gistfile1.php

<?php
print "Please enter a number: ";
$stdin = fopen ("php://stdin","r");
$input = trim(fgets($stdin));
if(is_numeric($input)){
    $output = "*";
    for($i = 0; $i < $input; $i++){
        print $output."\n";
        $output .= "*";
    }
}
else{
    print "Unrecognized.\n";
}
die();
?>