Applescript -10810 Error

I have to run an applescrip开发者_如何学Pythont that convert images with "image events" and I have to run the script with PHP.

If I run the script with command line in terminal or from AppleScript editor, all works correctly, but if I try to run the script with shell_exec or exec PHP command -10810 error happens.

This is the code. The Error happens at the "open" command of "Image Events" but also happens at first command of every application.

on run {myFoto, myThumb}
try
set myTmpWidth to 1772
set myFoto to "Macintosh HD:Library:WebServer:Documents:imgProdotti:alta:" & myFoto     
    set myThumb to "Macintosh HD:Library:WebServer:Documents:imgProdotti:alta:" & myThumb
    set myWidth to myTmpWidth * 1

    tell application "Image Events"

        set myImage to open myFoto
        tell myImage
            scale to size myTmpWidth
            save as JPEG in myThumb
            close
        end tel 
    end tell

on error error_message
    return error_message
end try 
end run

Someone can help me?

set myImage to open myFoto
                       ^
                       |

You're basically trying to open a string, which you can't do. When you initiliaze myFoto, coerce it into an alias reference like so:

set myFoto to "Macintosh HD:Library:WebServer:Documents:imgProdotti:alta:" & myFoto as alias

Do the same thing for the myThumb variable; you will get an error otherwise.

Also (this might just be a typo) there is a compilation error at line 15: end tel