How can I make a cron to execute a php script?

问题

I want execute a php script each five minutes at my server, it is a php script which works fine alone, I tried since my browser and since console using "php -f php_file.php". But I need execute it automatically every days. I was searching on Google and here to make it but any solution worked for me:

First I edit my crontab and I also restart the cron to make sure that it was updated correctly.

*/5 * * * * /usr/bin/php /var/www/myscript.php

and I tried the following too:

*/5 * * * * /usr/bin/php -f /var/www/myscript.php

I made the script executable too, review my system log (where I can see that my cron is executing correctly, but it doesn't execute php script) and I also try to redirect the output of cron to a file, but it leaves the file empty. Anyone can help me?

Best regards

回答1:

You were on the right track by making your script executable.

Do it again if needed

$ chmod +x script.php

Add this to the very top of the file:

#!/usr/bin/php
<?php
// here goes your script

you can test if the script executes by running it like this

$ ./script.php

set-up your cron job like below to set-up some logging but make sure you output something from your script, use print or echo and a relevant message.

*/5 * * * * /var/www/script.php >> /var/www/script.log 2>&1

we are redirecting both standard output and errors into the script.log file.

check every 5 min for activity.

Update:

Try this in your php script

$file = '/var/www/script.txt';
for($i=0;$i<9;$i++){
    $entry = date("Y-m-d H:i:s") . " " . $i . PHP_EOL;
    echo $entry; // this should write to the log file

    file_put_contents($file, $entry, FILE_APPEND | LOCK_EX); 
    // and this should write to the script.txt file
}

basically we are giving the full path to the file and passing the FILE_APPEND flag so we don't overwrite every time.

Run the script and check if the file is created, the default behavior is to create the file if it doesn't exist.

来源：https://stackoverflow.com/questions/33099274/how-can-i-make-a-cron-to-execute-a-php-script

标签

php

cron

crontab