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188 Chapter 5 Basic Web Application Strategies Listing 5.2 Continued { $body .= fgets($fp, 64); } fclose($fp); // Mail the message to all specified recipients for($i=2; $i chmod +x script.php tobias@dev:/home/tobias/ > ./script.php On Windows, you can associate the file extension .php with the interpreter to achieve the same result. The script shows two important concepts often needed in command-line scripts: accessing arguments passed to the script and reading from standard input. PHP automatically sets up an array named $argv that contains the script s filename as first entry and as subsequent entries all arguments to the script.This is actually the same behavior as in C. Just as in C, there s another variable, $argc, containing the number of arguments. Of course, you can also use count($argv). For example, if you call a PHP script with php script.php3 foo, $argv[1] would contain the first argument, foo. The other noteworthy part of the code is reading from standard input. PHP 4.0 allows you to use so-called PHP streams with fopen().To accept user input on the command line or read in data passed from another program, php://stdin is used.The script uses it to read the log message provided by CVS; you could also prompt for user input with a similar function. Listing 5.3 shows it in action.

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