For help PHP failed to execute system command

Function: Convert picture format via external program (not available in several ways, through shell can be successful, but returned by PHP 1, the explanation is wrong)

EXEC ("C:/Program files/irfanview/i_view32.exe c:/program Files/irfanview/03280009.sff/convert=c:/program Files/ Irfanview/4.tif ", $result, $status); Echo $status;

EXEC ("C://program files//irfanview//i_view32.exe c://program Files//irfanview//03280009.sff/convert=c://program Files//irfanview//4.tif ", $result, $status); Echo $status;

EXEC ("C:\Program files\irfanview\i_view32.exe c:\Program files\irfanview\03280009.sff/convert=c:\program Files\ Irfanview\4.tif ", $result, $status); Echo $status;

EXEC ("C:\\Program Files\\irfanview\\i_view32.exe C:\\Program Files\\irfanview\\03280009.sff/convert=c:\\program Files\\irfanview\\4.tif ", $result, $status); Echo $status;

PS: Safe mode is not turned on

Reply to discussion (solution)

Do you have this i_view32.exe in the system running in the interface?

Do you have this i_view32.exe in the system running in the interface?
Run directly with the interface, to the format of the word is only the command call should not appear interface.

Ps:irfanview is a powerful free view software, before the Java version of the program can be executed, to PHP is not.

Just the command call should not appear interface???
It can't be!
You execute it in the Command window and post the command if you have no problem.

Expression error, hehe, OK no interface, no pop-up window:
C:\Program Files\irfanview>i_view32.exe C:\Program Files\irfanview\03280009.sff/convert=c:\program Files\ Irfanview\4.tif

Giving C:\Program Files\irfanview>i_view32.exe the right to execute the general user

"C:/Program Files/irfanview/i_view32.exe

You write the red part as a parameter (equivalent to a bad DOS command), the path has a space to use the quotation marks

Giving C:\Program Files\irfanview>i_view32.exe the right to execute the general user
I have seen this suggestion before, but right-click Properties do not see this authorization, how to operate it?

"C:/Program Files/irfanview/i_view32.exe

You write the red part as a parameter (equivalent to a bad DOS command), the path has a space to use the quotation marks
There are spaces, but I have to adjust the path after the execution of the time has been waiting, it seems that the card is dead, is not to authorize AH.

It worked:
1, the path can not take a space, such as with a space to special treatment;
2, correct wording: exec ("C:\\irfanview\\i_view32.exe c:\\irfanview\\03280009.sff/convert=c:\\irfanview\\4.tif", $result, $ status);

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