Please enter a whole number ... <br />
<b>Notice</b>:  Use of undefined constant STDIN - assumed 'STDIN' in <b>/var/www/taskplatform/bower_components/ace-builds/demo/kitchen-sink/docs/php.php</b> on line <b>13</b><br />
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<b>Warning</b>:  fgets() expects parameter 1 to be resource, string given in <b>/var/www/taskplatform/bower_components/ace-builds/demo/kitchen-sink/docs/php.php</b> on line <b>13</b><br />


Factorial  = 1