Всем привет, мой первый вопрос.
С замечательной книги "Изучаем PHP 7" Дэвида Скляра выписал код, но в браузере выдает ошибку.
Строка 15, дальше может быть и больше, не проверял. Спасибо за помощь.
class FormHelper {
protected $values = array ();
public function __construct ($values = array()) {
if ($_SERVER ['REQUEST_METHOD'] == 'POST') {
$this -> values = $_POST;
} else {
$this -> values = $values;
}
}
public function input ($type, $attributes = array (), $isMultiple = false)
{
$attributes['type'] = $type;
if (($type == 'radio' || ($type = 'checkbox'))
{
if
($this -> isOptionSelected ($attributes['name']
?? null, $attributes['value'] ?? null))
{
$attributes ['checked'] = true;
}
}
return $this -> tag ('input', $attributes, $isMultiple);
}
public function select ($options, $attributes = array ()) {
$multiple = $attributes ['multiple'] ?? false;
return
$this -> start ('select', $attributes, $multiple) .
$this -> options ($attributes['name'] ?? null, $options) .
$this -> end ('select');
}
public function tag ($tag, $attributes = array (), $isMultiple = false) {
return "<$tag {$this -> attributes ($attributes, $isMultiple)} />";
}
public function start ($tag, $attributes = array (), $isMultiple = false) {
$valueAttribute = (! (($tag == 'select') || ($tag == 'textarea')));
$attrs = $this -> attributes ($attributes, $isMultiple, $valueAttribute);
return "<$tag $attrs>";
}
public function end ($tag) {
return "</$tag>";
}
protected function attributes ($attributes, $isMultiple, $valueAttribute = true) {
$tmp = array ();
if ($valueAttribute && isset($attributes['name']) && array_key_exists($attributes['name'], $this -> values)) {
$attributes ['value'] = $this -> values [$attributes['name']];
}
foreach ($attributes as $k => $v) {
if ($is_bool($v)) {
if ($v) {$tmp [] = $this -> encode ($k);}
}
else {
$values = $this -> encode ($v);
if ($isMultiple && ($k == 'name')) {
$value .= '[]';
}
$tmp [] = "$k=\"value\"";
}
}
return implode ('', $tmp);
}
protected function options ($name, $options) {
$tmp = array ();
foreach ($options as $k => $v) {
$s = "<options value\"{$this -> encode ($k)}\"";
if ($this -> isOptionSelected ($name, $k)) {
$s .= ' selected';
}
$s .= ">{$this -> encode ($v)}</option>";
$tmp [] = $s;
}
return implode ('', $tmp);
}
protected function isOptionSelected ($name, $value) {
if (! isset ($this -> values ['name'])) {
return false;
}
elseif (is_array($this -> values['name'])) {
return in_array($value, $this -> values [$name]);
}
else {
return $value == $this -> values [$name];
}
}
public function encode ($s) {
return htmlentities($s);
}
}
Средний