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Using popen() and pclose()

<?php      $command = "/usr/bin/dialog --inputbox 'What is your Name' 0 0 2>/tmp/php_temp";      $pr = popen($command, 'w');      $exit_code = pclose($pr);          switch($exit_code) {           case 0:                $input = implode("", file("/tmp/php_temp"));                echo "\nYou typed: $input\n";                break;           case 1:                echo "\nWhy did you cancel?\n";                break;      } ?>