在php上执行命令exec的问题

Question

I've an issue while using exec on php, maybe I didn't understand how it works.

The problem is: I wanna execute a binary file named 'test.exe'. That program takes data from an input file 'input.xml' and create an new file 'output.xml' with some modification on those data.

The below command line works perfectly on windows cmd :

>cd C:\Test
>test.exe C:\XML\example.xml C:\XML\example.out.xml

But a php script like this :

exec('C://Test//test.exe C://XML//example.xml C://XML//example.out.xml');

Doesn't work like suspected;

Each time I get beside the empty generated file example.out.xml another file named gmon.out.

I don't know what kind of file it is. Is it possible that this file will be the source of my problem?

Any idea?

Answer 1

You're using the wrong slash, you should be using a double backslash (one to be printed, and another to escape it). Using // will be literally translated to // so PHP will try to find C://Test//test.exe and fail.

The corrected syntax would be either

exec('C:\\Test\\test.exe C:\\XML\\example.xml C:\\XML\\example.out.xml');

or

exec('C:/Test/test.exe C:/XML/example.xml C:/XML/example.out.xml');