Question

我正在尝试根据表单中的数组生成查询条件，这就是我正在做的事情：

// will this suffice against sql injection?
$filter_type = isset( $_POST['type'] ) ? filter_input( INPUT_POST , 'type', FILTER_SANITIZE_NUMBER_INT , FILTER_REQUIRE_ARRAY ) : NULL;

$type_cond = '';
if ($filter_type != NULL) {
    foreach ($filter_type as $type=>$value) {
        if ($type === 0) {
            // need to add (int) before $value?
            $type_cond = "AND t2.type = " . $value;
        } else {
            $type_cond .= $type_cond . " OR t2.type = " . $value;
        }
    }
}

使用一个数组索引输出：

AND t2.type = 1

使用两个数组索引输出：

AND t2.type = 1AND t2.type = 1 OR t2.type = 2

使用三个数组索引输出：

AND t2.type = 1AND t2.type = 1 OR t2.type = 2AND t2.type = 1AND t2.type = 1 OR t2.type = 2 OR t2.type = 3

为什么要连续重复？

Answer 1

因为：

<key>NSAppTransportSecurity</key>
<dict>
   <key>NSExceptionDomains</key>
   <dict>
      <key>yourserver.com</key>
      <dict>
         <!--Include to allow subdomains-->
         <key>NSIncludesSubdomains</key>
         <true/>
         <!--Include to allow HTTP requests-->
         <key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key>
         <true/>
         <!--Include to specify minimum TLS version-->
         <key>NSTemporaryExceptionMinimumTLSVersion</key>
         <string>TLSv1.1</string>
      </dict>
   </dict>
</dict>

会将let url = "http://yourserver.com/source.mp3" let playerItem = AVPlayerItem(URL:NSURL(string:url)!) audio = AVPlayer(playerItem:playerItem) audio.rate = 1.0; audio.play()添加到$a .= $b;的当前内容中。因此，如果你这样写：

$b

会将$a的内容添加到$a .= $a . $b（因此重复），然后添加$a的内容。

所以你需要替换它：

$a

用这个：

$b

foreach连续复制第一个var

1 个答案: