PHP: proc_close

Description

int proc_close ( resource process )

proc_close() is similar to pclose() except that it only works on processes opened by proc_open(). proc_close() waits for the process to terminate, and returns its exit code. If you have open pipes to that process, you should fclose() them prior to calling this function in order to avoid a deadlock - the child process may not be able to exit while the pipes are open.

Parameters

process: The proc_open() resource that will be closed.

User Contributed Notes
proc_close

sergey1369 at narod dot ru
29-Aug-2003 05:16


Under PHP/4.3.3RC2, in case of two processes 

these function may hangs. Work around is not use 

proc_close, or put it after all fcloses done. 



For example, this code hangs.



$ph1 = proc_open("cat",

 array(0=>array("pipe","r"),1=>array("pipe","w")),

 $pipes1);

$ph2 = proc_open("cat",

 array(0=>array("pipe","r"),1=>array("pipe","w")),

 $pipes2);



fclose($pipes1[0]); fclose($pipes1[1]); proc_close($ph1);

fclose($pipes2[0]); fclose($pipes2[1]); proc_close($ph2);



This code worked for me:



$ph1 = proc_open("cat",

 array(0=>array("pipe","r"),1=>array("pipe","w")),

 $pipes1);

$ph2 = proc_open("cat",

 array(0=>array("pipe","r"),1=>array("pipe","w")),

 $pipes2);



fclose($pipes1[0]); fclose($pipes1[1]); 

fclose($pipes2[0]); fclose($pipes2[1]); 

proc_close($ph1); proc_close($ph2);