Add -q argument like
php -q script.php param1 param2 param3
to suppress header information.
Running php -h
will show you all arguments that it takes.
Usage: php [-q] [-h] [-s [-v] [-i] [-f <file>] | {<file> [args...]}
-q Quiet-mode. Suppress HTTP Header output.
-s Display colour syntax highlighted source.
-f <file> Parse <file>. Implies '-q'
-v Version number
-C Do not chdir to the script directory
-c <path> Look for php.ini file in this directory
-a Run interactively
-d foo[=bar] Define INI entry foo with value 'bar'
-e Generate extended information for debugger/profiler
-z <file> Load Zend extension <file>.
-l Syntax check only (lint)
-m Show compiled in modules
-i PHP information
-h This help