Ryan Byrd’s Tech Ramblings

1. http://www.php.net/manual/en/control-structures.alternative-syntax.php shows an alternative syntax for loops:

    foreach($list as $item)
    {
        echo $item;
    } 

can be done as:

    foreach($list as $item):
        echo $item;
    endforeach

2. if your server has short tags enabled, you can do this:

<?

$somevar="hello";

?>

<?=$somevar?>

this script checks to see if a program is running and starts it if it is not. if a certain time has passed the script will kill the running program

#!/bin/bash
 
#location of script to monitor
PROGRAM=‘myscript.php’
COUNTER=0
 
#!/bin/bash
 
date2stamp () {
    date –utc –date "$1" +%s
}
 
# convert a date into a UNIX timestamp
# time afterwhich script should not run
finishtime=$(date2stamp "Thu Nov  1 15:22:00 MDT 2007")
#echo $finishtime
 
while [ 1 ];
do
 
nowtime=`date –utc +%s`
#echo $nowtime
diffTime=$((finishtime-nowtime))
if ((diffTime > 0));
then
echo "still time to go"
else
echo "TIME UP!: checking if running:"
PROG_CHECK=`ps aux|grep $PROGRAM|wc -l`
if [ $PROG_CHECK -gt 1 ];
then
echo "running after time up"
PROG_ID=`ps uax|grep $PROGRAM |head -n 1|awk ‘{print $2}’`
#echo "KILLING"
#kill -9 $PROG_ID
else
echo "not running after time up"
fi
exit 65
fi
 
 
PROG_CHECK=`ps aux|grep $PROGRAM|wc -l`
if [ $PROG_CHECK -gt 1 ];
then
echo "running"
else
let COUNTER=COUNTER+1
echo "not running: starting: new log file: $COUNTER"
/usr/local/bin/php /root/$PROGRAM &
fi
 
#time in seconds to sleep
sleep 5
 
done