for i in `seq 1 100`; do php5 -n -e test.php; if [ $? != 0 ]; then echo; echo Crashed on run $i; echo ; break; fi; done

for CORE in `ls core.* | sed -e 's/core.//g'`; do echo $CORE; gdb -batch -ex 'thread apply all info registers' -ex 'thread apply all backtrace full' php5 core.$CORE > gdb.$CORE; done