jinxu@jinxu-ubuntu:~$ php -h
Usage: php [options] [-f] <file> [--] [args...]
   php [options] -r <code> [--] [args...]
   php [options] [-B <begin_code>] -R <code> [-E <end_code>] [--] [args...]
   php [options] [-B <begin_code>] -F <file> [-E <end_code>] [--] [args...]
   php [options] -S <addr>:<port> [-t docroot] [router]
   php [options] -- [args...]
   php [options] -a
  -a               Run interactively  -c <path>|<file> Look for php.ini file in this directory  -n               No configuration (ini) files will be used  -d foo[=bar]     Define INI entry foo with value &#39;bar&#39;  -e               Generate extended information for debugger/profiler  -f <file>        Parse and execute <file>.  -h               This help  -i               PHP information  -l               Syntax check only (lint)  -m               Show compiled in modules  -r <code>        Run PHP <code> without using script tags <?..?>  -B <begin_code>  Run PHP <begin_code> before processing input lines  -R <code>        Run PHP <code> for every input line  -F <file>        Parse and execute <file> for every input line  -E <end_code>    Run PHP <end_code> after processing all input lines  -H               Hide any passed arguments from external tools.  -S <addr>:<port> Run with built-in web server.  -t <docroot>     Specify document root <docroot> for built-in web server.  -s               Output HTML syntax highlighted source.  -v               Version number  -w               Output source with stripped comments and whitespace.  -z <file>        Load Zend extension <file>.
  args...          Arguments passed to script. Use -- args when first argument
                   starts with - or script is read from stdin
  --ini            Show configuration file names
  --rf <name>      Show information about function <name>.  --rc <name>      Show information about class <name>.  --re <name>      Show information about extension <name>.  --rz <name>      Show information about Zend extension <name>.  --ri <name>      Show configuration for extension <name>.

jinxu@jinxu-ubuntu:~$ php -h
Usage: php [options] [-f] <file> [--] [args...]
   php [options] -r <code> [--] [args...]
   php [options] [-B <begin_code>] -R <code> [-E <end_code>] [--] [args...]
   php [options] [-B <begin_code>] -F <file> [-E <end_code>] [--] [args...]
   php [options] -S <addr>:<port> [-t docroot] [router]
   php [options] -- [args...]
   php [options] -a
  -a               Run interactively  -c <path>|<file> Look for php.ini file in this directory  -n               No configuration (ini) files will be used  -d foo[=bar]     Define INI entry foo with value &#39;bar&#39;  -e               Generate extended information for debugger/profiler  -f <file>        Parse and execute <file>.  -h               This help  -i               PHP information  -l               Syntax check only (lint)  -m               Show compiled in modules  -r <code>        Run PHP <code> without using script tags <?..?>  -B <begin_code>  Run PHP <begin_code> before processing input lines  -R <code>        Run PHP <code> for every input line  -F <file>        Parse and execute <file> for every input line  -E <end_code>    Run PHP <end_code> after processing all input lines  -H               Hide any passed arguments from external tools.  -S <addr>:<port> Run with built-in web server.  -t <docroot>     Specify document root <docroot> for built-in web server.  -s               Output HTML syntax highlighted source.  -v               Version number  -w               Output source with stripped comments and whitespace.  -z <file>        Load Zend extension <file>.
  args...          Arguments passed to script. Use -- args when first argument
                   starts with - or script is read from stdin
  --ini            Show configuration file names
  --rf <name>      Show information about function <name>.  --rc <name>      Show information about class <name>.  --re <name>      Show information about extension <name>.  --rz <name>      Show information about Zend extension <name>.  --ri <name>      Show configuration for extension <name>.