It’s really quick tip:
Sometimes you need to make a shell script which need to be executed either on regular basis, or like infinite loop.
You always can run it by:
/usr/bin/php /path/to/script.php
but if you add a shebang line, the script can be run as standalone application.
Example:
#!/usr/bin/php -q
<?php
//Your php code goes there
?>
<?php
//Your php code goes there
?>
Then you can run it like:
/path/to/script.php
Hope this helps