Executing Shell Script from PHP. Apache log Syntax Error: ")" unexpected - php

Question

I can't find the error, the scripts runs fine from console, I thought it was PHP thing but couldn't fine anything.
Maybe permissions things? Exec things? I really don't know much, hope someone can help me. Thanks!
BASH Script (SIMPLY SENDS A JOB TO A PRINTER, but I put it enterely just in case):
#!/bin/bash
PBOX_DIR_TMP="/tmp"
DESDE=$1
HASTA=$2
FORMULARIO=$3
COLA=$4
FECHA=$(date +%F)
SPOOL="/spool.$$.txt"
ARCHIVOSALIDA="${PBOX_DIR_TMP}"/salida.$$.txt
RETURNCODE=0
echo "$DESDE"
echo "$HASTA"
echo "#PBSSFORM ${FORMULARIO}" > "${SPOOL}"
for ((i = ${DESDE};i <= ${HASTA};i++))
do
if [ $i > ${DESDE} ]
then
echo -e "\f${FECHA}" >> "${SPOOL}"
echo "${i}" >> "${SPOOL}"
else
echo "${FECHA}" >> "${SPOOL}"
echo "${i}" >> "${SPOOL}"
fi
done
cat "${SPOOL}" | pboxsvc ${PBOX_DIR_BIN}/pboxlib.bin AplicarHostForm > "${ARCHIVOSALIDA}"
lp -d "${COLA}" "${ARCHIVOSALIDA}"
RETURNCODE=$?
rm "${ARCHIVOSALIDA}"
rm "${SPOOL}"
if [ ${RETURNCODE} -eq 0 ]
then
exit 1
else
exit 0
fi
PHP call:
$cmd = "/printb/imprimirFormPlano.bin 1 2 FILE.PS Cola1";
Apache Log:
/printb/imprimirFormPlano.bin 1: Syntax error: ")" unexpected
sh: 2: not found.
The scripts works if I call it from shell like this: ./printb/imprimirFormPlano.bin 1 2 FILE.PS Cola1

Answer 1

It looks like your apache's default shell is sh rather than bash. Try changing your command to
$cmd = '/bin/bash /printb/imprimirFormPlano.bin 1 2 FILE.PS Cola1';