/** * Create random value on give criteria * * @param int $length * @param string $type (mixed, chars, digits) * @return string */ function generateRandomString($length, $type = null) { if ($length === null) { $length = 12; } if ($type === null) { $type = 'mixed'; } if ($type != 'mixed' && $type != 'chars' && $type != 'digits') { return false; } $rand_value = ''; while (strlen($rand_value) < $length) { if ($type == 'digits') { $char = myRand(0, 9); } else { $char = chr(myRand(0, 255)); } if ($type == 'mixed') { if (preg_match('/^[a-z0-9]$/i', $char)) { $rand_value .= $char; } } elseif ($type == 'chars') { if (preg_match('/^[a-z]$/i', $char)) { $rand_value .= $char; } } elseif ($type == 'digits') { if (preg_match('^[0-9]$', $char)) { $rand_value .= $char; } } } return $rand_value; }
function a_star_test() { $map = myArrayFill(0, NODE_HEIGHT, myStrRepeat('A', NODE_WIDTH)); generate(node(myRand(1, (NODE_WIDTH + NODE_WIDTH % 2) / 2 - 1) * 2 - 1, myRand(1, (NODE_HEIGHT + NODE_HEIGHT % 2) / 2 - 1) * 2 - 1), $map); $start = node(1, 1); $target = node(NODE_WIDTH + NODE_WIDTH % 2 - 3, NODE_HEIGHT + NODE_HEIGHT % 2 - 3); $path = a_star($start, $target, $map); myArrayUnshift($path, $start); foreach ($path as $i) { $arr = coord($i); $map[$arr[0]][$arr[1]] = '*'; } return null; }