[MS4W-Users] Get data values from shapeObj MapScript

[igis at interactivegis.com]

Hi Kenneth,

The example code we sent out earlier today actually helps with this as 
well.  The IDs are now in the layer object, so after you get the $layer 
and get a shape using the layerObj Methods (like queryBy or nextShape or 
whatever from 
https://www.mapserver.org/mapscript/mapscript.html#layerobj-methods) you 
can use $layer->numitems there to see how many attribute fields the 
shapes have and loop over that using $layer->getItem($x) to get the 
names of those attribute fields.

This should let you create an array using $layer->getItem() (which I 
called $layer_headers in my sample code) which has the same numeric 
indexes as your $shape->getValue, but the $layer->getItem() values are 
the field names, so you can use a line like this to target an attribute 
directly once you've created the $layer_headers array:

$shape->getValue(array_search('Gis_ID', $layer_headers));

Depending on your needs you could loop through all of $layer->getItem() 
and all of $shape->getValue() and create an array that matches them up 
since the numerical indexes would always be a match, which is more of 
what the sample code from earlier at http://bit.ly/2OxnDih does.

Hope that helps!


------ Original Message ------
Hi there,


In previous versions of MapServer and MapScript (
https://mapserver.org/mapscript/php/index-5.6.html#shapeobj), i could query
a shapeObj after its values. And get a key => value array with all the data
fields.


Example:

public function __construct(\shapeObj $shape)

{

     foreach ($shape->values as $key => $value) {

         //Do something;

     }

}


In the new Mapserver and MapScript, there is no $shape->values attribute.


I can get the value of element X but not the key name (Example "Gis_ID") by
using this function:


$shape->getValue(3);


But this does not help my much. My map sources are dynamic and i need to
target the data by IDs, and not a random array index.


Can anyone help me figure this out? :)

Hilsen
Kenneth Hauklien
kenneth at micado.no
https://www.micado.no
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