php.exe出现问题

Question

I am issuing command line php to run a php script but suddenly there is nothing output after I try

php function.php parameters

Nothing is displayed.

What is going on ?

C:>php function.php 111 [Enter]
C:>

<?php
   function main($argc, $argv)
   {
      if($argc!=2) 
      {
        echo "wrong parameters";
        return;
      }
      //do it 
    }
?>

I try php function.php it doesn't print the echo statement,

Answer 1

Your script is just defining a function named main . PHP does not have a function that it automatically executes; it just starts executing the script . Either get rid of the function definition or call main yourself. For example:

<?php
if($argc == 3) {
    echo $argv[1] + $argv[2], "\n";
}else{
    echo "Two parameters are required.\n";
}