htmlspecialchars

很多人都以为htmlentities跟htmlspecialchars的功能是一样的，都是格式化html代码的，我以前也曾这么认为，但是今天我发现并不是这样的。 The translations performed are: 代码如下： '&' (ampersand) becomes '&' '"' (double quote) becomes '"' when ENT_NOQUOTES is not set. ''' (single quote) becomes ''' only when ENT_QUOTES is set. '<' (less than) becomes '<' '>' (greater than) becomes '>' htmlspecialchars 只转化上面这几个html代码，而 htmlentities 却会转化所有的html代码，连同里面的它无法识别的中文字符也给转化了。 我们可以拿一个简单的例子来做比较： 代码如下： $str='<a href="test.html">测试页面</a>'; echo htmlentities($str); // <a href="test.html">²âÊÔÒ³Ãæ</a> $str='<a href="test.html">测试页面</a>'; echo htmlspecialchars($str); //

Basically on displaying data from MySQL database I have a htmlspecialchars() function below that should convert single and double quotes to their safe entity(s). The problem I'm having is on viewing source code, it is only converting < > & when I also need it to convert single and double quotes. //sanitize data from db before displaying on webpage function htmlsan($htmlsanitize){ return $htmlsanitize = htmlspecialchars($htmlsanitize, ENT_QUOTES, 'UTF-8'); } Then when I want to use for example I do: htmlsan($row['comment']); Can someone tell me why it's not converting single and double quotes?

htmlspecialchars() 函数把一些预定义的字符转换为 HTML 实体。 预定义的字符是： & （和号） 成为 & " （双引号） 成为 " ' （单引号） 成为 ' < （小于） 成为 < > （大于） 成为 > addslashes() 函数在指定的预定义字符前添加反斜杠。 这些预定义字符是： 单引号 (') 双引号 (") 反斜杠 (\) NULL <?php $str = "Who's John Adams?"; echo $str . " This is not safe in a database query.<br />"; echo[object Object]de> . " This is safe in a database query."; ?> Who's John Adams? This is not safe in a database query. Who\'s John Adams? This is safe in a database query. strip_tags() 函数剥去 HTML、XML 以及 PHP 的标签。 即不带任何的标记，转换成字符串。 <?php echo strip_tags("Hello <b><i>world!</i></b>",[object Object]de>); ?> strip_tags

I pass my template an array of strings which I would like to convert to a jaavascript array: Controller file (php): $myVar = array('a','b','c'); Desired html: var myVar = ["a","b","c"]; I try the following code (twig): var myVar = ["{{ myVar | join('","') }}"]; But the twig generator converts the quotation marks to html entities and this is the result: var myVar = ["a&quot;,&quot;b&quot;,&quot;c"]; Some idea? You need to apply the raw filter: var myVar = ["{{ myVar | join('","') | raw }}"]; 来源： https://stackoverflow.com/questions/11557010/twig-use-quotation-mark-as-separator-for-join-filter

I send this with AJAX POST: <li><ul class "zone zCentral ui-sortable"><li><ul class="region rCol3 ui-sortable"><li class="" style=""><div><span class="tc tc_video">574081</span> <span>video: 'Mundo.Hoy': ¿Dónde habré olvidado... mi memoria?</span></div></li></ul></li></ul></li> I do this to create XML: header('Content-type: text/html; charset=utf-8'); if(isset($_POST) && isset($_POST['data'])) { $data = '<ul id="zone_container" class="ui-sortable">'; $data .= $_POST['data']; $data .= '</ul>'; $dom = new DOMDocument('1.0', 'utf-8'); $dom->loadXML($data); echo $dom->saveXML(); exit(); } and i

I am a little confused on this. I have been reading about htmlspecialchars() and I am planning to use this for the textareas POST to prevent XSS attack. I understand that usually htmlspecialchars() are used to generate the HTML output that is sent to the browser. But what I am not sure is: 1) Is it a safe practice to use htmlspecialchars() to the user input data before I insert it into MySQL? I am already using PDO prepared statement with parameterized values to prevent SQL Injection. 2) Or, I really dont need to worry about using htmlspecialchars() to inserted values (provided they are

I am using htmlspecialchars() function to prevent XSS attacks. I have doubt regarding what is the better method to store the data in database from following. Method 1 : Store the user input values after applying htmlspecialchars() function. Using this it user input "<script>" will become "<script>" . Method 2 : Store the user input as it is and apply htmlspecialchars() method while retrieving the data and displaying it on the page. The reason for my doubt is that I believe using method 1 there will be overhead on database, while using method 2 data need to be converted again and again when