt="" title="" />
<area shape="rect" coords="750,0,800,50" href="" alt="" title="" />
<area shape="rect" coords="0,50,50,100" href="" alt="" title="" />
<area shape="rect" coords="50,50,100,100" href="" alt="" title="" />
<area shape="rect" coords="100,50,150,100" href="" alt="" title="" />
<area shape="rect" coords="150,50,200,100" href="" alt="" title="" />
<area shape="rect" coords="200,50,250,100" href="" alt="" title="" />
<area shape="rect" coords="250,50,300,100" href="" alt="" title="" />
<area shape="rect" coords="300,50,350,100" href="" alt="" title="" />
<area shape="rect" coords="350,50,400,100" href="" alt="" title="" />
<area shape="rect" coords="400,50,450,100" href="" alt="" title="" />
<area shape="rect" coords="450,50,500,100" href="" alt="" title="" />
<area shape="rect" coords="500,50,550,100" href="" alt="" title="" />
<area shape="rect" coords="550,50,600,100" href="" alt="" title="" />
<area shape="rect" coords="600,50,650,100" href="" alt="" title="" />
<area shape="rect" coords="650,50,700,100" href="" alt="" title="" />
<area shape="rect" coords="700,50,750,100" href="" alt="" title="" />
<area shape="rect" coords="750,50,800,100" href="" alt="" title="" />
<area shape="rect" coords="0,100,50,150" href="" alt="" title="" />
<area shape="rect" coords="50,100,100,150" href="" alt="" title="" />
<area shape="rect" coords="100,100,150,150" href="" alt="" title="" />
<area shape="rect" coords="150,100,200,150" href="" alt="" title="" />
<area shape="rect" coords="200,100,250,150" href="" alt="" title="" />
<area shape="rect" coords="250,100,300,150" href="" alt="" title="" />
<area shape="rect" coords="300,100,350,150" href="" alt="" title="" />
<area shape="rect" coords="350,100,400,150" href="" alt="" title="" />
<area shape="rect" coords="400,100,450,150" href="" alt="" title="" />
<area shape="rect" coords="450,100,500,150" href="" alt="" title="" />
<area shape="rect" coords="500,100,550,150" href="" alt="" title="" />
<area shape="rect" coords="550,100,600,150" href="" alt="" title="" />
<area shape="rect" coords="600,100,650,150" href="" alt="" title="" />
<area shape="rect" coords="650,100,700,150" href="" alt="" title="" />
<area shape="rect" coords="700,100,750,150" href="" alt="" title="" />
<area shape="rect" coords="750,100,800,150" href="" alt="" title="" />
<area shape="rect" coords="0,150,50,200" href="" alt="" title="" />
<area shape="rect" coords="50,150,100,200" href="" alt="" title="" />
<area shape="rect" coords="100,150,150,200" href="" alt="" title="" />
<area shape="rect" coords="150,150,200,200" href="" alt="" title="" />
<area shape="rect" coords="200,150,250,200" href="" alt="" title="" />
<area shape="rect" coords="250,150,300,200" href="" alt="" title="" />
<area shape="rect" coords="300,150,350,200" href="" alt="" title="" />
<area shape="rect" coords="350,150,400,200" href="" alt="" title="" />
<area shape="rect" coords="400,150,450,200" href="" alt="" title="" />
<area shape="rect" coords="450,150,500,200" href="" alt="" title="" />
<area shape="rect" coords="500,150,550,200" href="" alt="" title="" />
<area shape="rect" coords="550,150,600,200" href="" alt="" title="" />
<area shape="rect" coords="600,150,650,200" href="" alt="" title="" />
<area shape="rect" coords="650,150,700,200" href="" alt="" title="" />
<area shape="rect" coords="700,150,750,200" href="" alt="" title="" />
<area shape="rect" coords="750,150,800,200" href="" alt="" title="" />
<area shape="rect" coords="0,200,50,250" href="" alt="" title="" />
<area shape="rect" coords="50,200,100,250" href="" alt="" title="" />
<area shape="rect" coords="100,200,150,250" href="" alt="" title="" />
<area shape="rect" coords="150,200,200,250" href="" alt="" title="" />
<area shape="rect" coords="200,200,250,250" href="" alt="" title="" />
<area shape="rect" coords="250,200,300,250" href="" alt="" title="" />
<area shape="rect" coords="300,200,350,250" href="" alt="" title="" />
<area shape="rect" coords="350,200,400,250" href="" alt="" title="" />
<area shape="rect" coords="400,200,450,250" href="" alt="" title="" />
<area shape="rect" coords="450,200,500,250" href="" alt="" title="" />
<area shape="rect" coords="500,200,550,250" href="" alt="" title="" />
<area shape="rect" coords="550,200,600,250" href="" alt="" title="" />
<area shape="rect" coords="600,200,650,250" href="" alt="" title="" />
<area shape="rect" coords="650,200,700,250" href="" alt="" title="" />
<area shape="rect" coords="700,200,750,250" href="" alt="" title="" />
<area shape="rect" coords="750,200,800,250" href="" alt="" title="" />
</map>
How can i create all of these areas with less code?
Answer
$columns = 5;
$rows = 5;
$width = 50;
$height = 50;
for( $x = 0; $x < $columns; $x++ )
{
for( $y = 0; $y < $rows; $y++ )
{
$a = ($x * $width);
$b = ($y * $height);
$coords = array( $a, $b, ($a + $width), ($b + $height) );
echo '<area shape="rect" coords="'.implode( ',', $coords ).'" href="'.$href.'" alt="'.$alt.'" title="'.$title.'" />';
}
}
You can see it in action here: http://codepad.org/MMKfY1zc