Can't run Script by Cmd-->exec

[Anon]

I can't run Shell Script by Command exec...system...
.I use command exec to run linux shell script
to run cobol program and I want to PHP run this scipt if I run this script in Linux Prompt ...I can..
but If I run from command exec(..shellscript)
I can not...Can help me
example for script
!/bin/ksh

export RUNCOBOLPATH=/usr/bin
export TEXTPATH=/feedmill_mis/programs/ksh
export DATAPATH=/feedmill_mis/data
export ROOTPATH=/feedmill_mis
export PATH=$PATH:$RUNCOBOLPATH:$ROOTPATH:/feedmill_mis/programs/ksh
export RUNPATH=$RUNCOBOLPATH:$RUNPATH:$ROOTPATH:/feedmill_mis/programs/load:$DATAPATH:$TEXTPATH

export PATH=$PATH:$RUNCOBOLPATH:$PATHX
export RUNPATH=$RUNCOBOLPATH:$RUNPATH:$RUNPATHX:$DATAPATH:$TEXTPATH

export USER1="LAB"
export USER2="LAB"
DATEPHP=cat $TEXTPATH/date.txt
export DATEPHP

COGDF=FA"$USER1".01
LBAAIF=LB"$USER2".06
LBANIF=LB"$USER2".07
LBPWDF=LB"$USER2".90
WKTXTF=LBCOUNT.TXT
OUTDATE=OUTDATE.TXT

export COGDF LBAAIF LBANIF LBPWDF WKTXTF OUTDATE DATEPHP

runcobol LBG810 -a=$DATEPHP k

unset COGDF LBAAIF LBANIF LBPWDF WKTXTF OUTDATE DATEPHP

exit 0

[Anon]

It would be silly of me to ask if you get any kind of error message wouldn't it?

[Anon]

that is a silly question :-)
im guessing its a permissions issue, make sure php is able to run your script.