php5 code on crontab failed

Hi All,
I have a php5 script that runs well by manually. It connects a sybase db, makes same calculations and insert them in a sybase table. But, when I try to work it in crontab, I always getting this error;

"/usr/bin/php: error while loading shared libraries: libsybunic.so: cannot open shared object file: No such file or directory"

I've tried to put environment variables in the beginning of php code but didn't work.
Any idea?


Beginning of code is like this;

#!/usr/bin/php5 --
<?
        putenv ("SYBASE=/home/sybase");
        putenv ("SYBASE_OCS=OCS-15_0");
        putenv ("SYBASE_ASE=ASE-15_0");
        putenv ("SYBASE_SYSAM=SYSAM-2_0");
        putenv ("PATH=$SYBASE/bin:$SYBASE/$SYBASE_ASE/bin:$SYBASE/$SYBASE_OCS/bin:$SYBASE/$SYBASE_SYSAM/bin:$PATH");
        putenv ("LD_LIBRARY_PATH=$SYBASE/lib:$SYBASE/$SYBASE_ASE/lib:$SYBASE/$SYBASE_OCS/lib:$LD_LIBRARY_PATH");
     

        global $conn;
         $conn = sybase_connect('EBIMFS', 'radiousr', 'xxx');
........